Tuesday, July 23, 2019

Magloop antenna & my new coupling system (4K video). Post 1937.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=HAsG8q_oWT8.

I've been following the progress of Paul's (OM0ET) homemade Magloop Antenna over the course of several videos documenting the design, construction, and testing of this compact antenna.

In this segment, Paul makes what he calls a "practical improvement" of his homemade magloop with the addition of a new coupler unit which doesn't require the use of screwdriver--an ingenious design feature which works very well.  Paul has given us a remarkably well-made and clean design which should encourage experimentation within the amateur/ham radio community.

If you want more information on Paul's project, please visit this website:

http://www.sk-tech.sk.om0et.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Monday, July 22, 2019

HOW TO BUILD A BALUN 4 TO 1 TUTORIAL. Post 1936.


. If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=Tl_8msSbpDQ.

Other than the mildly distracting audio track, this video from 4Z5JO does an excellent job of showing how to build a simple, inexpensive, and effective 4:1 balun for your HF antenna system. 

The video provides a step-by-step method of designing and building this useful antenna accessory.  4Z5JO provides a full list of materials needed for this easy project.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, July 21, 2019

Ferrite rod antenna 160 meter. CQ de RN3RBH. Post 1935.


If you can't see the video, please insert this title URL into your search box: https://www.youtube.com/watch?v=gWfe3powlvY.

An utterly fascinating and somewhat cryptic demonstration of a 160 meter ferrite rod antenna from Russian ham Yuri (RN3RBH).

It isn't clear whether this antenna is transmit capable.  Most likely, this homebrew 160 meter antenna is designed for reception purposes only.  It probably nulls out noise very well.  If you live in an RFI-rich environment, then you may want to consider building something similar to Yuri's ferrite rod antenna.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).


Saturday, July 20, 2019

"Short" 160-Meter Vertical. Post 1934.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=ek14ax7pCfo.

Getting on the 160-Meter Amateur Radio Band from a small urban lot can be a difficult challenge.

You may find this curious top-loaded vertical from Stan Gibilisco (W1GV) a possible answer to your 160-Meter operating issues.  In Stan's design, a capacitance hat forms part of four guy wires supporting the vertical section of this antenna.  Try out this antenna and see if it works.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Friday, July 19, 2019

Long Wire Antenna. Post 1933.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=3lO_h1bqmmY.

Here's another fascinating antenna video from Denis (VE3BF).

In this video, Denis shows us how to make an efficient, inexpensive, and simple HF long wire antenna for both home and portable use.

The key to Denis's long wire antenna is a 9:1 UnUn which solves much of the antenna-feed line mismatch found in such antennas.  A good antenna transmatch (i.e. "tuner") and a simple ground radial or counterpoise system will improve the performance of this antenna.

Denis does a good job of explaining the concept, construction techniques, and tuning of this antenna.

If you want more information on HF long wire antennas, check out this website:
http://udel.edu/~mm/ham/randomWire.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
http://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).


Thursday, July 18, 2019

Inverted U antenna 160m band by YC2YIZ. Post 1932.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=Cl9H3CC0PAE.

If you want a good performing 160 meter antenna for a limited urban lot, please try this Inverted U antenna from Edy Karsano (YC2YIZ).

The horizontal wire is 17 meters/55.76 feet long, while the two side elements are 9 meters/29.52 feet each.

Edy says the antenna works well in a restricted space.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Wednesday, July 17, 2019

How to build an Inverted L for low-bands. Ham Radio Antennas made easy. Post 1931.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=kCq_fOwCLT4.

Now that HF propagation is favoring the lower amateur/ham radio bands (160m, 80m, and 40m), you may want to design, build, and test an inverted L antenna.

In this video, Callum (M0MCX) shows us how to build a simple antenna for the lower HF bands--in this case an inverted L for 80 meters.  The antenna has a small footprint, is easy to build and tune, and remains fairly inexpensive. 

As Callum points out, the basic 80 meter inverted L provides decent DX and local coverage, too.   Used with an antenna transmatch (i.e. "tuner"), this antenna can also be used on 40 meters through 10 meters. 

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Tuesday, July 16, 2019

Antenna Types and Terminology: AD#30. Post 1930.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=U0WB-3UToLg.

Here's another segment of David Casler's (KE0OG) popular "Ask Dave" series about Amateur/Ham Radio.

In this well-organized and energetic video, Dave presents an overall view of antenna theory, antenna terminology, and antenna designs for both the newly-licensed radio amateur and the experienced operator.

The video is full of valuable suggestions, interactive diagrams, and detailed discussion of antennas from verticals to gain antenna systems.  Dave's video would make a good program for your next club meeting or for an upcoming licensing class. 

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Monday, July 15, 2019

Man Portable Ham Radio Station/Field Day 2019. Post 1929.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=CP3kDxtaSWQ.

Although many radio amateurs/hams joined their clubs at public parks, emergency response headquarters, and civic building for the annual June ARRL Field Day, more survivalist-oriented operators, such as Finnish ham Julian (OH8STN), preferred to operate in remote field locations with light weight, portable equipment.

In this video, Julian show what he used to truly operate off-grid and away from
civilization.  From his electric bike to a state-of-the-art tent, Julian rolled out quite a station that collected many contacts.

Julian's basic equipment included:

A Yaesu FT-891 transceiver
A Raspberry Pi microprocessor for digital contacts.
A study, light weight MP-1 portable HF antenna.
Solar power.
Solar panels.
Basic tools.
And, of course, a beautiful shoreline to set up his equipment.

Julian has compiled a fascinating series of videos addressing survival and field radio operations.  I invite you to check out the videos by OH8STN. They are fun to watch and packed with valuable information.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, July 14, 2019

Tuning the 40/80 Meter Inverted V Dipole Antenna. Post 1928.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=IKuLDnwuy8M.

A 40/80 meter coil-loaded inverted V dipole antenna is an excellent fit for a small urban lot or any other restricted outdoor space.  However, tuning this antenna for efficient operation in both bands can be a bit challenging, especially where loading coils are used.

In this well-made video from Dave Tadlock (KG0ZZ), we learn a few ways to make the tuning procedure a bit less painful, while making sure each of our two bands is operating at peak efficiency.  Dave does a thorough job of explaining what to to without wasting time or materials. 

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, July 13, 2019

Doublet for a Small Garden - Multiband Antenna for HF


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=GPT_YLXclDE.

A fascinating video from Tim (2E0TWG) on how to squeeze a good performing multiband doublet antenna into a restricted garden space. 

In Tim's video, we see how careful planning can set up an efficient dipole antenna in a space measuring 30 ft X 30 ft (9.146 m X 9.146 m). 

Tim's antenna is only 44 ft (13.41 m) long, yet it performs well on several amateur radio HF bands.  Perhaps Tim's project can be used in your yard.  It's worth a try.  Remember the old saying:  "A compromise antenna is better than no antenna at all."

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Friday, July 12, 2019

Phased Vertical Array on 20M. Post 1926.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=G5awjoMRzrQ.

If you want a little more "punch" from your 20 meter vertical antenna, why not build Bob's (VK5FO) end-fire phased array of 2 X 1/4 wave length elevated ground plane antennas?

Bob walks us through the general theory, construction, and alignment of this directional antenna which can give about 3 dBi gain over a single 20 meter monopole vertical antenna.

Most of the materials for this phased vertical array can be obtained from your local building supply outlet, neighborhood hardware store, or through a few online vendors. A basic, simple, and fairly inexpensive way to get some gain from a vertical antenna.

For the latest Amateur/Ham Radio news and information, please visit these websites:

https://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Thursday, July 11, 2019

Choke 'balun'. Post 1925.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=kZhCs3FbvNU.

Here's a simple and elegant solution to keeping common mode currents off your coaxial cable feed line.

According to Australian radio amateur Peter Parker (VK3YE), this basic choke "balun" only uses a few materials:

7 meters/22.96 feet of RG-58 coaxial cable.
75mm/2.95 inches diameter piece of PVC tubing.
A few connectors.

Be sure to weatherproof the assembly.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Wednesday, July 10, 2019

2m Ladder Line J Pole. Post 1924.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=n0eYB5AWGvY.

Although some of my amateur radio friends will call KD0RVY's "2m Ladder Line J Pole" a "Slim Jim", the basic idea given in this well-done video is sound, doable, and extremely useful for portable, emergency, and field operations.

KD0RVY takes you step-by-step through the design, construction, and testing phases of this handy, lightweight, and inexpensive antenna.

According to KD0RVY, here's a list of the materials needed for this antenna:
60 to 61 inches/152.40 to 154.94 cm of 450 ohm ladder line.
A MFJ Ladder Line board with BNC connector.
RG-58 or RG-8X coaxial cable.
RG-58 or RG-8X coaxial cable with BNC connectors at both ends.
BNC Female to SMA Connector.
A 2 meter HT.

KD0RVY says the SWR for this 2 meter antenna is excellent:  144.000 MHz (1.2:1) and 148.000 MHz (2.0:1).

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Tuesday, July 9, 2019

Low budget easy to build 20 meter Antenna. Post 1923.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=VfhrMqZAlmg.

If you want an inexpensive, easy-to-build 20 meter vertical antenna for portable or emergency use, then this homebrew vertical designed by Denis (VE3BF) may be what you need.

Denis takes you step-by-step through the design, building, and testing phase of this remarkably simple antenna.  Denis also supplies a list of materials which can be used to make this "field operations" antenna.

Here's what you'll need to make this antenna:

An 8-foot/2.43 meters fence rail.
A TV roof top tripod.
A 1/2 in/1.27 cm to 3/4 in/1.905 cm diameter galvanized conduit pipe.
A 6 in X 9 in/15.24 cm X 22.86 cm cedar board.
4 pipe saddle clamps.
2 hose clamps.
One 108 in/274.32 cm stainless steel whip.
LDG RU-4:1 balun.
75 feet/2.86 meters of #14 AWG wire.

Have fun with this simple, sturdy 20 meter vertical antenna.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Monday, July 8, 2019

Feed-point Connector for Inverted V Dipole Antenna. Post 1922.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=4uPk0lAEwhc.

Here's another great project from Dave Turlock (KG0ZZ).  In this video, Dave takes us step-by-step through the design, construction, and testing of homebrew "Feed-point Connector for an Inverted V Dipole Antenna."

The video is very detailed, yet easy to understand.  If you follow Dave's instructions, you should get a very strong support for your inverted v elements. You may want to weatherproof the assembly to insure protection from the elements.

Most of the materials for this project should be available from a plumbing supply outlet, your neighborhood hardware store, or a building supply warehouse.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, July 7, 2019

Ladder Line and SWR. Post 1921.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=1KUJPcRIUDE.

In our previous post, Stan Gibilisco (W1GV) explained the pros and cons of a coax-fed multiband HF dipole antenna.  Even with an antenna transmatch (i.e. "tuner") in line, high antenna SWR for all bands, except the one cut specifically for the design frequency, will lead to poor efficiency and power loss.

According to Stan, one way to keep feed line losses to a minimum would be to use a balanced feeder (ladder line, TV window line, or homebrew 600 ohm balanced line) with your HF dipole antenna.  Design your dipole for the lowest frequency of use, use balanced line to feed the antenna, and use a balanced antenna "tuner" to keep line losses and SWR low.

In this video, Stan explains the theory, operation, and use of ladder line, as well as where and when to use it.  If you can have only one HF antenna, feed it with balanced transmission line connected to a balanced "tuner" and get multiband HF performance.  If you don't have a balanced tuner, run the ladder line into a 4:1 or 9:1 current balun, and attach this combination to your regular antenna tuner.

My main HF antenna (80 meter inverted V) follows the example outlined by Stan in this video.  I have full HF coverage on 80/40/20/15/and 10 meters.  The feed line is connected to a 4:1 W9INN current balun, which in turn is attached to my old Drake MN-4 Antenna Tuner with a short length of RG-8X coax.  My old Swan 100MX is happy with the arrangement.

Stan's basic design is simple, inexpensive, and nearly foolproof.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.net.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, July 6, 2019

Coax-Fed Multiband Dipole. Post 1920.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=d4Hr4vSnkuo.

In this video from Stan Gibilisco (W1GV), we see an "elegant but fragile solution to a common conumdrum"--making a monoband dipole antenna capable of operating on several amateur/ham radio bands with only one coaxial cable feed line.

With the aid of an antenna transmatch (i.e. "tuner") and a carefully chosen length of 50 ohm coaxial cable as a feed line, it's possible to cover a few HF bands without too much loss.  Many of us, myself included, used this arrangement when we needed a simple, inexpensive antenna to get on the air.  This arrangement worked fairly well, if one chose 40 meters as the basic antenna.  Even without a "tuner", a 40 meter dipole could give passable performance on 15 meters using the third harmonic of of 7 MHz.

As Stan points out, the antenna works fairly well, considering the mismatch found on the remaining amateur/ham radio HF bands.  Stan does a good job of exploring the pros and cons of this basic dipole antenna. In a later post, Stan will show us how to get better performance and antenna matching using a balanced feed line.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Friday, July 5, 2019

Ham Radio Basics--Dipole Antenna Center Insulator. Post 1919.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=E5OqrvyjTgs.

One of the ways you can achieve multiband HF coverage using only one coaxial cable feed line is to build a "Fan Dipole", with separate dipoles for as many HF bands you want to use.  The key to this "classic" antenna is the construction of a sturdy, weather resistant center Insulator to support your various dipole antennas.

In this video from Jim (W6LG), we see how some PVC plumbing parts, a coax connector, and a few screw eyes can make a tough, inexpensive center connector for your Fan Dipole.

Jim takes us step-by-step through the design, construction, and testing phases of this helpful antenna accessory.  A well-done, easily understandable tutorial from a well-know antenna pro.  Please note the classic Drake Amateur Radio gear in the background.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.infor.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Thursday, July 4, 2019

Inverted-V portable antenna for 20m - Neven, 9A5YY. Post 1918.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=azmDNE1uboo .

A very short video from Neven (9A5YY) showing us his simple, portable inverted V antenna.  He seems to get a variety of good contacts using only 5 watts into his Yaesu-FT-817ND transceiver.

The antenna has only a few parts:

Spiderbeam HD 12 m/39.36 ft telescoping fiberglass mast.
MFJ-1779C Center insulator.
Antenna wire.
Plastic insulators.
Various clips and clamps.
Ancell 5(50 ohm) coaxial cable for the feed line.
MFJ-269 Antenna Analyzer.

Neven says the antenna is resonant at 14.180 MHz with an SWR of 1.2.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).


Wednesday, July 3, 2019

Ham Radio - A look at the EMTECH ZM 2 antenna tuner. Post 1917.


. If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=eOEvhhLlL7U.

If you need a simple, effective antenna transmatch (i.e. "tuner") for your QRP station, then please consider the EMTECH ZM 2 antenna tuner.

In this video, Kevin Loughin (KB9RLW) does an exhaustive review of this small, but highly versatile ATU.  Kevin also compares the ZM 2 to his recently built L-network tuner.  While both tuners are capable performers, the ZM 2 holds the edge on overall performance.

The EMTECH ZM 2 is light weight, highly portable, and certainly efficient, whether you prefer home operation or working stations from a nearby park or recreation area.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Tuesday, July 2, 2019

How To Setup And Trim A Speaker Wire Dipole Antenna. Post 1916.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=jK5j8hTVnoE.

Now that you've measured your wire, gathered a few supports, and assembled some basic tools, how do you make sure your new dipole is close to the frequency calculated by the usual formulas and collective wisdom of your friends?

In this well-organized video by Josh of the "Ham Radio Crash Course", we learn how to build, setup, and trim your new HF dipole antenna so that it performs as you intended. The video provides basic, easy-to-understand instructions on how to make your dipole behave as it should.  A nice review for any antenna enthusiast.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Monday, July 1, 2019

A Simple Short Vertical HF Antenna. Post 1915.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=8_Axs2ut7sE.

Here's an excellent example of what can be done with a very short HF vertical in a portable or field operation.

In this video, "RadioPrepper" uses a 6 m/19.68 ft telescoping fiberglass fishing pole to support 19 ft/5.79 m of antenna wire.  The key to the success this antenna is the EARCHI 9:1 UNUN.  On this day, an Elecraft KX2 was able to reach Sweden for a QSO.  Notice how a complete ham station was carried in a small plastic case, making this arrangement perfect for an impromptu field operation.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www/arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, June 30, 2019

Compact Homebrew End Fed QRP Antenna. Post 1914.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=6hq7HAOYjZA.

Here's a simple, compact low wattage QRP HF antenna that is largely contained in a "Rubbermaid" plastic enclosure.  WI9LL built this portable end fed antenna using a 9:1 unun wrapped on a T 106-2 toroid.

This antenna has minimal parts and is lightweight--a perfect combination for portable or field use.  Make one of these inexpensive antennas for your "go-kit" or for use in emergencies.  Nicely done video.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, June 29, 2019

Ham Radio Antennas - Rebuilding the L network QRP antenna tuner


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=9-fuQz0-xbc.

Here's another great ham radio accessory for your shack or for portable operations.

In this video, Kevin Loughin (KB9RLW) revamps his original L-network antenna "tuner" and shows us how to fit it into a small box, making it easily portable.

Kevin's instructions are clear and easy to follow.  This simple, yet elegant antenna transmatch (i.e. "tuner") is perfect for random wire antennas or for end fed half wavelength antennas.  Make one of these "tuners" for your emergency "go-kit" or for that impromptu mini-expedition to the beach or nearby park.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Friday, June 28, 2019

ver.2.0 UltraLight Magnetic Loop - great QRP Antenna. Post 1912.


If you can't see the video, please enter this title URL into your browser search box: https://www.youtube.com/watch?v=FGWFA12rQ5M .

If you have limited space for a HF antenna or live in a deed-restricted property governed by CC&Rs and HOAs, then this "Ultralight Magnetic Loop" Antenna from Paul (OM0ET), may get you on the air without much difficulty.

Paul covers the basic theory, design, construction, and use of this small antenna which is suitable for both home and portable use.  When your antenna options are few, build a magnetic loop antenna and see what can be done in a small space.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://hamradiohawaii.wordpress.com.
https://oahuarrlnews.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Thursday, June 27, 2019

40m QRP with an end fed wire antenna along the ground. Post 1911.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?reload=9&v=LmJk3hFE8G0.

Australian radio amateur Peter Parker (VK3YE) has come up with another interesting approach to portable antennas. 

The basic idea is simple:  If you don't have any antenna supports, why not lay your antenna along the ground and see what happens?

In this instance, Peter stretches out approximately 20 meters/65.6 feet of antenna wire on the surface of a public park and proceeds to contact VK2MG, about 700 km/432 miles away, with a weak but usable signal.  Peter uses his Yaesu FT-817 for the 40 meter QRP contact.

This antenna is based on a concept published by Mike Toia (K3MT) several years ago.  Mike called this project the "Grasswire Antenna."  You can find plans for this antenna on the right hand sidebar of this post.  Just look under "Grasswire Antenna."

You won't get a strong signal, but you will be able to get on the air.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Wednesday, June 26, 2019

Burying radials. Post 1910.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=za3xQs6wAR0.

With the possible exception of vertical dipoles, most  1/4 wave length vertical antennas need a good ground radial or counterpoise system to function at peak efficiency.  The radial system supplies the "missing half" of the vertical antenna.

In this well-made tutorial from Dominic Smith (M0BLF), we see a properly installed ground radial system used with a Hustler 6-BTV multiband HF antenna.

Although there is no "hard and fast rule" governing the number of radials for a 1/4 wavelength vertical antenna, 16 to 34 radials seems to be a good compromise.  Of course, property limitations will determine how many radials you lay down.  Put down as many radial wires as you can. 

If this plan seems too tedious or time-consuming, try 4 to 6 elevated radials.  This system appears to work well for some radio amateurs.

Dominic does a good job of showing the basic installation process.  He enjoys many contacts with his new radial system.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Tuesday, June 25, 2019

Near Vertical incidence Skywave Propagation NVIS Antennas - Ham Radio Q&A. Post 1909.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=fvZ7z-6wAy0.

If you need a simple, efficient HF antenna for local, regional, and state coverage, why not build a NVIS (near vertical incidence skywave) antenna?  These antennas are designed to put out a strong signal covering 100 to 300 miles/162 to 486 kilometers from your station.  Such antennas can serve as valuable backups to regular VHF/UHF coverage, especially when repeaters are down.

In this video, Michael Martens (KB9VBR) show us how to build a simple NVIS antenna.  These antennas are perfect for local nets and regional coverage.  Although there is no "fast and sure" rule for how much the antenna should be above ground, I've found a 40 meter dipole about 15-feet/4.57 meters above ground and an 80 meter dipole about 31-feet/9.45 meters above ground will generate a good signal for about 300 miles/162 kilometers on most days. 

Michael does a good job of taking us through the building, tuning, and on-air operations of this useful antenna.  Why not make one of these antennas for your "go-kit" or for your next portable operation?

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Monday, June 24, 2019

Ham Radio - Building a 4:1 balun


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=l5rLI8FpM9g.

If you use antennas with balanced feed lines, you'll find this quick and easy 4:1 balun designed by Kevin Loughin (KB9RLW) a good way to keep excessive SWR and RFI away from your HF transceiver.

Kevin does a good job of taking you from basic theory through final construction.  Most of the parts can be ordered online or found in your station "junk box."  This project would make an excellent presentation for your amateur radio club or for an amateur radio license class.

Although 4:1 baluns can be bought from a variety of suppliers, why not make one for yourself?  The process will be educational and fun.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, June 23, 2019

The random length end fed HF antenna and you. Post 1907.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=a0hCtmbD5as.

Here's a simple random length end fed HF antenna (with antenna "tuner") that will provide multiband coverage at little expense. With the exception of the transformer and some heavy gauge wire, you can find most of the antenna materials from the nearest neighborhood hardware store or building supply outlet.

Bret of "Survival Comms" takes you step-by-step through the design, construction, tuning, and use of this versatile HF antenna.  Properly designed, an end fed random length antenna can solve most of your HF needs.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, June 22, 2019

40 Meter Inverted V Antenna - Build, Tune & Test! Post 1906.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=tbq1UgwM_go.

A nicely done video tutorial from Barbara Justice and her children on how to build, tune, and test a multiband inverted Vee Antenna.  According to Ms. Justice, this inverted Vee dipole is built like a fan dipole and is capable of working the 40, 20. 15, 10, and 6 meter amateur radio bands.

The instructions are clear and the assembly is fairly easy.  It was good to see her children involved in making this simple, effective antenna.  Perhaps, the "younger set" will pursue their own amateur/ham radio licenses in the future.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Friday, June 21, 2019

2 Meter VHF Halo Antenna Assembly And Testing. Post 1905.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=BJ07Y-ScFoM.

Here's a simple, efficient, and compact 2 Meter Antenna that would be perfect for home station use and any portable operation, such as the ARRL Field Day, SOTA, or IOTA expeditions.

Matt from Tech Minds does an excellent job of showing how to assemble and test this great kit from moonraker.eu.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).


Thursday, June 20, 2019

Field Day Antenna Launching Demonstration. Post 1904.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=aCyyH0a_Cpk.

One of the major issues facing ARRL Field Day participants is how to launch your dipole, random length, and end-fed antennas into nearby trees.

In this video from the Maple-Newton Amateur Radio Club in Delaware County, Pennsylvania, we see how a homebrew compressed air cannon put this antenna farm into some tall trees.  You can find plans for such devices on the internet.

While this air cannon certainly works, it requires a certain technical expertise to build one without endangering yourself and others.

When I face the antenna launching problem, I take a simpler and perhaps safer route:  I use my trusty Walmart slingshot, some fishing line, a few sinkers, a long length of rope, and a sturdy antenna to put my dipoles and end-fed wires into nearby trees.  Whatever launch method you use, please consider safety first before you launch your antenna.

For the latest Amateur/Ham Radio news and information, please visit these sites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Wednesday, June 19, 2019

#285: Amateur Radio Field Day 2018 - my 5 watt setup with on-air contact...


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=f4xhfwTtiEU.  Post 1903.

If you can't join your amateur radio club for the ARRL Field Day, why not go solo at the nearest public park or even in your own back yard?  You can enter as either class 1-D (commercial power) or class 1-E (emergency power).

In this well-made video from New Jersey radio amateur W2AEW, we see a simple QRP station at work during the 2018 ARRL Field Day held at one of the original Marconi transmitting sites.

The set up is simple, portable, and efficient:  an ICOM-703+ QRP transceiver and a triband end-fed wire.

If you're really ambitious, why not make a tape measure yagi and work some Amateur Radio satellites on 2 m and 70 cm?  Field Day is for any licensed radio amateur, club member or not.  Have fun!

For the latest Amateur/Ham Radio news and information, please visit these sites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM)

Tuesday, June 18, 2019

End Fed Half Wave Antenna -11 Bands One Antenna! Post 1902.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=Ree8NtpEEW4.

Great video from Steve Ellington as he shows us how to get 11 amateur bands from one end fed half wave antenna. 

The key to this fascinating antenna is the 49:1 balun and the relay box.  If you bypass the relay box, you can add 160, 60, and 6 meters to the 130-ft/29.63 m antenna element.

Although the project is a bit complex, your effort will result in an effective antenna which covers the major amateur/ham radio bands from 160 through 6 meters.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Monday, June 17, 2019

Building a trap dipole for 7 and 14 MHz. Post 1901.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=LbEAwAG1KMA.

If you only want to operate on two or three bands and don't want to adjust an antenna transmatch (i.e. "tuner"), then this trapped dipole for 7 and 14 MHz may be for you. 

Peter Parker (VK3YE) does an excellent job of taking us through the theory, design, construction, tuning, and use of this simple, effective antenna.

Peter puts particular emphasis on getting a SWR closest to 1:1 and on designing an effective 14 MHz trap.  This project would be excellent for any "field operation", such as the ARRL Field Day, SOTA, or IOTA DX-peditions.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, June 16, 2019

6 Meter Antenna Build. Post 1900.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=wrYhaaSw-pg.

If you need a simple, easily-made, 6 meter antenna for the ARRL Field Day, an upcoming ham adventure to a nearby park, or for home use, then this 6 meter 1/4 wave ground plane antenna from Paul Colton may your antenna of choice.

Paul does a nice overview of his homebrew 6 meter antenna, including a list of materials, construction tips, and helpful suggestion on tuning and using this basic antenna.

With the exception of the coaxial cable feed line, most of the antenna materials can be found at the nearest hardware store or home improvement outlet.  Good luck on this project.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, June 15, 2019

My 6 Meter Moxon Antenna. Post 1899.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=PvVq7r_7ILE.

Thanks to John Ryan for this simple, easily-made Moxon Antenna for the 6 meter amateur radio band.  Most of the materials can be found at the nearest hardware store or building supply outlet.

The antenna is made from PVC pipe, stiff wire, and 50 ohm coaxial cable. The choke balun is also made from coaxial cable. The antenna is portable, making it perfect for the ARRL Field Day or an impromptu outing at the nearest park or beach.  Why not make one of these antennas for home or emergency use?

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.Hawaii ARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).


Friday, June 14, 2019

ARRL Field Day Safety - Ham Radio Q&A. Post 1898.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=vXIUqr3tMpU.

With the ARRL Field Day set for the fourth weekend in June, it may be prudent to not only consider the personnel, supplies, antennas, and equipment needed to run this 24 hour emergency communications exercise, but also the measures taken to insure the safety of all participants, observers, and invited guests.

In this well-produced video, Michael Martens (KB9VBR) discusses the steps needed to have a successful Field Day operation without worrying about accidents.

Michael covers a variety of issues, including generators, antenna placement, site security, and the handling of equipment.  Also, you may want to consider factors of weather, sanitation, site placement, and medical treatment.  Michael does an excellent job of covering what you need to know about Field Day, from both the equipment and personnel side to questions about security and station efficiency.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://www.eham.net.
https://hamradiohawaii.wordpress.com.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Thursday, June 13, 2019

End Fed Half Wave Antenna Presentation. Post 1897.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=N_o0jneBEh0.

In this video from Steve Ellington, we get a thorough, in-depth introduction to the "classic" end fed half wave antenna.  Steve's video is based on a presentation he gave to the Lawrenceville, Georgia Techfest.

Steve covers the history, theory, construction, and use of this multiband HF antenna based on a 1909 design from Hans Biggerow.

I learned a lot from this video, especially the importance of grounding the transformers and transmitter to maximize current on the wire.  Perhaps you can make one of these antennas for the ARRL Field Day.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Wednesday, June 12, 2019

Build a 20 meter Dipole Antenna. Post 1896.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=9TyoTmpaHG4.

Here's a remarkably simple, inexpensive, and totally portable 20 meter antenna you can build for under $20.

Jerry Davis shows us how to design, build, trim, and use a basic dipole antenna for the 20 meter amateur radio band.  The steps outlined in this video can be used
for any amateur radio band from 160 through 10 meters.  This antenna doesn't require an antenna "tuner."


According to Jerry, he spent around $17.00 (USD) in making this dipole.  Perhaps, you can duplicate this antenna for less, depending on what you have in your "junk box." 

Pack one of these antennas in your "go-kit" for emergencies or coil one up for your next mini-DXpedition to a nearby park or beach.  Add a telescoping fiberglass mast, a few insulators, a portable transceiver, and some solar charged batteries, and you're ready to go.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Tuesday, June 11, 2019

Building an Emergency Ham Radio Go Box. Post 1895.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=_3qS6QYQWjQ.

Every radio amateur should have an emergency "go-kit" or "go-box" in case you have to operate in the field.

In this well-made, easily understandable video from "Bluegrassmedia", we see how a surplus army ammunition box, a spare VHF/UHF transceiver, a few batteries, and a little imagination can get you on the air in a matter of minutes.  Of course, don't forget spare batteries, an antenna, and an antenna "tuner" to round out your project.

The video does a good job of showing how to prepare and assemble the basic elements of the "go-kit."

Keep one of these kits in your vehicle or ham shack for the next emergency or portable operation.  Take one of these kits with you on your next ARRL Field Day exercise.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon by HQ ARRL in Newington, CT, 06111).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Monday, June 10, 2019

Magnetic Antenna on a bike -- will it work? Post 1894.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=kkk65a3GMf8.

K2EFG presents us with an intriguing idea:  Could you operate on the 20 meter band using a magnetic antenna mount on a bicycle?  The short answer is maybe, given there is little or no ground plane on a bike.  VHF/UHF operation is doable, as several older youtube videos have demonstrated.

But all is not lost.  You could operate from a stationary position by attaching a ground radial wire to the antenna mount. Or, one could devise a small trailer or hitch with the antenna mounted about a foot/0.304 meters above ground to provide some capacitive loading as you pedaled along.

With a little refinement, this bicycle HF mobile antenna has possibilities.  Antenna experimentation is one of the joys of amateur/ham radio. K2EFG has a great idea that could create some new mobile antenna alternatives at minimal expense.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, June 9, 2019

Cheap SOTA or Stealth 40m Antenna for 1,000m Footprint - Ham Radio Aerials. Post 1893.


If you cant's see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=0oS_DCwgWIs.

Do you need a simple, inexpensive antenna for SOTA operations, ARRL Field Day, or a quick mini-DX pedition to a nearby park?  Then this 40 meter antenna from Callum (M0MCX), may suit your needs.

The antenna also serves as a "stealth" antenna for those living in deed restricted properties such as HOAs and CC&Rs.  Although the antenna is only 5-feet/1.524meters above ground, it can provide effective communication up to 1000 miles/1,601 kilometers depending on propagation.

This basic antenna probably should be called a NVIS (Near Vertical Incidence Skywave) dipole--a design used by ARES, RACES, Amateur Radio Net Controls, and those primarily interested in local, state, or regional "rag chews."

Callum shows us how to make and use the amazingly effective antenna without drawing the attention on nosey neighbors.  Granted, this antenna won't provide a lot of DX, but it will get you on the air with plenty of local contacts.  The material requirements are basic, with most materials probably located in your shack or at the nearest building supply outlet.

You can add an antenna transmatch (i.e. "tuner") to get multiband performance depending on local conditions.  Later on, you can use this project to create an inverted vee dipole, which should improve performance.  You could also use the antenna to snag daytime Field Day contacts on 40 meters. 

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, June 8, 2019

DIY VHF 2M Jpole antenna out of 450ohm line. Post 1892.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=ShRwnnejoO8.

Here's a great 2 meter antenna suitable for portable (ala ARRL Field Day), emergency, and home use.  This easily-made vertically polarized antenna is made from 5 ft/1.524 m of 450 ohm ladder line and 10 ft/3.048 m of RG-58 coaxial cable with a bnc.  With the help of a a few simple tools, soldering equipment, and tape, you'll have this 1/2 wavelength vertically polarized end fed design with a 1/4 wavelength matching sub up and going in just a short time.

Bret of "Survival Comms" does an excellent job of taking us through the design, construction, and adjustment of this simple, effective antenna.  Make one for your emergency "go-kit" or for that impromptu mini-dxpedition to your local park.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.com.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Friday, June 7, 2019

2014 Field Day - Yo Yo Dipole with KF5JNU. Post 1891.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=Ri2UM0mTEKQ.

If you're thinking about using a different kind of antenna for the next ARRL Field Day or for a portable DX-Pedition of your own, you can't go wrong with this simple, easy to erect dipole from "HamRadioFun.com."

Gerald (KF5JNU) used one of these compact, inexpensive antennas during the 2014 ARRL Field Day.  He does a good job of explaining the theory, set up, and use of this portable antenna.  You can configure the antenna in many ways, ranging from a straight horizontal dipole to slopers and inverted vees.  Even if you don't use this antenna all the time, it will make a perfect companion for your ham radio "go-kit".

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Thursday, June 6, 2019

Four hours QRP portable in the 2019 John Moyle Field Day


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=_5PoVG9foH8.

Do you need a little inspiration to join the ARRL Field Day Event? Then this fascinating video from Peter Parker (VK3YE) should help you join the semi-contest and emergency communications exercise, even if you can't meet with your fellow radio amateurs at their Field Day site.

In a little over four hours, Peter made 50 contacts from a local park using only his Yaesu FT-817, a telescoping fiberglass rod (i.e. "squid pole"), an end fed 20 meter/65.6 ft wire, and a radial wire along the ground.  You don't need fancy equipment to join the festivities.  You might want to include a simple L-match antenna "tuner" to round out your portable station. 

Because of work requirements, I've often "camped out" in my backyard with a simple dipole antenna, antenna "tuner", a deep charge marine battery/solar panels, and my trusty Yaesu FT-7.

Peter has inspired me with many simple, effective antennas for portable operations.  Perhaps this video will encourage you to create your own mini-expedition and Field Day station.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).


Wednesday, June 5, 2019

How to Set up a Home-based Field Day Station. Post 1889.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=MeumSDLXBKM

If you can't go to your radio club's field day site, why not set up a "Field Day" mini-expedition in your backyard?  I've faced this issue several times in the past where work precluded any trip to my nearest Field Day site.

In this video, Tracy of "Outdoors on the Air" shows us a simple way to join the Field Day adventure right in the backyard of your own home or apartment.  Home-base stations compete in their own category (1-D for use of commercial power and 1-E for emergency power).  Armed with a simple dipole antenna, an antenna transmatch (i.e. "antenna tuner"), a spare HF transceiver, a laptop computer for logging purposes, and a deep-cycle marine battery with solar panels, you're ready to go.

Tracy does an excellent job of making the Field Day experience simple and fun.  Why not involve the neighborhood children in the event?  Make some cookies, lemonade, and a few sandwiches for the event.  Good luck to all of you operating 1-D, 1-E, or even 1-C (mobile).

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
http://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Tuesday, June 4, 2019

Ham Radio Satellite Home Brew Antenna. Post 1888,


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=whbccNdqAtA.

Here's another simple, quickly made satellite antenna suitable for use at the upcoming ARRL Field Day or at your home station.

In this video, the "Amateur Radio Guy" uses a surplus microphone stand, some stiff copper wire, and his UV5r 2 m/ 70 cm hand-held transceiver.  He calls this homebrew project "really cheap and really simple..."  Why not make one of these antennas for the ARRL Field Day?  This is an easy way to get points and experience the thrill of working Amateur/Ham Radio Satellites.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Monday, June 3, 2019

Portable Amateur Radio Satellite Antenna. Post 1887.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=b0niy7Sy96Q

An interesting way to collect some extra points and experience for the upcoming ARRL Field Day is to contact the wide variety of amateur/ham radio satellites available for this event.

If you don't have an antenna to do the job, then this simple, inexpensive portable amateur radio satellite antenna may be the answer.  The antenna covers both the 2 meter and 70 cm amateur radio bands, and can be used with your HT or dedicated VHF/UHF transceiver.

Dave Tadlock (KG0ZZ) takes you step-by-step through the design, construction, tuning, and on-air tests needed to make a fully functional satellite antenna.

An article by Sean Kutzko (KX9X) entitled "Get on the Satellites for ARRL Field Day" is available here: 

https://www.amsat.org/get-on-the-satellites-for-field-day.  Sean's article originally appeared in the June 2018 edition of "QST".
--------------------------
For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, June 2, 2019

AMSAT Field Day on the satellites-AMSAT. Post 1886.


AMSAT Field Day on the satellites-AMSAT
Source:  https://www.amsat.org/field-day/
Author:  Bruce Paige (KK5DO), AMSAT Director of Contests and Awards.
Accessed on 03 June 2019, 0050 UTC.

Summary:

The annual ARRL Field Day is set for 22-23 June 2019--an event that attracts up to 40,000 U.S. and Canadian radio amateurs at they "take to the field" to test their emergency communications skills.

Operating concurrently with the ARRL, The Radio Amateur Satellite Corporation (AMSAT) promotes its own version of Field Day concentrating on field operations using amateur/ham radio satellites.  The event is open to all Amateur Radio operators and follows the same rules applicable to the regular Field Day operation.  AMSAT encourages the use of all amateur satellites, both digital and analog.

Bruce Paige (KK5DO), the AMSAT Director of Contests and Awards has assembled a basic information package for radio amateurs desiring to use satellite contacts as part of their Field Day experience.  You can access the operating guidelines here:

https://www.amsat.org/field-day/.

In the coming days, I'll post a few satellite antenna ideas which can help you contact several amateur/ham radio satellites now in orbit and open for Field Day use.  Good luck and may you have a genuine "space" experience."

---------------------------

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, June 1, 2019

Say Goodbye to that G5RV! Look at the ZS6BKW. Post1885.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=MbXmAcf9MmI&app=desktop.

If you're a bit disappointed in the performance of your G5RV HF antenna, try this modification of Louis Varney's (G5RV--SK) classic antenna.

Marck (AE4J) and his friends have adopted a design by ZS6BKW which offers a few improvements over Varney's pioneering antenna.  The most conspicuous departures from the G5RV are the length of the antenna elements and the matching section.

According to Marck, the each horizontal element is 46 ft, 10 in / 14.274 m long, with the 450 ohm matching section (ladder line) measuring 39 ft, 1.5 in /11.926 m long. 

With the exception of the 450 ohm ladder line, most of the antenna materials can be found at your local hardware store or building supply outlet.  The only major drawback to this antenna is the use of two supporting structures such as trees or masts.  An inverted Vee configuration could be used if necessary.  Build the ZS6BKW and see what happens.  You may be pleasantly surprised by its performance.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM)

Friday, May 31, 2019

Doublet for a Small Garden - Multiband Antenna for HF. Post 1884.


If you can't see the video, please insert this title URL into your browser inbox: https://www.youtube.com/watch?v=GPT_YLXclDE

If you live on a small urban lot, a classic 1/2 wavelength horizontal dipole antenna may be nearly impossible, especially if you have only a 30 foot X 30 foot (9.14 m X 9.14 m) garden in which to "plant" your antenna.

In this video from Tim (2E0TWG), we see how a little ingenuity and creativity can produce a useful doublet antenna capable of serving several amateur radio HF bands.  Tim does an excellent job of describing his antenna, from basic design considerations and construction to actual testing and on-air use.  A thoroughly inspiring project!

For the latest Amater/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Thursday, May 30, 2019

6 Meter Squalo Antenna Build. Post 1883.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=U3ZGJWuzgRs.

Another 6 meter antenna you may find useful during the E-Skip openings this summer is the classic "squalo" antenna.  This antenna was once popular for mobile operations and for areas with limited antenna space.

Chris (K2CJB) does an excellent job of taking you through the design, construction, tuning, and use of this somewhat unusual antenna.  The antenna is sturdy, portable, and suitable for both home and field use.  Why not build one for the upcoming North American VHF Contest or the June ARRL Field Day emergency communications exercise?

You can find exact plans for the 6 meter squalo antenna here:
http://pa3hcm.nl/p=312.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Wednesday, May 29, 2019

Six meter ham radio dipole for the VHF contests. Post 1882.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=T6PY9TdQj98.

There's a good chance that the "Magic Band" (Six Meters) will be active during the 2nd weekend of June as VHF enthusiasts take to the air in the North American VHF Contest. 

To get you prepared for that event and the upcoming ARRL Field Day, you may want to consider building this simple 6 meter dipole antenna from readily available parts.  KA5D shows you his simple antenna that is suitable for both home and field use.  Each element is 132 cm/51.96 inches and is tuned for 50.125 MHz USB.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly blog that is updated each Friday afternoon).
https://bigislandarrlnews.com.
https://hamradiohawaii.wordpress.com.
https://oahuarrlnews.wordpress.com.
https://www.eham.net.
http://www.southgatearc.org

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Tuesday, May 28, 2019

A top band aerial for small gardens. Post 1881.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=_jg4Agf3AqQ.

Another outstanding video tutorial from Ray of "The Radio Workshop."  In this video, Ray show us how to build a 160 meter antenna that fits into a space occupied by a small garden.  Most radio amateurs living on a small urban lot can appreciate the time and effort that goes into building an effective 160 meter antenna for a limited space.

Although Ray admits his antenna isn't the most efficient, it will get you on "top band" with a reasonable signal.  As an added bonus, the antenna also covers all amateur/ham radio bands from 80 meters through 10 meters.  Don't deny yourself the pleasure of working on this fascinating slice of the radio spectrum.  Build this antenna over the weekend and see how well it works in your location.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Monday, May 27, 2019

An inexpensive 3-Band Magnetic Loop Antenna. Post 1880.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=B-tYtbTts0s.

If you ever wanted to make a multiband magnetic loop antenna, but were afraid to take on the complexity of such a project, then this interesting, innovative video from Dennis Blanchard (K1YPP) may change your mind. 

By using commonly available materials, Dennis show us a simple, practical method of designing, building, testing, and using a magnetic loop antenna for three amateur radio bands (40/30/20 meters). 

According to Dennis, the antenna costs approximately $20.00 USD and is capable of handling up to 100 watts (although he recommends keeping the power below 40 watts).  This antenna would make a great addition to a field day site or to a simple home-based amateur radio station.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, May 26, 2019

The 6 meter Delta Loop Tutorial. Post 1879.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=lZkWPP13S6k.

If you're looking for a simple, efficient, and low noise 6 meter antenna for your ARRL Field Day experience, then this beautifully designed project from Martin (M0ZMF) is what you need.

The video consists of five easily understood sections:

Materials
Construction of the Base Plate
Stub production
Final assembly
Final set up

Martin goes into considerable detail on how to design, build, test, and adjust this high-performance antenna.  Not only does this delta loop have exceptional structural design, but it also is fully portable and easy to set up and take down.

Give this antenna "a shake down cruise" during the ARRL Field Day in June...you won't be disappointed.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, May 25, 2019

How To Build A Dipole Antenna. Post 1878.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=QNgu9nd7fmA.

If you need a simple, inexpensive, and efficient HF antenna for the upcoming ARRL Field Day, why not build this "classic" half-wavelength horizontal dipole?

In this video, Kevin (N6VLF) reviews almost everything we know about designing, building, tuning, and using this basic antenna.  You can configure the dipole in any number of ways, including the inverted vee, the half-wave sloper, and even a vertical (if you have a very tall support). 

You can easily convert the dipole into a multiband HF antenna with the addition of a balanced feed line, a sturdy wide-range antenna "tuner", and an appropriate current balun. 

If you follow Kevin's suggestions, you'll have a fully functional, efficient antenna for Field Day in a matter of a few hours.

This video would make an excellent presentation for your club or for the next amateur radio licensing class.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Friday, May 24, 2019

20 Meter Delta Loop Antenna. Post 1877.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?reload=9&v=Rq-9TAcCnxE.

If you need an easy to build, inexpensive gain antenna for the 20 meter band, then this basic Delta Loop Antenna may be what you need.  Denis (VE3BF) has done an excellent job of presenting this antenna, which can be used at your home station as well as for the annual ARRL Field Day exercise.  If you use balanced feed line, a 4:1 current balun, and a sturdy antenna transmatch (i.e. "tuner"), this basic design can be used on any amateur radio band between 20 and 10 meters.

I've built several delta loop antennas in the past and find them quiet and fairly stealthy in crowded urban neighborhoods.

If you follow Denis's suggestions, you'll have an effective 20 meter antenna with little effort and financial expense.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Thursday, May 23, 2019

Field Day Antennas. Post 1876.


Field Day Antennas

Source:  https://www.dxzone.com/best-field-day-antenna/

Accessed on 23 May 2019, 2125 UTC, Post 1876.

Content provided by https://www.dxzone.com.

Please click link to read the full article.

Summary:

Approximately 40,000 U.S. and Canadian ham radio operators will join their colleagues worldwide during the 22nd and 23rd of June to participate in the annual ARRL Field Day event.  Field Day is part contest, part emergency communications exercise, and part fun.  Amateur Radio operators will take to the "field" and try to make as many contacts as they can during the short operating window of the event.  Among the stars of this radio happening will be the antennas which will send signals around the globe and through space to reach destinations far and wide.

The antennas used will run the gamut from random wires to sophisticated multi-element beams on portable towers.  What antenna will you or your club use during this year's Field Day?  In order to simplify your antenna choices, the folks at https://www.dxzone.com have compiled a list of 12 simple, inexpensive, and efficient antennas suitable for both home and portable operations.  Most of these antennas can be home built or constructed on site.  You may find the ideal Field Day Antenna in this article.

Here are the choices offered by the experts at the "dxzone.com":

The End Fed Half Wave Antenna for 40 meters through 6 meters from the Emergency Radio Club of Honolulu.

KN5L Field Day Vertical Antenna.

40 meter Full Wave Loop from N4KGL.

The 2-element wire Yagi for Field Day operation (the antenna covers 20-40 meters).

HF Wire Antennas from VE3NXB.

Smithe Windom Six Band HF Windom Antenna from K3MT.

JA7KPI Windom Antenna for 40 and 80 meters.

Windom Antenna for 20-15-10 meters from F5ZV.

Random Wire Antennas from the ARRL.

D3 Antenna for Field Day (a broadband wire antenna).

Compact Multi-Band Field Day Antenna from NC4FB.
--------------------------
Build one of these antennas and get ready for fun!

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).