Saturday, May 18, 2019

Deploying an Off Center Fed Dipole Antenna for Ham Radio. Post 1871.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=D4P5DdvsLys.

In this video, we follow W5KV as he designs, assembles, erects, and uses an Off Center Fed Dipole for Ham Radio.  He discusses the materials, equipment, feed lines, and other tools necessary to make this popular HF antenna work efficiently.

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 17, 2019

80m END FED NVIS FIELD ANTENNA. Post 1870.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=jiaHtmOB57Y.

Your ARRL Field Day Antenna doesn't have to be complex and labor intensive.  In this video from NG9D, we see how a simple 80 meter end-fed NVIS antenna can bring hours of operating fun and reliable state and regional contacts. 

NG9D covers the basic theory and installation of the end-fed NVIS antenna, as well as demonstrating how easy it is to make contacts using simple equipment.

If you want to gather some local or regional contacts for your Field Day log, then try this simple, easily erected antenna.  With the use of balanced feed line and a wide-range "tuner", this NVIS antenna can cover several HF bands, giving you both daytime and evening capability with just one 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).

Thursday, May 16, 2019

Random Wire antennas presentation. Post 1869.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=gUwBIG_8vTI.

Terry Snyder (WB3BKN) gave this excellent program at the 18 November 2018 meeting of the Harrisburg Radio Amateurs Club.  Terry covers a wide range of random wire issues, including lengths to avoid, grounding, radial systems, and feed line choices.  In addition to giving the lengths to avoid in random wire antennas, he provides a list of recommended wire lengths that should be easy to match with your antenna coupler (i.e. "tuner") and ground radial system.

Although Terry's presentation is well-done and easily understandable, I've found it simpler to follow two basic practices for random wire antennas.

If you're designing a wire antenna for a single band, make the wire 1/4 wavelength for your preferred frequency.  If you want 80 through 10 meter coverage, build an End Fed Half Wave (EFHW) antenna instead, using a 49:1 balun/antenna "tuner" combination coupled to a 1/2 wavelength antenna for your 80 meter frequency.  This antenna should cover amateur radio frequencies from 80 meters to 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).


Wednesday, May 15, 2019

Ham Radio - Building a 4:1 balun. Post 1868.


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're using a balanced feed line to energize your OCF (off-center fed) dipole, an EDZ (extended double zepp) antenna, or even a full-sized loop antenna, a 4:1 current balun is a necessary component to these popular HF antennas.  Used with an antenna transmatch (i.e. "tuner"), the easily-made 4:1 balun keeps excessive SWR in check, cuts back on RFI, and keeps common mode currents off your feed line.

In this video from Kevin Loughin (KB9RLW), we see how a couple of type 43 toroids, a common resistor, and some surplus wire pieces can be transformed into a useful, efficient 4:1 balun.  Kevin's explanations and demonstrations are clear, insightful, and easily understood. Make one of these baluns for your next HF 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).

Tuesday, May 14, 2019

Ham Radio - A 40 meter folded dipole using window line. Post 1867.


If you can't see this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=cS5nlutY_L4.

If you're looking for a HF antenna that shows some immunity to man-made noise, then the folded dipole may be worth trying. 

In this video, Kevin Loughin (KB9RLW) takes us step-by-step through the design, construction, and use of a 40 meter folded dipole antenna.  This antenna may prove beneficial in areas of high urban noise or other interference.

According to "Sparks" (W9DKB), "The folded dipole, being a loop, responds more to the magnetic (H) field of radio waves.  Most man-made noise is electrostatic (E) in nature and less (likely) to be picked up by magnetic antennas."

Your feedline can be TV ribbon line (300 ohms), ladder line (450 ohms), or even homebrew 600 ohm balanced line.  Be sure to use an antenna transmatch (i.e. "tuner") in conjunction with a 1:4 current balun to keep SWR and RFI to a minimum.

Kevin has done an excellent job of outlining the potential of an often ignored antenna design.

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 13, 2019

ARRL Field Day Safety - Ham Radio Q&A. Post 1866.


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

More than 40,000 radio amateurs from the United States and Canada are expected to "take to the field" during the last full weekend of June for the annual ARRL Field Day emergency communications exercise.  The event is part contest, part emergency communications, and part fun.

One of the most important aspects of this yearly event is operational safety, from generators and tents to antenna erection and food preparation.  In this video from Michael Martens of KB9VBR Antennas, we learn how to prepare for this outdoor event and take the necessary precautions to prevent accidents.  A little pre-planning will go a long way to keeping Field Day a safe and enjoyable 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://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 12, 2019

#207 build your own ham radio antenna for field day or traveling. Post 1865.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=wKuaTX442UQ.

In this video, "Peter" establishes a sound and thorough understanding of antenna design for any band and frequency.  Peter covers basic antenna theory, including formulas, construction practices, and materials considerations. 

If you're looking for antenna ideas for your home shack, the ARRL Field Day, or for any portable operation, please check out this video.  Although the video is a bit long, it covers almost everything you need to know about antennas.  Place a copy of this video in your shack for further reference.

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 11, 2019

HOA Stealth Backyard Vertical 10m-80m Antenna - MFJ-1979, RadioWavz P-80. Post 1864.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=4W5FFX3movg.

Operating an amateur radio station in a deed-restricted property governed by HOAs and CC&Rs presents a real challenge.  In this video from "remingtonh" we see how a simple monoband vertical antenna can gain multiband capability while remaining nearly invisible to nosey neighbors.

The antenna is a modified MFJ-1979 1/4 wave 20 meter vertical coupled to a RadioWavz Patriot 80 adjustable loading coil, supported by a Hustler mast, and tuned in part by a MFJ-959 capacitive matcher.  Remingtonh has installed a good ground radial system to improve the efficiency and performance of the vertical.

To make the antenna a bit more stealthy, I would recommend a coat of green or brown paint to help the vertical blend in with its surroundings.  A tilt over device could be used to lower the antenna when it's not being used.  A case of "out of sight, out of mind" for those overly curious about the structure in remingtonh's backyard.

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 10, 2019

Simple Ground-Plane Vertical. Post 1863.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=HJpQBy34ubg.

If you're looking for a simple, inexpensive, and effective HF antenna for your shack or for the upcoming ARRL Field Day, then this basic 40 meter ground-plane antenna from Stan Gibilisco (W1GV) maybe your answer.  In fact, this was the first antenna I used when I became a novice ham radio operator back in 1977.
In addition to the 40 meter band, I also was able to make contacts on the 15 meter band using the third fundamental of the 40 meter frequency.

The antenna is simplicity itself.  In this antenna, the 40 meter element and each of its ground radial wires are 33 feet/10.06 meters long.  I used a telescoping fiberglass mast to support the vertical element and some left over "zip cord" for the ground radial system.  I fed the antenna with 50 feet/15.24 meters of RG-8 coaxial cable.  Like Stan's design, my SWR was approximately 1.5:1.  During my year as a novice operator, I made many contacts throughout the mainland United States and Asia from my Hawaii Island QTH.

You can find most of the materials for this easy-to-make antenna at the nearest building supply outlet or neighborhood hardware store.

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 9, 2019

Zero-Five Vertical Antenna Setup at KC9FFV's QTH. Post 1862.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=jgTWyR7hyII.

Here's another fascinating vertical antenna installation.  This time, KC9FFV shows us how he installed and tested his Zero-Five 43 foot/13.109 metre antenna on his property.

An interesting note is his use of a chain link fence as part of his ground radial system.  I would have preferred a few more ground rods or some ground radial wires spreading out from the antenna base.  Apparently, KC9FFV gets good results from this installation, so the metal fence apparently helps to create a suitable ground or counterpoise system for this installation.  Other than this minor quibble, this installation is neat, well-planned, and effective.

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, May 8, 2019

DX Engineering 43 Foot 160 to 10 Meter Vertical Antenna Pt 3 of 3. Post 1861.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=2bOhB2My8qY.

In this video, "David S" finishes his 3-part series on how to build the DX Engineering 43 Foot/13.109 Meter 160 to 10 Meter Vertical Antenna.  In this section, David finishes the extensive ground radial system which will boost the performance of the antenna and provide a low take-off angle for DX contacts.

Tuning is accomplished by using the DX Engineering Multiband Vertical UNUN in combination with your in-shack wide range "tuner."  DX Engineering supplied the ground plate needed for the attachment of the ground radial system.  Although the radial system is laid on the ground, you may want to bury the radial wires a bit below the surface so that grass covers the radial field.  Once the grass grows a bit, you can trim the area with a lawn mower to keep the installation neat and clean.  You can make narrow slits for the radial wires with a lawn edger or a pizza cutter.

David S has done an excellent job of showing how to build an effective DX antenna.  Although the installation of the MBVE-1 Multiband HF Vertical Antenna is labor intensive, you will more than make up for the effort with some excellent DX contacts.

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).

DX Engineering 43 Foot 160 to 10 Meter Vertical Antenna Pt 2 of 3. Post 1860.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=91j5jsqyCBY&t=327s

In part 2 of his 3 part series on building the MBVE-1 DX Engineering Multiband Vertical Antenna, "David S" show us how to prepare the ground stake and ground radial plate for the antenna.  He also begins preliminary construction of the antenna, paying particular attention to the parts inventory and placement of all antenna pieces.

Tuning of the well-made antenna is accomplished by using the DX Engineering Multiband Vertical UNUN and your in-shack wid-range tuner.  The commentary is often humorous and inspirational.  All told, a well-produced tutorial for both newly licensed hams and experienced operators. In part 3, David puts all the pieces together, conducts a few basic tests, prepares for on-air tests.

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, May 7, 2019

DX Engineering 43 Foot 160 to 10 Meter Vertical Antenna Pt 1 of 3. Post 1859.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=q6dEHL5Mw0Q.

Although I've never owned a DX Engineering MBVE-1 Multiband HF Vertical Antenna, I've seen these beauties in action and can highly recommend this antenna for those wanting to establish a serious DX antenna.

In this video, "David S" begins a three-part series on the MVBE-1 Vertical Antenna, taking us step-by-step through the unpacking, ground and radio preparation, construction, testing, and final on-air operation.

David approaches his task with enthusiasm and a touch of humor, since assembly of this antenna is far from easy.  David pays particular attention to detail and the building of a decent support and ground radial system.  In parts 2 and 3, we learn how to correctly assemble the antenna and conduct preliminary testing of the system.

Tuning is accomplished by using the DX Engineering multiband vertical UNUN and your in-shack wide-range tuner.  Coming up next:  Part 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).

Monday, May 6, 2019

Homebrew 2M Moxon antenna project. Post 1858.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=OEWb_H2m5k4.

How would you like to build a simple, lightweight 2 meter antenna for both portable and home station use?

In this video from Paul Athersmith, we learn how to make a homebrew 2 meter Moxon Antenna that is easy to build and is small enough to take with you on portable and emergency operations as well as serve as your prime 2 meter antenna at your QTH.

Paul takes you step by step through the design, construction, testing, and on-air operation of this inexpensive, efficient 2 meter antenna.  Most of the antenna materials can be found at the nearest building supply outlet or neighborhood hardware store.  Why not make a 2 meter Moxon Antenna for the upcoming ARRL Field Day?

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).

Sunday, May 5, 2019

Portable dipole ham stick MFJ-347 mount. Post 1857.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=SYypZ0Ot55I.

A nicely done and easy-to-understand tutorial on how to convert 2 "Ham Stick" antenna elements into a portable or emergency HF dipole antenna.  The key to this antenna is the MFJ-347 antenna mount which allows you to make a quick, effective dipole antenna for any portable operation, including the annual ARRL Field Day, a casual day at the park, or even on-air activities from deed-restricted properties (HOA/CC&Rs).

According to KJ4YZI of the "HamRadioConcepts" Amateur Radio Channel, this antenna is simple, easy to set up and take down, and only requires a minimum of support pieces.  If you already have a fiberglass mast and a tripod, most of your work is done.  Although you won't get superior performance from this antenna, you will be able to get on the air and make contacts, especially away from crowded urban areas.  Don't let your old "Ham Sticks" go to waste--turn them into portable antennas for your "go-kit."

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).

Saturday, May 4, 2019

Balloon Antenna Field Day 2016, Post 1856.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=GEDneotW3ko

With the ARRL Field Day rapidly approaching (last full weekend of June), it may be time to consider what antennas will be used in this annual emergency field communications exercise and contest. 

Now that propagation is favoring the lower HF bands (40, 80, 160 meters), you may want to consider a specific antenna for each band.  In this Field Day video from 2016, "Ham Prepper" shows us how his club solved the height issue on 160 meters with a balloon-supported 1/4 wavelength antenna.

After some preplanning and the collection of a skilled crew, the balloon-assisted antenna was launched successfully.  This somewhat unusual antenna produced good contacts for the club and helped boost its overall score.

Make a few experimental HF antennas, test them in a nearby park or field, and prepare for some fun at the end of June.

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 3, 2019

Three-Wire Dipole Antenna. Post 1855.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=zWWhNABrx4I

I'm always looking for unusual antennas that can expand the basic capabilities of simple dipoles and verticals.  The Three-Wire Dipole is such an antenna.

In this video, Stan Gibilisco (W1GV) shows us how to build this unusual antenna and describes its advantages and drawbacks.  The antenna is fed with open wire (300 ohm twin lead, 450 ohm ladder line, or homebrewed 600 ohm feed line) and uses an antenna transmatch (i.e. "tuner") with optional balun to reduce RFI and SWR. The space between the top horizontal antenna element and the bottom antenna element is approximately 12 inches /30.48 cm.  The antenna is capable of multiband operation. 

If you're looking for a different kind of dipole, then the three-wire dipole may be what you're looking for.

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.
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 2, 2019

Antenna Types and Terminology: AD#30. Post 1854.


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.

In this video, Dave Casler (KE0OG) does an excellent job of making often complex antenna theory easy to understand.  Dave takes us from simple dipole and vertical antennas to a basic overview of gain antennas, pros and cons of "traps", and how to choose the right feed line for your new antenna.  This video would make an excellent introduction to antennas for both new operators and the experienced ham who may have gotten a bit "rusty" on antenna theory and application.  Dave's presentation is clear, informative, and often entertaining.

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, May 1, 2019

Baluns and Chokes: Ham Radio Q and A Episode 3. Post 1853.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=zpUSe0yrxjs.

In this video, Michael Martens (KB9VBR) discusses baluns and chokes and how these components can prevent RF energy from traveling down the outside of your coaxial cable and creating needless interference to your electronic equipment.

Michael does an excellent job of explaining common mode currents, baluns, and RF chokes.  If you use coaxial cable to feed your HF/VHF/UHF antennas, then this video is for you. Keep a copy of this video in your reference library and refer to it whenever you need a balun or choke for your antenna 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://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, April 30, 2019

Ham Radio - NVIS antennas and the Chameleon MPAS. Post 1852.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=KQJw9j-moEg

Here's all you need to know about NVIS (near vertical incident skywave) antennas.  Kevin Loughin (KIB9RLW) provides an excellent review of the theory, construction, and use of NVIS antennas. As an added bonus, he analyzes the pros and cons of the Chameleon MPAS (Modular Portable Antenna System).

If you need an effective antenna for local, regional, and state-wide coverage, then a NVIS antenna may be what you're looking for.  Kevin does a good job of explaining where these antennas fit into the overall antenna portfolio of an 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 every 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, April 29, 2019

How to build a Yagi Antenna out of a tape measure (HAM Radio)


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=ff5sZUkdLac.

Here's a simple, practical, and easy-to-make 2 meter Yagi Antenna made from steel tape measures, a few pieces of wood, and some "odds 'n' ends" laying around your shack.  This type of antenna has gained some popularity by those involved in "fox hunting" (radio direction activity) or mountain top operations, such as SOTA (Summits On The Air).

The video does an excellent job of explaining the steps needed to make this high performance 2 meter antenna.  Make one for your emergency "go-kit" or for that next mini-DXpedition to the nearest campground or public park.  With a little weatherproofing, and a sturdy mast, you could even use this antenna for your home 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, April 28, 2019

Extended Double Zepp Antenna, Post 1850.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=3j3BsYbzwvw

If you're thinking about a new antenna for the ARRL Field Day (last full weekend of June), why not consider the "Extended Double Zepp" for your portable station? 

The EDZ is a collinear array of two 5/8 waves in phase that can deliver up to 3dB of gain for your favorite amateur radio band.  Because EDZ's can be a bit large (1.25 wavelengths measured horizontally), you may want to consider something like 20, 15,or 10 meters for this fairly simple project.

In this video, Stan Gibilisco (W1GV) explains the theory and operating parameters of this antenna which can deliver better performance than the basic dipole antenna.

According to AC5UP, the EDZ antenna "is easy to build, isn't fussy about height or proximity to other wires, can be tuned to a broadband 1:1 match, and makes a dandy general purpose SWL antenna that 'hears" extremely well."

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, April 27, 2019

N4KC's Top Five Multiband Antennas. Post 1849.

N4KC's Top Five Multiband Antennas. Post 1849.

Source:  https://www.eham.net/articles/37986.

Accessed on 27 April 2019, 2115 UTC, Post 1849.
Copyright by Don Keith 2016.

Summary:

Over the past few years, I've had the pleasure of helping several new amateur radio operators get on the air with simple, easy-to-make HF and VHF antennas. Most of these antennas were made from salvaged materials or items bought at the nearest home improvement center or neighborhood hardware store.  

Many of my ideas came from this article by Don Keith (N4KC), who has the unusual ability of making even the most difficult antenna questions understandable.

In this post, Don recommends five simple multiband HF antennas that will get you on the air quickly with a decent signal.  Here they are along with two honorable mentions:

The classic G5RV from Louis Varney (SK).
The dipole fed with open wire parallel feed line.
Trap verticals and dipoles.
The Windom.
The "Fan Dipole."

Honorable mentions:

The Hex Beam.
The one-wavelength horizonal loop.

Any one of these basic HF antennas should provide you with hours of fun and education.

----------------------------
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, April 26, 2019

How to add additional bands to 4-BTV Antenna-EZ Project. Post 1848.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=e55qGrmww0E.

The Hustler 4-BTV vertical antenna is a popular choice for radio amateurs who want a simple antenna for limited spaces.  The antenna's original design didn't incorporate the 12 meter and 17 meter bands which have become popular in recent years.

In this video from Tinker John (W5CYF), we learn how to add an additional band to the 4-BTV without compromising the other bands covered by the antenna. 

In this case, John adds the 17 meter ham band (18.068 MHz-18.168 MHz) with a few simple attachments that can be made in your garage or workspace.  The finished product appears to function as a folded monopole antenna.  The same process shown in this video can be used to add other amateur radio bands not covered by the 4-BTV.  The video is clear and easily understood.

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 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, April 25, 2019

Antenna Tilt Base- EZ Project (Ham, CB, TV). Post 1847.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=XaPUn9wy_hw.

Here's a great antenna tilt base idea from Tinker Tom (W5CYF).  This tower/mast accessory can help radio amateurs living in deed-restricted housing (HOAs/CC&Rs) by lowering the mast from public view during non-air time.  A tilt base will also help you lower your vertical or inverted V antenna before a storm approaches.  I use a cruder version of W5CYF's idea to lower my inverted V whenever I'm not using the antenna or are away from the shack.  Out of sight, out of mind.  If you're living in an area prone to thunderstorms, you may want to consider this antenna tilt base project.

W5CYF does a good job of showing us how to plan and build this valuable mast accessory.  You should be able to buy most of the tilt base materials from the nearest home improvement center or hardware store.

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, April 24, 2019

Building a cheap radio tower. Post 1846.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=5xxu6svP11s.

Here's a fairly simple and inexpensive tower/mast that you can build to support a lightweight VHF/UHF/HF antenna.  According to the video's producer, this mast was built using recycled materials.  The mast is supported by both a stiff ground rod and by two braces attached to the building.  Please notice the use a "drip loop" in the coaxial feed line to keep rain from penetrating the operating position.  The only thing I would add to this excellent set up is some form of lightning protection.

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, April 23, 2019

Chameleon Emcomm III Portable Antenna (Winter Field Day) - Ham Radio Q&A. Post 1845.


If you can't see the video, please insert this title URL into your search box: https://www.youtube.com/watch?v=H5AHKAz3Zh4.

While many of my fellow radio amateurs are content with the annual ARRL Field Day held on the last full weekend of June, there are those who challenge both their equipment and survival skills by setting up field stations in the dead of winter.

Such is the case with Michael Martens (KB9VBR) and Joe Schoebel (KD9CJX), who put their new Chameleon Emcomm III Portable Antenna to the test this past January (2019). The video takes you from antenna launch through actual on-air reports in a cold midwestern field day operation. 

According to Michael and Joe, the Chameleon Portable HF Antenna works very well and is "ideal for hiking, camping, and both for tent and recreational vehicle
camping."  You may want to try one of these simple, easy-to-use antennas for this upcoming ARRL Field Day 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://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, April 22, 2019

6 Meter Portable Dipole - N7JFP. Post 1844.


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

In this video, N7JFP takes us step-by-step through the design and construction process for a simple, inexpensive 6 meter portable dipole antenna suitable for both field and home use.  The antenna uses commonly available parts, including some PVC boxes/pipes, rubber grommets, adhesives, and 2 collapsible antennas measuring 51 to 52 inches (129.04 cm to 132.08 cm) fully extended.  You can see a full list of the materials at 13:08 in the video. 

N7JFP used a MFJ-269 for SWR testing.  He was able to get a usable SWR over the entire 6 meter amateur radio band.  This would make an interesting weekend project which could be used in the annual ARRL Field Day emergency exercise (last full weekend of June).

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, April 21, 2019

Windom Antenna. Post 1843.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=5PbOfZYzCUE.

One of my favorite "classic" hf antennas is the off-center-fed dipole known as the "Windom Antenna."  The original design was created by Loren Windom (W8GZ) in 1922.  This off-center multiband antenna was fed just by a single wire connected on 1/3 of the antenna's overall length.  The feed impedance was approximately 600 ohms. 

Modern day descendants of Windom's original design use open-wire feeders to attain multiband hf capability, thus reducing some of the TVI and other interference issues commonly found in the single wire feed system.

In this video, Stan Gibilisco (W1GV) explains the general theory behind the "Windom Antenna" and outlines some of general parameters and performance capabilities of this "classic" wire antenna.  Properly designed, this antenna gives multiband HF performance at minimum cost.

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.
https://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, April 20, 2019

WINNING Combo! Elecraft KX2 End Fed Random Wire Antenna | QRP Portable. Post 1842.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=12p6Tq-sGYI

Now that spring is turning into summer in many parts of the Northern Hemisphere, many radio amateurs/hams are taking to the "field" for portable operations.  A few trips to a neighborhood park with your "go-kit" will provide plenty of on-air experience before you settle down for the annual ARRL Field Day during the last full weekend of June.

In this video from "AnythingWithWheels", we see how to set up a portable field station using an Elecraft KX2 transceiver, a Packtenna, and an end fed random length wire antenna.  This video was taken at a public park in St. Charles, Missouri.  One of the good things about this location was the abundance of trees and open spaces.  With a little planning and your emergency "go-kit", you, too, will have some "Field Day" fun before the actual event.

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, April 19, 2019

The N9SAB Ultralight 80-6 Meter Off-Center Fed Dipole. Post 1841.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=K3EA_bD8hME

If you need a small, compact, multiband HF antenna for the ARRL Field Day or for any portable operation, you may find the N9SAB Ultralight 80-6 Meter QRP Off-Center Dipole a good choice.

In this video from "Outdoors On The Air", we see this simple antenna deployed in a "Field Day" scenario and learn of its capabilities and limitations in a portable operation.  If you have sufficient space and a few tall trees, this antenna may be the ideal choice for your "Field Day" 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).

Thursday, April 18, 2019

Building a "Dirgly Balun" to Make a Windom Antenna from a RadioWavz OCF ...


If you can't see the video, please insert this title URL into your browsers search box: https://www.youtube.com/watch?v=zFB0ycu9SyE

A nicely done video from Faith Hannah (AE4FH) as she and her two children build what AE4FH calls a "Dirgly Balun" (Dirty + Ugly) to use with a modified RadioWavz OCF Dipole.  What she and the children create is a "pseudo" multiband "Windom" antenna that fits into the family property and offers coverage over several amateur radio hf bands.

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, April 17, 2019

Building a multi-band Vertical ham radio antenna DX Commander Part 3. Post 1839.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=bGY1BU627Hs

Welcome to the final segment (part 3) of building the multi-band vertical antenna from Callum McCormick (M0MCX).  In the first two parts, Callum takes us through the basic assembly process, from unpacking of the antenna kit to preparing the shock cord connectors and hose clamps.

In part 3, Callum brings all of the separate steps together to form an efficient , multi-band HF vertical antenna suitable for both home and field use.  Callum takes us step-by-step through the antenna's final assembly, erecting, testing, and adjustments necessary to make this antenna a good DX performer.  Callum does an excellent job of blending antenna theory and practice as we slowly build this HF vertical antenna.  His explanations are clear, concise, and easy to follow.

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

http://www.HawaiiARRL.org.
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, April 16, 2019

Building a multi-band Vertical ham radio antenna DX Commander Part 2. Post 1838.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=E5JIWahmhL8

This is part 2 of a 3 part series on how to assemble, erect, and use the "DX Commander" Vertical Antenna from Callum McCormick (M0MCX).

In part 1, we unpacked the multiband vertical antenna, inventoried all parts, and began to assemble the basic antenna.  In part 2, Callum helps us prepare the "shock cord connectors" and hose clamps.  You will find this step involves some trial and error steps before these components are finished.

Like the first video, Callum does an excellent job of taking us from the very beginning of this antenna project to its completion.  Part 3 will help us complete the multiband vertical antenna, which should prove to be an successful DX grabber.  Callum does a first class job in these videos--explanations are educational, occasionally entertaining, and thoroughly detailed.

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).

Monday, April 15, 2019

Building a multi-band Vertical ham radio antenna DX Commander Part 1. Post 1837


If you can't see the video, please enter this title URL into your browser search box: https://www.youtube.com/watch?v=ODkA9JG2UaA

Callum McCormick (M0MCX) show us how to build his "DX Commander" multi-band HF vertical antenna from the very beginning to the final assembly. Callum "shows us every detail, every process used in the build, from assembly to final test and disassembly."

An excellent video tutorial which should help you make an efficient DX antenna for both home and portable use.  Callum also gives us a guided tour of his antenna lab and ham shack.  Nicely, done!

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, April 14, 2019

The 6 meter Delta Loop Tutorial. Post 1836.


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

Delta Loop Antennas are easy to make, fun to use, and offer a bit of gain over a dipole antenna.  In this video from Milton (M0ZMF), we get a thorough tutorial on how to design, build, adjust, and use a 6 meter delta loop antenna.  Martin provides a complete list of materials and takes us step-by-step from beginning to end. His instructions are clear and easily understood.  Make this antenna and join the fun on the "Magic Band."

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 from the ARRL).
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, April 13, 2019

Homemade dummy load. Post 1835.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=Yx5F1jUFySM.

Here's an interesting idea for those of us who need a quick and simple RF dummy load for testing our transceivers.

According to "the250rider", materials for this easy project include (8) 100-ohm-1/2 watt-5% tolerance resistors in a series-parallel circuit immersed in a small jar with vegetable oil acting as a heat absorber.  This might suffice for QRP operations or for any other project needing only small amounts of power.

For the latest Amateur/Ham Radio news and information, please check 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.
htttps://bigislandarrlnews.com.
https://www.eham. net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Friday, April 12, 2019

How to build a Fan Dipole Amateur Radio Antenna 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=UAlPQbf0SV0.

With the ARRL Field Day soon approaching (the last full weekend in June), it's time to make a simple, effective, inexpensive, and highly portable multiband HF antenna for that exciting outdoor operating event.

In this video, Callum McCormick (M0MCX) show us how to design, make, erect, and use the "classic Fan Dipole Antenna."  As Callum explains, the antenna is quite simple--multiple mono band dipoles are attached to a common center connector which is connected to a single feed line.  Just trim the lowest frequency dipole antenna first and continue trimming for each band of use.  Be sure to leave some space between each dipole to make trimming and tuning easier.  Although an antenna "tuner" isn't necessary, keep one handy just in case SWR becomes a problem.

After Field Day use, keep this antenna as a handy portable antenna for emergency or other field operations.

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 the ARRL).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Until next time,

Russ Roberts (KH6JRM).

Thursday, April 11, 2019

Amateur Radio Antenna Lightning Protection. Post 1833.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=bpl3TRXqaoM.

Thanks to "North Caroline Prepper" for this video on how to protect your antennas from lightning strikes.  Now that spring is here and summer isn't far behind, now is the time to "harden" your equipment against lightning and other damaging electrical surges.

This video gives you a good idea of the surge protectors and lightning arrestors needed to shield your equipment and other ham radio gear from summer storms.

I use a similar system at my shack.  I also lower all of my verticals and inverted vees, unplug all equipment, and detach all feed lines when I'm done operating for the day.  I attach all antenna feed lines to an 8-ft/ 2.43 meter copper ground rod outside the shack.

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, April 10, 2019

Very simple portable dipole. Post 1832.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=CPPP3JWNJLY.

If you need a simple, inexpensive, and easy to erect portable antenna for the 40 meter amateur radio band (7 MHz), then this idea from Peter Marks is worth considering.  The antenna resembles an inverted Vee and is supported by a 6 meter/19.68 feet "squid pole."  An aluminum ground stake anchors the antenna.

The video also shows us Peter's compact "go-kit" featuring the popular KX3 transceiver from Elecraft.

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://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, April 9, 2019

Ham Radio Basics--W6LG Makes A Dummy Load From Christmas Lights, Dummy L...


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=1e7Y6YFpikE.

Would you like to keep the "Christmas Spirit" alive in your shack all year and have an antenna and a RF Dummy Load at the same time?  You can if you follow this idea from Jim (W6LG). 

In this well-produced, easy to understand video, Jim shows us two ways that Christmas Tree lights can act as part of an antenna and also function as a RF Dummy Load for in shack testing and experiments.

A thoroughly "enlightening" (forgive the pun) 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://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, April 8, 2019

Securing radials for vertical antenna-safe, environmentally friendly. Post 1830.


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

Here's a helpful tip from "therixsterinnj" on how to install a safe, "environmentally friendly" ground radial system for your HF vertical antenna.

These suggestions are worth noting:
"Please do not use metallic "garden staples" to secure radial wires to the top of the ground in a lawn. They may rust and become dangerous daggers that can seriously injure children or even adults. They can turn into projectiles if hit by a lawn mower. In this short video I show how easy it is to use wooden dowel material to do an even better job, which is much much safer. About $10 worth of wood dowel should do for 16 radials. You can attach several along the length of the radial if needed. 73"
---------------------------------------------

Also, you may want to try a system of elevated radials to make sure your radials don't get "tangled up" in your lawn mower.  If you need need to establish a ground radial system, you may want to use a lawn edger or pizza cutter to create a shallow groove into which you place your radial wires.  Grass will soon cover the shallow trench, this hiding your radial system and providing an extra margin of safety.

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, April 7, 2019

Building a Doublet Aerial. Post 1829.


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

The classic multiband HF doublet antenna is a surprisingly effective antenna which is easy and fairly inexpensive to make.  Fed with balanced feedline and connected to a balun/"tuner" combination, the doublet will let you cover any amateur radio band between 160 and 6 meters.  Just cut the antenna for the lowest frequency of use and you're on the way to a decent, high performance antenna which won't close out your credit card.

In this video, "One Time Pad" takes us through the entire design, construction, tuning, and use process.  Here us the list of materials needed to make this antenna reality:
"Antenna Components: Copper wire for radiating element (I used multi –strand Flexweave) Ladder line/Open wire/Ribbon (I used 300Ω ribbon because its neater) x3 eye bolts with associated nuts as washers x1 straight wastewater pipe connector x2 access plugs for above wastewater pipe connector x2 wing nuts and bolts x2 Dog bone Isolators (to isolate end of each antenna leg) x1 spool Rosin core solder (i.e. solder with embedded flux) Cable ties Heat shrink tubing Mast Components: You will need to determine your mast location in advance. You will also need to determine where each (equally sized) leg of your antenna will end and then identify to what you will fix them to. Remember, the legs have to be electrically isolated wherever they terminate. x1 antenna mast (may take more than one section to reach desired height) x2 sets T & K wall brackets (to mount mast) Fixing bolts and Rawl plugs for above brackets U Bolts to fix mast to brackets x1 long bolt to act as antenna boom with fixings to hold pulley x1 Pulley x1 carabineer x1 rope/cord to hoist antenna Fixings to anchor dog bone isolators (dependent on situation) Tools: Screwdrivers (manual/electric) Spanners Socket set/torque wrench Drill (with selectable hammer action) Drill bits for metal (for work on mast) Drill bits for concrete/brick (for mounting mast brackets) Drill stand (with vice) Soldering Iron (need minimum 40W to do large gauge antenna wire) Heat gun (for heat shrink tubing) Permanent marker (for marking antenna length etc) Stanley knife Small file Safety googles Remember Be safe! I needed help with ladders etc. http://southdublinradioclub.weebly.com"
--------------------
Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, April 6, 2019

Six Meter Folded Dipole Antenna. Post 1828.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=qbje13U6hC4.

An excellent video tutorial from Claude Jollet (VE2DPE), despite the lack of a voice track.  The video and slides provide enough guidance for  you to build your own 6-meter folded dipole antenna.

Claude made this antenna from ladder line, fed with ladder line, and matched with a step down 4:1 coaxial balun at the bottom of the transmission line.  Claude says the antenna is resonant at 50.4 MHz, with a SWR below 1.3 to 1 between 50.0 MHz and 51.0 MHz.

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, April 5, 2019

1/4 wavelength Inverted L antenna for 160 meters. Post 1827.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=Uq4mbrRihrw

If you want to get on 160 meters, but don't have the space needed for a full length vertical or horizontal dipole, then this Inverted L antenna from VE3IKU may be what you're looking for.  This antenna has a vertical length of 35 feet/10.67 meters and a horizontal spread of 94 feet/28.65 meters.

According to VE3IKU, this 160 meter antenna "needs no tuner, fits on a city lot, and is very efficient."  The introduction to the video features two "classic" HF antennas--Hiram Percy Maxim's 1AW antenna and the top-loaded vertical on the ill-fated "RMS Titanic."

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, April 4, 2019

Best Slingshot Antenna Launcher for Ham Radio. Post 1826.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=ZtJvTQ2oogQ.

One of the easiest ways to launch your HF antenna into tall trees is to use a modified slingshot/casting fishing reel combination as shown by N0KTZ in this well-done and easily understood video tutorial.  Although any brand of slingshot will work, N0KTZ recommends the "Shelton 3.0 Magnum Custom Wrist Rocket Slingshot".  You should be able to find most of the launcher parts at your neighborhood building supply or hardware store.  I use a cheap slingshot from WalMart to launch most of my tree-supported antennas.  The modification shown by N0KTZ offers arm support and better aiming capability.  You could also use a bow and arrow to shoot your antenna wire through the tree canopy.

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, April 3, 2019

Building a Radio Tower.mpg. Post 1825.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=Aqlr9qxUXxc.

Building an amateur/ham radio tower to support your dream antenna farm is serious business, especially if you're a member of the Paul Bunyan Amateur Radio Club in Bemidgi, Minnesota and want to erect a tower in the dead of winter.

Thanks to David Quam for showing us the planning, equipment, and safety issues involved in this project.  Even if your weather is warmer than Bemidgi in the winter, please don't erect your tower alone.  If you can't tap the resources of your radio club, then hire a professional engineer and rigging crew to assemble, erect, and test your tower.  "Better safe than sorry."

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, April 2, 2019

Build a Coax Tester! Post 1824.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=WJXr9LEE0vk.

Here's a handy accessory that every ham shack needs--a nice, simple, and easy to make coaxial cable and connector tester.  In this video, Dave Turlock (KG0ZZ) shows us an easy way to check PL-259 connectors and trace patch cables used in amateur/ham radio and CB applications.  Make one of this basic testers for your shack and be sure to include this device in your emergency "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;//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, April 1, 2019

Antennas, Radiation Patterns, Baluns, and SWR for Beginners. Post 1823.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=GPeP9YV72mc.

This simple, direct tutorial from"Amateur Radio World" covers most of the basic antenna concepts, including elementary antenna theory, various radiation patterns, the use of baluns, and SWR.  The explanations are clear and well illustrated. This video should be part of any introductory amateur/ham radio license course.  Perhaps the video would have been a bit easier to understand if the producers used both the traditional "foot-pound" and SI (metric system) antenna formulas.

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

http://www.HawaiiARRL.info.
http://arrl.org.
http://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, March 31, 2019

My Kit for SOTA/Portable Amateur Radio. Post 1822.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=nkiht95YCP4.

If you enjoy portable field operations, why not become active in the SOTA (Summits On The Air) program?  In this video, SOTA enthusiast James (M0JCQ) shows us his standard, "bare bones" kit for HF SOTA/Portable Operations.  This kit is simple, inexpensive, and thoroughly portable.  Even if you aren't into hiking up mountains and hills in your area, this minimalist HF set up can serve as a home emergency station should the need arise.  With the exception of James's Elecraft KX3 transceiver, most of the materials for this "go-kit" can be found at the nearest home improvement center or electrical equipment outlet. James also mentions the importance of taking your amateur radio license with you in case someone asks what you're doing on top of a mountain.

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, March 30, 2019

Radials on Vertical Antenna Systems. Post 1821.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=bo302ABvOro.

Thanks to Dan Vanevenhoven for this excellent tutorial on radials for vertical antenna systems.  Dan begins the video with some basic vertical antenna theory and then shows us how theory translates into practice for a commercial AM broadcast station.  As you can see, radial systems for the MW AM broadcast band can number as high as 120 to 360 ground wires and consume a large chunk of real estate.

For radio amateurs, the demands of a ground radial or counterpoise system are more modest.  The idea is to place as many radial wires as you have space, budget, and wire to do so.  Dan does a good job of explaining how radials increase antenna efficiency without getting too technical.  Basically, radial wires supply the "missing half" of a vertical antenna.  Depending on frequency and space availability, you may want to try an "elevated radial system", which can often be sufficient for decent HF communication.  If you use a metal base plate to attach your radial wires, make sure the plate is mostly copper.  DX Engineering has a good design which is sturdy, weather tolerant, and easy to use.

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, March 29, 2019

Homebrew vertical antenna 40m band by YC2YIZ. Post 1820.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=HXsYbp-lEt0

If you need a small, "stealth-like" antenna for the 40 meter ham band, then this center-loaded design from Edy Karsano (YC2YIZ) may be your answer.  Edy takes us through the design, building, and tuning process of this portable 40 meter vertical antenna.  He used a MFJ Antenna Analyser to make SWR adjustments to the antenna.  Although the antenna covers the 40 meter ham band, it can also work on the 15 meter ham band, using the third harmonic of the 40 meter band.  When you complete this easy project, you will have 2 antennas for the price of one.

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, March 28, 2019

Feed-point Connector for Inverted V Dipole Antenna. Post 1819.


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 a simple, effective way to strengthen the feed-point connection for an inverted V Dipole Antenna.  Dave Turlock (KG0ZZ) takes us step-by-step through the design and construction process for this handy antenna accessory.  Be sure to protect the connector against the weather with paint or some other water-resistant substance.

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, March 27, 2019

Hamstick Dipole set-up at WA0FSE - July 9 2016. Post 1818.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=w5YdTarpDHU

A "Hamstick" Dipole from MFJ (HF-Stick) makes a nice, simple, portable antenna suitable for both home and field use.  In this video, WA0FSE and WX0V show us how to trim the antenna and set it up for use.  The only materials you would have to find would be a tripod, a short telescoping fiberglass rod, some coaxial feed line, and a dipole connector mating two MFJ "HF-Sticks".  Other than speaking into the backside of a microphone, initial testing of this antenna went extremely well.  Antenna experiments are a great way to learn about propagation, SWR, bandwidth, and general antenna theory.  I liked this video because of its "down to earth" and easy to understand instructions.  Yes, like our intrepid antenna experimenters, I have also used the wrong end of the microphone at times.  We're only human.

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, March 26, 2019

Windom antenna: building and testing. Post 1817.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=n6e4P27FGTE

Nebojsa Kovacevic has done an excellent job of presenting the advantages and disadvantages of the "classic" Windom antenna.  Nebojsa takes us step-by-step through the design, construction, and use of this multiband, off-center fed dipole antenna.  One of the downsides of the classic Windom antenna is the length required for proper operation. In this video, Nebojsa has sufficient space to cover at least six amateur radio bands.  Although his design doesn't require an antenna transmatch (i.e. "tuner"), it may be a good idea to use one to keep SWR low and reduce RF on the antenna 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).

Monday, March 25, 2019

Building a 40 Meter Rotatable Dipole. Post 1816.


If you can't see the video, please insert this title URL into your search box: https://www.youtube.com/watch?v=k1fs-zYCfRY

A very nice and well-organized video tutorial from Jonathan Charles as he shows us the steps needed to construct a rotatable 40 meter dipole.  According to Jonathan, he used parts from MFJ HyGain, MFJ Cushcraft, Texas Towers, M2, and his local hardware store to build this impressive all metal dipole antenna.  At an elevation of 85 feet/25.91 meters on his tower, the antenna will perform quite well. 

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.
https://www.eham.net.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, March 24, 2019

Adding 80 metres to a 40 metre dipole. Post 1815.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=4kXRz6fPFKY.

If you live on a small urban lot, erecting a full-sized 80 meter dipole antenna will present a difficult challenge.  According to Australian ham Peter Parker (VK3YE), a simple 40 meter dipole antenna can be modified to work at 3.5 MHz (80 meters) by adding end-loading coils.  Although the "transformed" antenna won't be as efficient as a full-length 80 meter dipole, it will get you on the air with a somewhat narrower bandwidth.  Peter's adaptation comes from an original design by VK5AH.

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, March 23, 2019

Homebrew EH antenna for 40M band. Post 1814.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=DWR5d7t0WAw

Here's an interesting antenna experiment from Paul (OM0ET).  In this video, Paul builds an EH antenna for the 40 meter band--the antenna is based on a design by WB5CXC (SK).

Although the build was successful, Paul admits that the antenna may be of questionable value, since "this antenna has the problem of a strong returning RF in to coax...this is a big problem with resonant frequency stability due to this problem...This is the reason why I never tryed (sic) this antenna in a real outdoor conditions (sic)."

Of course, your results will vary, depending on the materials used and the general environment in which the antenna is placed.  If you need a better and perhaps  safer antenna, please try a magnetic loop or indoor loop 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).


Friday, March 22, 2019

Palm sized L match antenna coupler. Post 1813.


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

Australian radio amateur Peter Parker (VK3YE) has designed a small, inexpensive, and lightweight antenna transmatch (i.e. "tuner" or "coupler") for end-fed random length "long wire antennas."  This "palm-sized" L "tuner" covers 7 to 30 MHz and is suitable for QRP home or field operations.  Peter supplies a helpful schematic diagram to help with design and construction of this useful antenna accessory.

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, March 21, 2019

QRP/ SOTA Ultimate 40-6M All Band Antenna from W1SFR


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=i-mj1Iyox9Y

If you need a simple, effective antenna for portable, emergency, or even home use, then this homebrew end-fed long wire antenna from Steve Roberts (W1SFR) may be your answer.  This handy, well-made antenna is perfect for an emergency "go-kit", camping, or for use in deed-restricted housing (HOAs/CC&Rs).  All you need is some 14-18 AWG wire, a launching method, a small antenna "tuner", a basic ground radial or counterpoise system, and a QRP rig.  All of this material can be packed in a small box and saved for your next "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).