Tuesday, July 31, 2018

Ham Radio-The Simple Coax Cable Emergency Prepper Antenna. Post #1571.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=tafy51yUzQo.

With a few basic tools and some 50 ohm coaxial cable, you can make an emergency 2 meter antenna for home or portable use.  Kevin Loughin (KB9RLW) shows us a simple, easy way to make a fully functional 2 meter antenna from common materials in your shack.  Why not make this antenna for your "go-kit" or for your club's Field Day event?  You never know when an emergency will strike.

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://hamradiohawaii.wordpress.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Monday, July 30, 2018

Super Expedient Stealth 160 Meter Antenna. Post #1570.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=pcnWkbiD79c.

Operating on 160 meters can be a difficult challenge for radio amateurs living in deed-restricted apartments and homes (HOAs/CC&Rs).  However, if you're willing to accept a few compromises in terms of height and orientation, you can still make contacts on the "Gentlemen's Band".  "Ham Prepper" has done just that with a meandering, stealth wire antenna attached to the back of his home and anchored to his property's privacy fence.  With the aid of a MFJ-989c antenna "tuner" and a simple ground radial system, this radio amateur was to make successful contacts on 160 meters.  This antenna is basically a NVIS (near vertical incident skywave) arrangement, which provides good local and regional coverage.  With the MFJ "tuner" and the 300 ohm feed line, this antenna has multiband HF capability.

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://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, July 29, 2018

Attic Antennas for Ham Radio. Post #1569.


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

Here's an antenna idea for radio amateurs living in deed-restricted apartments and homes.  According to Stan Gibilisco (W1GV), the attic of your home or apartment may have sufficient space to install a simple dipole antenna.  Depending on the type of roofing materials used in your home, an attic antenna may offer good performance while being totally invisible to prying neighbors. It's worth a try. Afterall, a compromise antenna is better than no antenna.

For the latest Amateur/Ham Radio news and information, please visit these web 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://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, July 28, 2018

80m END FED NVIS FIELD ANTENNA. Post #1568.


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

If you need a simple, reliable antenna that will cover your region, county, or state, please consider building a Near Vertical Incidence Skywave (NVIS) antenna.  In this video from NG9D, we learn how to design, build, and use an 80 meter NVIS antenna.  The video includes details of this antenna, the theory of operation, and a brief demonstration of the NVIS antenna during daytime 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).
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Friday, July 27, 2018

W5ALT Indoor Vertical Antenna. Post #1567.


W5ALT Indoor Vertical Antenna. Post #1567.

http://www.comportco.com/~w5alt/antennas/index.php?pg=3.

Author: Walt (W5ALT).

Accessed on 28 July 2018, 0426 UTC, Post #1567.

Please click link to download the full article.

Comment:

Radio amateurs who are forced to use compromise antennas because of deed restrictions (HOAs/CC&Rs) face some difficult challenges if they want to get on the air. There's no need to give up Amateur Radio if you're willing to research the idea of hidden or "stealth" antennas.

Such a resource is this article by Walt (W5ALT), who designed a simple base-loaded vertical antenna using aluminum rods (curtain hangers), a plastic waste bucket, a few baseboard radials, and a sturdy antenna "tuner" to tune from 6 to 40 meters.  Walt says his homebrew indoor vertical antenna has proven to be a success, with "300 contacts from about 50 countries" during his testing period.

The article takes you step-by-step through the design, construction, and operational phases of this simple, effective antenna.  The key element in this antenna is a tapped large coil which is used in conjunction with his MFJ antenna tuner to get multiband HF performance.  Walt says he built this antenna in about an hour for very little money.  Why not try out Walt's design for yourself.

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://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Thursday, July 26, 2018

HF Indoor Loop Antenna DIY--Simple & Easy to Build. Post #1566.


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

Here's a fun do-it-yourself (DIY) loop antenna that you can use to receive amateur/ham radio and shortwave broadcasts.  The homebrew loop covers 5 MHz to 14 MHz and can be used with many general coverage or ham radio receivers.  Note the  use of the classic Hallicrafters S-38 receiver in this video.  This project is simple, cost effective, and highly directive.  The loop junction box is particularly well-made.

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://hamradiohawaii.worldpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Wednesday, July 25, 2018

HF Mobile Antennas and Their Installation. Post #1565.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=MQI2G6uqQhw.

A good general discussion of how to select and mount HF mobile antennas from the Waters and Stanton Ham Store.  Pay particular attention to grounding and power connections.

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://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Tuesday, July 24, 2018

HF Ham Radio Random Wire Portable Antenna Back Yard. Post #1564.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=U44aXzD2LB4.

A properly designed and built random wire antenna makes an excellent portable or emergency antenna.  In this video, Larry (WD0AKX) shows us how he set up a simple, backyard ham station using only the materials found in his shack.  All you need is a rig (in this case Elecraft KX-3), an antenna "tuner", a unun matching unit, a random length of wire, a power supply, and a simple ground radial or counterpoise system.  To choose a suitable random length of wire for the antenna, please visit this website:  http://udel.edu/~mm/ham/randomwire/.  Good luck with this simple, fun to use 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).
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Monday, July 23, 2018

10 Ultra Stealth Antenna Designs for HOAs. Post #1563.


10 Ultra Stealth Antenna Designs for HOAs. Post #1563.

https://forums.qrz.com/index.php?threads/10-ultra-stealth-antenna-designs-for-hoas-260566/

Author:  KC8VWM.

Accessed on 23 July 2018, 2043 UTC, Post #1563.

Please click link to read the full article.

Comment:

Operating an amateur radio station from a deed-restricted property controlled by an HOA or some CC&Rs can be quite a challenge.  Before my xyl and I bought a home in the Puna District of Hawaii Island, we lived in apartments or rental homes that had strict requirements for any outside antennas. During those years, I was able to use a variety of loops, loaded verticals, and even mobile whips attached to my old Toyota Corolla sedan to get on the air.  Believe me, this was an adventure.  Over the years, I came across several stealth antenna ideas which have proven useful and even fun to use.

In this article by KC8VWM, we discover 10 clever stealth antenna ideas that should get you on the air without neighbors noticing how much you've "ruined the view" in the area.

In the word of KC8VWM, "This list of ultra stealth antennas has been created in hopes of assisting the radio amateur community who may be otherwise restricted" or prevented from getting on the air from their home stattions:

The weather instrument antenna.
The Solar Power Light Pole antenna.
TV Dish Antenna.
Disguised Portable AM/FM radio dipole,
Elevated Purple Martin Bird House
Fishing Rod Prop antenna.
The tire swing vertical antenna.
The Badminton Net antenna.
Bicycle Prop antenna.
Patio Umbrella antenna.

Try some of these disguised antennas and see what a little camouflage will do to keep you on the air.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, July 22, 2018

How to Make a 2 meter J-Pole Antenna with the Buddipole. Post #1562.


If you can't see the video, please insert this title URL into your browser search box: https://m.youtube.com/watch?v=C4VYNyAI-Vk.

The popular Buddipole Antenna system can be used as an indoor stealth antenna with a few minor adjustments.  In this video, we see how to configure the Buddipole Antenna as a 2 meter J-Pole.
The video is well-organized and easy to follow.  The same system can be used outdoors if conditions permit.  The video includes a list of materials, including the basic Buddipole Antenna System, a telescoping tripod, tape measure,  an antenna analyzer, and some basic tools.

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://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, July 21, 2018

Homebrew Ham Radio Antenna Mount for camping. Post #1561.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=UocnYx7HPEI.

Here's a simple, easily-made, and cheap antenna mount for portable or camping operations. Tinker John (W5CYF) shows us how to make a sturdy antenna mount for field operations, be they for camping, relaxation, or emergency use. Your neighborhood hardware store or home improvement outlet should have most of the materials needed for 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://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Friday, July 20, 2018

Homebrew EH Antenna for 40 M band (OM0ET). Post #1560.


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

If you want to experiment with a simple antenna using locally available parts, you may want to build the often controversial "EH Antenna",which has drawn both praise and criticism from both radio amateurs and commercial broadcasters.

In this video, OM0ET duplicates a design by wb5cxc for use on the 40 meter Amateur Radio band. Build one and see for yourself if the antenna claims are true or false.  You can find an online calculator for this antenna at this website:  http://www.wb5cxc.com/design_eh.html.

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://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Thursday, July 19, 2018

Building a ZS6BKW antenna from scratch. Post #1559.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=BfUbL_4VCww.

The G5RV and its popular variant, the ZS6BKW, are popular multiband HF antennas for radio amateurs.

In this video, members of the Stamford Amateur Radio Association W1EE,  show us how to build a ZS6BKW antenna capable of covering the 80 to 6 meter amateur radio bands.  Here are the guidelines offered by this construction team:

"The ZS6BKW is the successor to the G5RV. It's a multi-band 80-6 meter wire dipole. ZS6BKW started with the G5RV and then conducted extensive computer modeling to increase the gain, flatten the SWR a bit, and smooth out the lobes. It's also about 10 feet shorter than an equivalent G5RV. The antenna must be fed with 39 feet of 450 ohm ladder line and also must have at least 70 feet of coax feeding the ladder line. The coax and ladder line together form a matching network that brings the SWR below 2:1 (mostly below 2:1) on the 6, 10, 12, 17, 20 and 40 meters and below 3:1 on 15, 30, 60, and 80 meters. We're going to start with pre-cut wire and ladder line, but will make the center insulator (not just a ceramic egg) and the coax-to-ladder line interface out of PVC piping and compression joints. We'll put it together as finished product that can be mounted immediately. We'll also talk about the theory of the G5RV/ZS6BKW antennas. We'll also show how to tune it when mounting it."
--------------------------------
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://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Wednesday, July 18, 2018

My favourite magnetic loop for HF pedestrian mobile. Post #1558.


If you can't view the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=YswnVmAKSP0.

Here's another fascinating video from Peter Parker (VK3YE).  In this post, Peter shows us how to build a magnetic loop HF pedestrian mobile antenna for the 40 meter Amateur Radio band.  Peter compares copper and aluminum magnetic loops and shows how to adjust them for maximum performance. According to Peter, "Stations worked were between about 300 and 1500 km distant."

For the latest Amateur Radio/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://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 17, 2018

Magnetic Loop Great HF Apartment Antenna, Post #1557.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=IuakP-C6NTM.

If you live in deed-restricted housing (HOAs and CC&Rs), a simple magnetic loop HF antenna may get you back on the air without raising undue attention from your neighbors.  In this video, North Carolina Prepper shows us his "homebrew" HF magnetic loop antenna, which can be used indoors or outside on his patio with a few simple additions.  Just remember the old saying: "A compromised 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://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Monday, July 16, 2018

Making open wire feed line. Post #1556.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=yrREQyMI7RI.

Open wire feedline is cheap and low-loss, especially if you make it yourself.  In this video, Peter Parker (VK3YE) shows us a simple method of making your own balanced feed line for dipole antennas.  Balanced line feeders, used in conjunction with a balanced antenna "tuner" or "coupler", will allow your antenna system to tolerate significant impedance mismatches without adding much loss.  Balanced feed line used with a suitable antenna transmatch (i.e. "tuner") will permit multiband use on a single HF dipole.

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

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

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, July 15, 2018

G5RV Multi Band HF Dipole Antenna. Post #1555.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=aeNHIQ_j4Dk

This well-produced and richly illustrated tutorial on the classic G5RV HF Dipole Antenna was presented to the Brandon Amateur Radio Society in Brandon, Florida in 2017 by Bernie Huth (W4BGH).  Bernie does an excellent job of  explaining the pros and cons of this popular HF antenna from the late Louis Varney (G5RV).  Although Varney envisioned his design primarily as a 3/2 wavelength antenna for the 20 meter Amateur Radio band, radio amateurs have used the antenna for multiband use.  The G5RV is an excellent choice for the 20 meter band.  Performance on other HF Amateur Radio bands is good enough to qualify as stand alone HF antenna if you can only erect one 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://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, July 14, 2018

Amateur Radio Bicycle Mobile Setup. Post #1554.


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

Here's a way to use Amatuer/Ham Radio while you work on shedding a few pounds in useful exercise.  Why not equip your bicycle for 2 meter/70 cm mobile operation?

In this short, well-made video, "taverned" shows us how he used a mag mount antenna, a simple C clamp, and a basic ground system to convert his mountain bike into a mobile station.  The project is straight forward, simple, and gives you emergency communications while you peddle down the road.

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://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Friday, July 13, 2018

Installing a Longwire Antenna with the Palomar Engineers Multi-Ratio Cube Unun. Post #1553.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=iktlPZyGWh0.

The key to effective performance in a long wire or random length end fed wire antenna is the proper matching of the high impedance of the antenna to the low impedance of your HF rig.  In this video from "Signal Search", we learn how the Palomar Engineers Multi-Ratio Cube Unun makes the impedance match possible.  This unun, joined with with an external antenna "tuner" and a decent ground radial or counterpoise system, allows you to use a single wire as a multiband HF antenna. "Signal Search" shows us how the unun helps maximize antenna performance, while reducing RFI and SWR issues.

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-sudio-news (a weekly podcast which is updated each Friday afternoon).
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Thursday, July 12, 2018

Roll Up Slim Jim Antenna for Emergency Preparedness. Post #1552.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=196-sS2yYak.

A nicely done video from Coach Helder (W2NTC) on how to set up and use the 2m/70cm rollup slim jim/J-Pole antenna by Nelson Antennas.  Coach discusses indoor and outdoor applications of this sturdy, well-crafted antenna.  Antenna tests were made using a Yaesu VX-8DR HT.  You may want to buy two of these antennas--one for your emergency "go-kit" and the other for home use.  If you feel more adventuresome, you could make your own slim jim/J-Pole from locally available 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://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Wednesday, July 11, 2018

Cubical Quad Antennas. Post #1551.


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

A basic, no frills explanation of the theory, construction, and use of cubical quad antennas from Dave Tadlock (KG0ZZ).  Although cubical quads can be built for the HF Amateur Radio bands, most radio amateurs seem to prefer such antennas for the VHF/UHF bands where the dimensions, materials, build time are less than similar antennas for HF.  Dave does an excellent job of introducing this versatile antenna and shows you how to build one for your home shack.  If you need an antenna for serious VHF/UHF DX or to just reach a fringe repeater site in your area, then the cubical quad may be the best antenna for you.

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://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Tuesday, July 10, 2018

Tuning a CB Whip for use on the 10 Meter Ham Band. Post #1550.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=m3Oho0lcbis.

There are still many unused CB (Citizens Band) antennas collecting dust at garage sales, auctions, estate sale, and your neighborhood recycling center.  You can put these antennas to good use on the 10 Meter Amateur Radio band by making a few easy adjustments with a wire cutter and an antenna SWR analyzer.

Tony (KD8RTT) and his brother, Andy (KK4LWR) do just that in this well-made video tutorial.  In this case, Tony and Andy trim and test a coil shortened mobile CB whip for the 10 Meter band. The vertical element is trimmed and checked frequently with a MFJ-259B SWR Analyzer.  If you feel ambitious, try a similar procedure with one of those 102 in/259.08 cm steel whip antennas used on big trucks.  Years ago, I converted one of these large whip antennas to the 10 Meter band and mounted it on a telescoping fiberglass mast with four elevated radials to complete the antenna installation.  That antenna is still in use during those brief times when the 10 meter band opens.

Tony and Andy have done an excellent job of recycling an old CB antenna for Amateur/Ham Radio 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://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Monday, July 9, 2018

Homebrew 10/20/40m EFHW vertical antenna-"SOTA", Post #1549.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=29CA_IPyg9M.

A nicely done End Fed Halfwave vertical antenna from 2E0VOV.  The heart of the project is the impedance transformer, which must be carefully made to insure a safe match between the high impedance of the EFHW and your rig.  EFHWs make good HF antennas if you have limited space for a ground radial or counterpoise system.

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

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

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, July 8, 2018

Building a Doublet Aerial. Post #1548.


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

One of the best general purpose, multiband HF antennas is the classic doublet fed by balanced feeders going into a balanced antenna "tuner."  In this video, Adrian ("One Time Pad") documents the design, construction, and adjustment phases of his homebrewed doublet antenna.  Here's the complete list of materials and tools needed to build this versatile HF antenna:

"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"

For more details on this antenna, please visit http://southdublinradioclub.weebly.com.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, July 7, 2018

Top Five Get-On-The-Air-Quickly Ham Radio Antennas. Post #1547.


Top Five Get-On-The-Air-Quickly Ham Radio Antennas, Post #1547.

http://www.donkeith.com/n4kc/article.php?p=22.

Author:  Don Keith (N4KC).

Please click link to read the complete article.

Comment:

Antennas can be a confusing issue for newly license radio amateurs or for those returning to Ham Radio after a prolonged absence.

In this well-written, easy grasped article, Don suggests five basic antennas that can get you on the air quickly with a minimum of time and money.  Don's says these antennas are nearly foolproof and can be made with local resources:

  • "They are easy to build for most anyone who is willing to try and do not require any special tools or test equipment.
  • They may be crafted from easily available materials and cost very little, so there is not much downside if you mess them up.
  • They are not necessarily the be-all, end-all of RF radiators but they do work well enough to give a good experience to the user.
  • They are not necessarily the best for all situations, including for use in antenna-restricted neighborhoods or in condos and apartments. That's another article.
  • And if someone attempts to construct one of these bad boys, he or she will possibly learn a little antenna theory by osmosis and, just maybe, will become curious enough about the subject to learn more and try more challenging projects."
Here are the fabulous five antennas recommended by Don.

The Half-Wave Wire Dipole.
The Doublet with parallel feedline.
The Quarter-wavelength vertical.
The Horizontal Loop.
The G5RV.

For each antenna, Don outlines both the pros and cons of each design.  One of these classic antennas should be right for you!  So, please get busy and join us on the air.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Friday, July 6, 2018

Ham Radio HF Antenna For Limited Space, Post #1546.


Ham Radio HF Antenna For Limited Space, Post #1546.

https://www.hamradiosecrets.com/ham-radio-hf-html.

Author:  Claude Jollet (VE2DPE).

Accessed on 06 July 2018, 2050 UTC, Post #1546.

According to Claude Jollet (VE2DPE), it's possible to erect an efficient half wave length HF dipole antenna without the usual space requirements.  By carefully adjusting the configuration  of a dipole, you can squeeze nearly full dipole performance into a restricted space without losing much in the way of performance.

To do this, Claude recommends three simple HF dipole models which are easy to make, efficient, and inexpensive:

The "Full Slope" Dipole.  Just cut the HF Dipole to the desired length and suspend one segment on a tall structure, such as a homemade mast or nearby tree. Run the other antenna element to a convenient support stake near ground level.  The transmission line should be routed at a 90-degree angle from the sloper for at least a 1/4 wavelength.  The antenna will have an omnidirectional pattern, with some small gain in the direction of the slope.

Inverted "V" Dipole.  A classic antenna that drops the elements into a v shape from the horizontal.  The angle between the elements should be at least 90-degrees. You may need a choke balun in the transmission line to keep RF from the elements off the coaxial cable.

Inverted "U" Dipole.  The horizontal portion of the dipole runs for approximately 60% of the normal horizontal length, with the remainder of the antenna elements drooping down and supported by ground stakes.  Jollet says "most of the RF energy radiated by a half wave dipole is concentrated in the middle 60% of the antenna."

Try some of these limited space antennas and see if they work for you.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Thursday, July 5, 2018

N4LQ 160-10 Multiband Doublet with Auto-Tuner. Post #1545.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=0jVVQ8ReQXA.

A nicely designed and built 160-10 meter doublet antenna from Steve Ellington (N4LQ).  The key to the antenna's multiband capability is the use of a balanced feed line and an "auto-tuner" (MFJ-998). Steve says "the 60-foot (18.29 meters) of feed line presents an easy to match impedance to the tuner for 160 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://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).


Wednesday, July 4, 2018

Ham Nation 355: All About Fractal Antennas. Post #1544.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=1Tca4ZIvoxo.

Ham Nation is one of my favorite video podcasts.  Episode 355 was recorded shortly before the 2018 ARRL Field Day and contains a wealth of information for those participating in this annual event.  In addition to the regular program features (Show Us Your Shack and equipment reviews), this episode also includes an excellent discussion of Fractal Antennas, which can be used in some Amateur/Ham Radio situations. Chip Cohen provides a good, basic overview of Fractal Antennas and shows how these devices can be used for both home and portable 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).
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Tuesday, July 3, 2018

Magnetic Loop Antennas. Post #1543.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=yYbKrw8l6JU.

Apartment dwellers have some difficult antenna challenges if they want to get on the air without violating their deed restrictions or have insufficient space for an outdoor antenna.  In this comprehensive video from Bob Fleck (W4RAX), we see how a simple magnetic loop antenna can get you on the air without having to install an outdoor antenna or violate your housing rules (HOA/CC&Rs).  Magnetic Loop Antennas can also be used for portable operations where there is a lack of antenna supports

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://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Monday, July 2, 2018

Antenna for Condo Backyard-Stealth. Post #1542.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=MXTYTytR56A.

Don't let deed-restricted properties (HOA/CC&R) stop you from enjoying Amateur Radio.  In this video from AC2RJ, we see how some well-placed trees, a camera tripod, a telescoping fiberglass mast, and a "V" antenna can get you on the air without a lot of effort.  Add an antenna "tuner", a sturdy rig, such as the Yaesu FT-817, a microphone/cw key, and a simple grounding system, and you have a fully functional, nearly invisible ham station in your backyard.

For the latest Amateur/Ham Radio news and information, please visit these web 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://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, July 1, 2018

How to Build a 9:1 Unun for Ham Radio Antenna. Post #1541.


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

If you use a long or random length wire for your home or portable antenna, a good ground radial system, an antenna "tuner", and a sturdy 9:1 balun are necessary to keep SWR low and RFI out of your shack.

In this video, "Tinker John" (W5CYF) shows us an easy, simple, and inexpensive way to build a 9:1 balun for any random length wire antenna you use.  John takes us step-by-step through the design, construction, and use segments of this handy, "one-evening project."  Make two of these baluns--one for home use and the other for your mobile "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://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://amateurradionewsinformation.com (Amateur Radio News & Information).
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).