Posts

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

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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 (Amate…

Building a ZS6BKW antenna from scratch. Post #1559.

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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 b…

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

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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).

Magnetic Loop Great HF Apartment Antenna, Post #1557.

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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://ww…

Making open wire feed line. Post #1556.

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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://amateurrad…

G5RV Multi Band HF Dipole Antenna. Post #1555.

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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 podca…

Amateur Radio Bicycle Mobile Setup. Post #1554.

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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.eha…