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RF Ground and Ground Planes: Ham Radio Q & A Episode 4

by Michael Martens | Aug 14, 2015 | Ham Radio Q and A

Ham Radio Q & A is back with another episode. Thank you for all those questions, please keep them coming. IF you’d like your question answered on the show, please drop me an email at kb9vbr@jpole-antenna.com or leave a comment below this post. I try to...

Baluns and RF Chokes: Ham Radio Q & A Episode 3

by Michael Martens | Jul 23, 2015 | Ham Radio Q and A

You’ve heard a lot of people recommend putting a few loops of coax near the feed point of your antenna to keep the RF energy out. How does this work and why is it needed. Watch this episode for more information on common mode currents, baluns, and RF chokes....

RF Energy Safety and Exposure

by Michael Martens | Jun 17, 2012 | 2 meter, Amateur Radio, Antennas, VHF

I love reader questions and I had a great question this past week that I wanted to share with the rest of my readers. I’ve recommended installing antennas in the attic if you don’t have an adequate location outdoors or if you have to deal with homeowners...

How many watts can a J-Pole antenna handle

by Michael Martens | Aug 21, 2011 | Amateur Radio, Antennas, News

A frequent question that is asked about my antennas is how much power can they handle. This is a common concern as there are many different styles and construction methods of J-Pole antennas. Depending on what materials are used to build your antenna, its power rating...

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