by Michael Martens | May 14, 2012 | Amateur Radio, News
This weekend marks the open of the 2012 Dayton Hamvention. The Hamvention is the world’s largest amateur radio exposition and flea market covering hundreds of acres in and around the six buildings of the Hara Arena in Dayton Ohio. This year’s Hamvention is...
by Michael Martens | May 4, 2012 | Amateur Radio, Antennas, emcomm
A very common question that I receive from people inquiring about my antennas is “Does a J-Pole antenna need to be grounded?” Of course there is a very easy answer: no and yes. J-Pole antennas are half wave antennas by design. Actually they are a half wave...
by Michael Martens | Apr 27, 2012 | Amateur Radio, News
April 27 marks the birthday of Samuel F.B. Morse, the inventor of a single-wire telegraph system and co-creator of Morse Code. Thanks to his efforts, communications systems worldwide increased in speed exponentially. Morse still has a visible mark on today’s...
by Michael Martens | Apr 21, 2012 | Amateur Radio, Antennas, UHF, VHF
Most of the instructions and plans you see online for J-Pole antennas often include the admonition to use a choke balun with the antenna. The purpose of the balun is to limit the amount of RF radiation coming back down the feedline and into the radio. Even though...
by Michael Martens | Apr 18, 2012 | Amateur Radio, News
On April 18, 1925 the International Amateur Radio Union (IARU) was founded. On the 18th of April the founding event is commemorated with the celebration of World Amateur Radio Day. There are over 700,000 ham radio licensees in the USA and about 2 ½ million worldwide....
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