Setting the JPC-12 for 80m by adding a 2nd coil, longer whip and shortening the mast
Автор: N4GPA
Загружено: 2025-07-20
Просмотров: 897
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In this video, I show how I added a 2nd loaded coil to my JPC-12 vertical antenna. I replaced the standard whip with a 5.6m *18.4ft) aftermarket whip. The whip was too long and too hard to adjust, so I removed one of the mast poles, which made easier to adjust the coils and the length of the whip. For more information about adapting the JPC-12 for the 80 meter band see • Using Nano VNA Saver software to test SWR ...
While the SWR was lower on the vertical for 80m, I got better QSOs on the end-fed random wire antenna running along my fence. It is 130 fee long with a 9:1 unun at 6 feet off the ground. I was not working DX, I was working the Northern Florida Traffic Net, which was an NVIS target form me.
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