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ft-991 VHF antenna SWR

Aug 24th 2016, 03:38

ke8byu

Joined: Mar 8th 2016, 04:08
Total Topics: 0
Total Posts: 0
I attached a dual-band whip antenna to the VHF/UHF output of my ft991. I stripped off the tip and monkeyed with it to make an exclusive 2m antenna since that is what I use...Great SWR (1:1.2). Then I see a bad SWR next time (1:2.5). Then back again. I should have known this but ground plane effect on any antenna is important. When I keyed up on my stock mic and leaned to the left, scored low SWR. Next time I settle back in my chair, it runs up to over 1:2.5. Maybe I should affix a large alligator clip to the base of my antenna and solder a wire.

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