Keep in mine that if you're using a wire
antenna that is not solidly secured and susceptible to doing a jig
when the wind blows, your SWR is going to be all over the place
regardless of how good a tuner you have.? My OCFD is suspended
between two trees and can jump around as much as 5-feet from its
normal suspension height.? This in spite of having a heavy balun
at the feed-point and LMR-400 feed-line.? The wind can really make
the antenna dance.? This will clearly impact SWR, and LDMOS amps
protect themselves by going into Bypass mode at a much lower SWR
than other amps.? At 100 watts, varying SWR is less of a problem
(and often not noticeable).
I hope to solve the swaying tree problem in the next week or so
with three 50-foot well-guyed masts resting in 4-inch PVC pipes
anchored in five-feet of concrete.
We'll see.
73,
Kent? K9ZTV
On 5/30/2020 12:38 PM, Barry wrote:
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Rich,
interesting to see others having same issues as i am. Just
operating in the cqwpx cw contest this weekend and mines doing it
randomly on CW. Its a real pain to be baby sitting this amp. I may
sell it. I feel like somethings not right with this amp. Im not
sure i wanna call Palstar anymore. And i thought i had it Fully
corrected With going direct mode, forget normal mode, its worse
there. Contesting to me is a true test of performance and this amp
seems lacking in quite a few ways. Maybe we can chat further on
this, but its definitely troublesome. Even on a dummy load.?
