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Re: Sbitx high swr on a 1 to 1 antenna

 

I would begin by checking? the antenna connection solder connections with both a magnifying glass and ohm meter. Compare with the schematic and check for faulty cracked connections or parts. If the solder is not shiny, but is dull, it is suspect. Check each band transmitting into a 50 ohm dummy load. If some bands are okay, with others not, you can narrow things down.


On Thu, May 15, 2025, 1:34 PM W1WCI via <timothy.macdonald=[email protected]> wrote:
Just substituted my uBitX for the Sbitx, worked perfectly, both radio and the out board meter showing power and 1:1 match with the antenna. ?

The Sbitx still shows high swr on the radio and the meter.

This suggests to me that the issue is to be solved in the radio.

Sent from me and my iPad

On May 15, 2025, at 12:53?PM, Jim via <jlckansas=[email protected]> wrote:

?
How dry is it?? ?Could some moisture got into someplace from radio to antenna?
Has anything been undone before this happened or the coax itself been flexed too much?
Have you ran a continuity check for different parts that go from the simple on place on up to the whole as much as possible?
Does you antenna switch get used often? it might be wearing a bit.
?
Thank you
Jim
KE0VVU
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