I've been operating 160M FT8 recently, and am noticing some odd symptoms
from my amp that seem only to occur in FT8 mode. Even running only
about 1170 watts into a good dummy load, with the KPA-1500's ATU
bypassed and a displayed SWR of 1.0:1 during transmit, as soon as the
transmission ends both the display on the amp and the KPA-1500 utility
show SWRs ON RECEIVE of 1.6-1.9:1.
I just tested on 80 meters, and am seeing the same anomaly on FT8. This
does not happen on CW.
The question is, where is this spurious reading coming from, and should
I be concerned?
73, Pete N4ZR
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