It could be a momentary high SWR when starting a transmission because of
some slow switching somewhere in line. In K3 Config, try increasing the
value of Tx Dly. I have to set mine at 14 because of a slow amp.
Dave Hachadorian, K6LL
Yuma, AZ
On 12/30/2022 8:34 AM, Bill Coleman via Elecraft wrote:
I own two K3/100 radios. One is SN70xx, another SN87xx. On one of them, I
observe an odd behavior with transmit power output.
Even though I have an antenna matched to nearly 1:1 VSWR using the internal
tuner, any time I change bands, or adjust the power level, SN70XX does not put
out full power right away. Instead, it starts about 40-50 watts, and then
slowly creeps up to 100 watts. This takes about 4-6 15 second FT8 transmissions.
It doesn’t appear to behave this way on CW or SSB. Only on TX DATA modes.
My other radio doesn’t exhibit this behavior.
The two radios have different internal options, but many of the configuration
parameters are the same.
Any suggestions?
Bill Coleman, AA4LR, PP-ASEL Mail:[email protected]
Quote: "We invented personal computing."
-- Bill Gates @ TechNet / MSDN 2003
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