Pete,
That is normally called 'power hunting'. Its usual cause is not driving
the K3 audio to an adequate level. You should have 4 bars solid on the
ALC bargraph with the 5th bar flickering.
73,
Don W3FPR
On 7/26/2024 5:21 PM, Pete Smith N4ZR wrote:
I wonder if anyone else has seen this? when I transmit on 30M, I turn
my K-3's power down so as to only put out 200 watts. Each time I
transmit (on FT8), the amp's output power starts quite low, rises
second by second to around 270 watts and then drops back to the
desired 200 watts (+/-). Later in the same operating session, output
power from the KPA-1500 varies between 175 and 225 watts three or four
times during a single transmission.
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