[Elecraft] K3S High Current in 6 metre mode

raycollins ray at collins05.plus.com
Thu Apr 30 16:19:13 EDT 2020


I have just tried 6 metre USB operation for the first time on my K3S and I
notice that as soon as I key the transceiver (without speaking into the
microphone), the transceiver draws a quiescent current of 18 Amps with a
power meter indication of zero.  When I speak into the microphone, the
current reduces as the speech level increases and the power meter display
seems to give a sensible indication.

If I reduce the power setting to below 10 Watts and then key the
transceiver, the quiescent current drops to about 3 Amps.

These standing currents seem very high; is this to be expected?  Almost
looks like the power amp is Class A biased?  Can anybody please explain what
is happening?

Ray M1FJL



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