I have been following this thread with great interest.
I have a QRP K2 and would like to add an amplifier. I love the integration of
the KPA100 and KAT100 but would like more power and no fan.
I would like 400 watts output, QSK without relays and no fan.
The KPA800 seems interesting, but has
Many of us place a small muffin fan on top of the K2 heatsink. I have my
muffin fan housed in a small plywood box (blowing down at the fins) with a
resistor in series with the fan so that it turns fairly slowly and makes no
noise at all. With this auxillary cooling the noisy little fan in the
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