Well I have a K3/10 and KXPA100 with fw vers 5.60 (yeah I need to update).

K3/10 gets 10w on 14-MHz and 8w on 50-MHz. KXPA gives 100w on 14-MHz and 80w on 50-MHz using a Bird43 meter with a Bird dummy load. Into an antenna power is dependent on match (as one would expect). The KXPA only needs about 5.6w drive for full output on 14-MHz but requires full 8w drive on 50-MHz. Overdriving causes the 3-dB attenuator to switch on.

73, Ed - KL7UW
  http://www.kl7uw.com
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