[Elecraft] KUSB2 Problem Continued

[Gareth - M5KVK]

K2 S/N 03885

Symptoms: low power and no ALC action when on SSB.

CW
With E= 13.0V on the K2 display, if I transmit CW into a dummy load PWR=10
gets me 10W according to my un-calibrated power meter and draws 2.3A (40m).

SSB
If I inject 1kHz sinewave into the Mic socket, for 100mV pp i/p I see about
6W out. Current varies between 1.9 and 2.2A and E comes down to 12.5 under
load.

Interestingly, there's zero action on the bargraph in ALC mode.

Needing 100mV to get 60% of set power seems high. I thought I should get
100% with 50mV. Even with 1.6V pp i/p, I only see 8W o/p

73 Gareth