Just finished up the KFL1-2 band board for my K1, selected bands 80 and 15 meters.
Base Line Info:
TX - Elecraft K1 serial 3052
Ant Tuner - No installed
Power supply - 13vdc
Dummy Load - Elecraft DL-1 - all measurements taken with this as load
Power Meter - Oak Hills Research (OHR) LM-2 0-10 watt reading unit
New KF1-2 board build, for 80 and 15 meters.
80 meters power output is fine, in fact it reads nearly 9 watts on the OHR LM-2 power meter.
15 meters is a different story, the most I can get it out of it is just over 1 watt, running off a 13vdc power supply.
I have another K1 unit here, switched the board into that, was able to get the 9 watts on 80 meters, and a solid 4 watts on 15 meters.
The only difference I can see between these two sets is that the K1 which has low output on 15 meters has the modification of a
capacitor for use on 80 meters - this is a Elecraft mod.
I checked and double checked coil winding counts and component values on the KFL1-2 board, all appear good.
Summary and Question
Since it does not bother in the other K1, have to assume it's something with my K1.
Suggestions on where to start?