[Elecraft] KPA troubles: the outcome.

[Leo Starrenburg PA5LS]

LS

the replacement U6 arrived today, along with a spare MCU. After placing the
ic on the KPA pcb I followed the alignment procedure and everything turned
out fine. Even the ventilator is behaving again, so there is no need to
replace the MCU. ( If I hadn't orderd it, I probably would have had to
replace it ...)

So now I am the proud owner of a K2 with KAT2 and internal battery, and a
KPA- and KAT100 in an EC2. Happy days indeed !

I did do the "KAT100" modification on the K2 control board ( extra resistor
in the control line ), but I do not have the xx Ohm 3W resistor in the RF
feedline, works ok with the one foot RG58-U coax between the K2 and KPA100.

A last remark: as U6 provides powerlevel feedback to the K2, the lack of it
in my set-up resulted in a 200W+ output, and before I realised what was
going on I went on and did this several times.
So I can safely say that the KPA100 is a very fool-proof and indeed
conservativly rated design (!)

73' Leo PA5LS.