Hello All,
I hope that someone can suggest where to start tracing down a
rather strange tuning problem that cropped up in the middle of working
the IARU on Saturday. The short description is that the K2/100-KAT100
stopped tuning in AUTO mode when in high power mode on 40 meters. Here's
Bob,
There is nothing unique to 40 meters in the KAT100, *but*.
Behavior like that *could* be related to a parasitic oscillation in the
KPA100. The parasitic usually revealed itself during a TUNE operation
with the KAT100 also installed.
The KPA100 T/R switch was re-designed to address
: [Elecraft] K2/100, KAT100 strange tuning problem
Bob,
There is nothing unique to 40 meters in the KAT100, *but*.
Behavior like that *could* be related to a parasitic oscillation in the
KPA100. The parasitic usually revealed itself during a TUNE operation
with the KAT100 also installed
Bob,
Since you do have early updated version of the KPA100 - there is one
thing yet to check, and that is the value of C31. If it is not a .22 uf
capacitor, it should be changed to the new value. Elecraft will supply
one if you ask - the part number is E530295.
The capacitor situation was
(Bob)
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K2/100, KAT100 strange tuning problem
Bob,
Since you do have early updated version of the KPA100 - there is one
thing yet to check, and that is the value of C31. If it is not a .22 uf
capacitor, it should be changed to the new value
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