[Elecraft] K2 / KPA ALC problem. *** Solved ***

Chris Kimball mail at cvkimball.com
Sat Dec 14 20:45:09 EST 2013


I added 19.5 ft of RG-58 coax formed into a 6 inch diameter coil between the
rig and the LDG 1:1 balun.  Meter results on ALC or RF for the dummy load
and for the antenna are now the same.

Steps to the solution:

1. Get the transmitting BFO aligned with the built-in SSB filter in R and
R-reversed modes.

2. Fix the R98 gain problems with the standard mod .

3. Added 0.01 uf capacitor on the VRFDET line in the shell of the connector
between the K2 and the KPA/KAT.

4. Changed the RF path length from the K2 to the balun, providing a choke
balun at the same time.

Thanks to all that assisted in this venture!

Chris
NQ8Z



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