[Elecraft] Erratic Tuning KAT100 and rerouting cables.

Steve & Anne Ray Steve & Anne Ray" <[email protected]
Sun Feb 2 12:54:01 2003


I finished up my KAT100 Friday night, 31 Jan, and it is working great on all
bands.  I discovered however that on 17 meters the tuning was erratic and it
seemed to lock up.  I had not installed the bypass cap on pin 7 of the
interface cable where it plugged into the K2.  This condition even existed
in QRP down to about 2 watts.  Yet, it did not exist on any other bands in
either the QRP or QRO mode.  It also existed when I fed the rig into a 50
ohm dummy load.  I found that the rf cable between my K2 and the Amp and
tuner which are in a EC2 case were quite close together.  I rerouted the rf
cable and solved the problem.  This morning I bypassed pin 7 of the
interface cable and completely solved the problem.  So if you are having
some strange conditions, rather then disconnecting the pin 7 to see if it
cures the problem, try rerouting the cables.  If it does then put the bypass
cap in.

I am really enjoying the KPA100 and the KAT100 in the EC2 case, it makes a
nice combination and getting excellent reports.

Steve Ray K4JPN ex K1VKW
EM82ep Warner Robins GA
Elecraft K2 1422 & KPA-100
Heath Fan HW-101, HW-8