[Elecraft] K2 + KSB2 Power Problems

Tue Jul 8 20:01:09 2003

I would carefully check out D1 and D6-D13 and particularly their
connections and orientation.  Also, I would check Q3.

Bruce - W8FU

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Brian Wruble
Sent: Sunday, July 06, 2003 5:34 PM
To: 'Elecraft Reflector'
Subject: [Elecraft] K2 + KSB2 Power Problems

Hi all:  I received no responses, so I am trying again.  I have mated K2
S/N 2528 to the KSB2.  I had several successful SSB QSOs today, and
received excellent audio reports, as long as I didn't use too much
processor.  I was measuring output power of about 10-12 watts on voice
peaks, on both 75m and 40m.  Receiver showed greater sensitivity than my
IC-756PRO II in side-by-side tests --- quite remarkably so!

Now the bad news.  On CW, I can't get more than about 1-1.5 watts
output, a little more on the low bands, and progressively less as I go
higher towards 10M. 

I then removed the KSB2, replaced jumpers W2 and W3, replaced C167, and
tried CW.  I get full power, 10W + measured output on all bands, again a
little more on 80/160 and a little less on 12/10.  

Any thoughts on what in the KSB2 could be causing the low power problem
on CW while not causing a problem on SSB would be GRATEFULLY welcomed.  

73 de Brian W3BW

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