K1 PROBLEM SOLVED!!!

classic Classic list List threaded Threaded
1 message Options
Reply | Threaded
Open this post in threaded view
|

K1 PROBLEM SOLVED!!!

Len [K4IWL]
After following up on a hunch, I came to the conclusion that the only thing
it could be was R30 (3.3 ohm from Q6 emitter to ground). This would prevent
Q6 from conducting.

I went to the QRP parts box and found some 2.2 Ohm resistors that I keep to
bias the output transistor on my RockMites. Close enough for government
work! I pulled R30 and tested it with 2 ohmmeters and it showed an open on
both of them. I tack soldered the 2.2 in its place, went into the K1 menu,
set the output to 3.0W, and put it in tune mode.  VOILA! 3.0W showed on the
LCD. IT'S FIXED!

I kept looking at Q6 and all the components over the past few weeks but kept
ignoring R30 because when has a resistor ever been open in a QRP rig? The
only thing I can tell is that it was open when it came out of the box.

Sorry to get eveybody all set to tell me all the things I need to check. It
works! Now I can install the KAT1, KNB, KBT1, and align the 4-band filter
board.

Unless somebody says something different ... I will keep the 2.2 ohm in
place instead of running out to the local electronics store and getting a
3.3 ohm.

73 to all,
N.T. "Len" Carlson, K4IWL
Plano, TX
www.qrz.com/k4iwl

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft   

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com