I had the same problem with a T4XB awhile back. The problem was a dirty wiper
of the XTALS switch. Cleaned with DEOXIT and all was well.
73, Stew K3ND
________________________________
From: Steve Wedge <[email protected]>
To: Peter Ravn <[email protected]>; [email protected]
Sent: Monday, August 26, 2013 10:36 AM
Subject: Re: [Drakelist] T4XB tune problem
Peter, you are probably outputting the IF frequency 5645
kHz (the carrier oscillator). That explains the strange setting of
the RF TUNE and the high SWR on an 80m antenna. It could be that your band
oscillator is not working. Do you get normal output on other
bands?
Steve Wedge, W1ES/4
Time flies like an arrow; fruit flies like a
banana.
All my computers have my signature with various
pearls of wisdom appended thereto.
From: Peter Ravn
Sent: Sunday, August 25, 2013 12:49 PM
To: [email protected]
Subject: [Drakelist] T4XB tune problem
When my T4XB is in tune mode, and the gain
control is fully CCW, the meter reads 0.4 A. Turning the gain control CW has no
effect on the reading.
The RF control is also out of control. When
I want maximum peak on 40 meters, the RF control has to be turned to 80 meters.
Output is app. 40 W and SWR is very bad. The plate control can be dipped but
ends in a completely other position than the usual one.
The problem is the same in SSB and CW, and
when the T4XB runs as a separate transmitter.
The bias is 0.07A.
Any help will be
appreciated.
Thanks.
OZ8CTH, Peter
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