[Johnson] Valiant chirp

Al Parker anchor at ec.rr.com
Tue Dec 4 21:20:12 EST 2007


Hi folks,
    I know Valiants & Rangers chirp at least sometimes.  Mine only chirps on 
40m.  I know the dropping resistor in the VFO VR tube line, 18K I think?, is 
common trouble, I've done that on a cupl, and in this one, tho' I used a 5w 
22k, mounted outside the box.  I've adjusted the keying  pot, even tried it 
at both ends, but it's sitll close to where a prev. owner had marked it to 
be when adj. properly.  I've got some ferrite beads on the leads into the 
VFO.
    This thing only chirps on 40m.  I've tried all other bands, tried 
changing the exciter tuning.  I fussed with this rig for about 2 months b4 I 
decided it was OK to put it back in the cabinet last week.  Worked the 160 
contest this weekend, of course you're not going to get anything other than 
599 in a test, but it sure sounds pretty on the rcvr everywhere except on 
40m  It does flatten out when I cut the final plate current down below 50ma 
by dropping the drive & letting the clamper do it's job.  So, it's either RF 
somehow doing it, or voltage drop, or ???  If that 22k has too much drop, 
why only on 40M?
    Looking for suggestions b4 I haul it out of the cabinet, not a fun job.
thanks, 73,
Al, W8UT
New Bern, NC
www.boatanchors.org
www.hammarlund.info





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