[Hammarlund] HQ-129x - Xtal Calibrator Puzzlement

[Barry H]

-- Edward B Richards <zuu6k at juno.com> wrote:
Hi Ed

Nope -- The HQ-129X has a 3-position function switch -- "Man, AVC, BFO".  No extra position on this one.

I had also checked for a pot changed out with a push-pull switch -- no dice.  

Thanks anyhow ...
Barry




I installed a calibrator in a HQ-100A once and changed the function
switch from a 4 position switch to a 5 position switch. The fifth
position turning on the calibrator. Give it a try.

73, Ed K6UUZ

On Wed, 28 Sep 2005 23:38:20 GMT "Barry H" <barry_hauser at juno.com>
writes:
> 
> 
> Just got another HQ-129X.  I think this is my third or fourth -- 
> lost count.
> 
> Amazingly it arrived in working condition -- defying the crummy 
> packing job.  Fortunately a short trip and no apparent bounces.
> 
> This one's all original except for two things.  Someone replaced the 
> original somewhat anemic tuning knobs with somewhat less impressive 
> TV push-ons.  Not a purist, but I'll be looking for somewhat better 
> replacements.
> 
> Here's the puzzle.  A previous owner added one of those small 
> aftermarket crystal calibrators -- very neat job in the left rear 
> corner.  It uses a 6AU6 and a 100 kHz xtal.  The tube is lit.
> 
> I can't find a switch anywhere, and all the original switches seem 
> to operate as expected.  (Thought maybe the send-receive was 
> re-wired to turn on the calibrator or limiter or something -- not 
> apparently so.)
> 
> Anyone have any ideas?  Yeah, I know, I could pull the chassis and 
> take a peek -- trace the wiring -- but that would be cheating.
> 
> Also checked for any pots that might have been replaced with one 
> with a built-in push-pull switch.  Nope.
> 
> Standing by.
> Barry
> 
> 
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