[R-390] Crystal calibrator issues on some bands

[John KA1XC]

Adam,
you can be rest assured that if your 100 kc calibrator is  working at all,
then it is supplying calibration harmonics to all the bands, including the
ones that are giving you difficulty.

So that means something is up with the 16-32 MC slug rack or RF coils. If
some of these bands work and the others don't, most likely you have a
mechanical or electrical alignment problem. Take a look at the slug rack
while you're tuning or changing bands and make sure it isn't hanging up
somewhere.

Did the 16-24 MC bands ever work? Can you hear any signals?
Also, try turning on the BFO and crank the gain all the way up and give
another listen for the calibrator signals; they may be there, just very
weak. This should help get you pointed in the right direction.

John


----- Original Message ----- 
From: <AdamAnt316@aol.com>
To: <r-390@mailman.qth.net>
Sent: Thursday, July 24, 2003 1:34 PM
Subject: [R-390] Crystal calibrator issues on some bands


> Hello everyone. Today, I attempted to calibrate my 390A while listening to
16M, but discovered that I wasn't getting any 100KC markers on the 17MC
band. I then decided to see if any other bands weren't getting the markers,
and discovered that bands 16 through 24 do not seem to have the calibration
points, while at least most of the other bands do have them. What could be
causing this, and how hard is it to find the required parts? TIA.
> -Adam
>
> Adam Vaughn
> Collector of old computers, video game systems, radios and other
electronic equipment...
> Visit my page at
> http://www.angelfire.com/ma2/AdamVon/index.html
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