[Hallicrafters] SX-101A RF Calibration Question

[Edward B Richards]

Mark;

You can use a unmodulated carrier for alignment by watching the AGC
voltage or the S meter. Use the smalleast signal that gives an
indication.

73, Ed Richards K6UUZ
Simi Valley, Ca 93065
Home of the Air Force 1 pavilion

On Sat, 31 Dec 2005 00:49:41 -0500 Mark K3MSB <mark.k3msb at gmail.com>
writes:
> I've been using my 101A as a daily driver for over 5 years now and 
> it
> works superbly except on the high end of 40 meters.   7.3 MHz 
> appears
> on the dial scale around 7.313 or so.
> 
> I don't do a lot of 40M AM and when I do, I just do a mental offset 
> to
> get the correct frequency.  This is getting a bit annoying so I
> thought I'd do a quick RF alignment on 40M only to bring the high 
> end
> back down.
> 
> Looking at the manual, it says the adjustment caps are soldered at 
> the
> factory and recalibration should be performed via the coil slugs 
> only.
>   For 7.3 Mhz, that's L8.
> 
> OK, that's what the manual says so that's what I'll do,  but I'm
> typically used to setting the lower frequency via a slug then 
> setting
> the bandwidth of the dial scale via a trimmer.   I just want to 
> make
> sure I'm doing the correct procedure for what I want to accomplish;  
> I
> can't see any other in the manual.
> 
> I don't think the modulated output is working on my RF generator, so 
> I
> was just planning to use my SWR analyzer link coupled to the radio 
> for
> this adjustment.  It doesn't have to be exact,  but I want it 
> better
> than what it is now.     I'll do the full (and correct) alignment 
> (IF
> and RF) next summer when I recap the radio.
> 
> Thanks
> Mark K3MSB
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