[Hallicrafters] S-40a alignment

[Glen Zook]

With a couple of exceptions, the Hallicrafters S and
SX series are calibrated with the bandspread capacitor
fully open.

Glen, K9STH


--- Dale Saukerson <dsaukers at comcast.net> wrote:

> Hello.
> Having dial tracking issues when aligning the set.
> Concentration on band 1 for now.
> 
> Steps 1-2, I.F. peaked great.
> Skipped steps 3-5 for now. (bands 2-4)
> 
> Step 4:
> If I set dial calibration with bandspread at zero
> (fully closed), per 
> instructions, I have too much spread on the main
> dial and can't get 
> accurate readout (freq reads higher than actual at
> 1500khz end). No 
> amount of tweaking caps 22, 4, 15, and 25 will get
> me accurate 
> spread. I can have accurate readout at only one end
> of the dial.
> 
> If I set dial calibration with bandspread at 100
> instead (fully 
> open), I get proper spread and accurate readout.
> 
> Any ideas?
> 
> Looking for confirmation on the following:
> 
> Do I index the bandspread at 0 or 100 ?
> Closed or open?
> Rotate bandspread knob clockwise, dial spins
> clockwise, and dial 
> numbers get smaller?
> Bandspread, rotated fully clockwise, cap is fully
> meshed, dial is at zero?
>
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Glen, K9STH

Website:  http://k9sth.com

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