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 Post subject: HALLICRAFTERS SX-110 alignment question
PostPosted: May Fri 14, 2021 3:49 am 
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Joined: Mar Wed 27, 2019 1:56 am
Posts: 305
Location: Mountainside, NJ
What is Adjust Pitch for a 400 - 1000 cycle note??? Can this be seen/ observed in any way?
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 Post subject: Re: HALLICRAFTERS SX-110 alignment question
PostPosted: May Fri 14, 2021 4:24 am 
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Joined: Jan Tue 10, 2012 8:39 am
Posts: 2518
The BFO pitch control.


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 Post subject: Re: HALLICRAFTERS SX-110 alignment question
PostPosted: May Fri 14, 2021 5:56 am 
Member

Joined: May Thu 17, 2018 12:16 am
Posts: 150
Location: Edmonds, WA USA
Set the BFO pitch control for a pleasing audio tone from the speaker. C above Middle C sounds nice and is 440 Hz. Any pleasant tone to you is ok. It it just provides a tone so you can measure output at the speaker terminals if that how the earlier instructions say how to set up your test gear. My HRO-60 and Hammarlund HQ-120X use the same technique. It was an easy way to measure gain in the old days using the BFO tp generate a tone from the unmodulated carrier from the signal generator. It still works fine today. As the IF gain changes as you alighn so does the tone amplitude.

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Dave
W7VM

Real Radios Glow in the Dark


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 Post subject: Re: HALLICRAFTERS SX-110 alignment question
PostPosted: May Fri 14, 2021 3:26 pm 
Member

Joined: Mar Wed 27, 2019 1:56 am
Posts: 305
Location: Mountainside, NJ
Thanks Dave that’s what I thought but sometimes the obvious is devious In this case not so.


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