Model 650 Tone Control Question
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Joined: Nov 2021
City: Toronto
State, Province, Country: Ontario
http://www.nostalgiaair.org/Resources/824/M0013824.htm
I was looking at the tube voltages from the Nostalgiaair site for the Model 650 and I was under the impression that both 42 output tubes were to have the same voltages but this showed only one 42 output tube.
Should both 42 output tubes have the same plate and screen voltages?
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RE: Model 650 Tone Control Question - by Hamilton - 07-07-2023, 02:59 PM
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Hi OSanders,
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I think that RCA and GE introduced metal tubes in the USA in 1936. I don't know if they were being made by RCA, GE or b...MrFixr55 — 11:20 PM |
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Vlad95,
Thank you for the stringing guides and wow there are so manyosanders0311 — 06:01 PM |
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A pre war Hallicrafters, and an early one too, very nice! 1936 is pretty early for metal tubes too, which would explain ...Arran — 05:58 PM |
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Thanks Rod,
"When you hear the background hiss and no station it usually indicates that the oscillator quit" ...osanders0311 — 05:52 PM |
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RodB
:beerchug:Vlad95 — 10:22 AM |
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Vlad, you nailed it. Swiss and German roots.RodB — 09:54 AM |
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Well this is a Hallicrafters SX/9 circa 1936.
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By the way.
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Take a look here: Dial cord stringing Guides
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