Posts: 53
Threads: 7
Joined: Nov 2020
City: KINGS MILLS
State, Province, Country: OH
I'm working on a 37-610 and it has a 5Y4G rectifier and the schematic shows that as well.
Its compliment is 5Y3G, 6A8G, 6K7G, 6Q7G and 6F6G.
But other general 610 drawings have the older tube set starting with the 80 rectifier.
I suggest comparing the whole set of tubes as manufacturers don't wait till end of year to put changes into place. Looking at the set as a whole might help match drawings closer.
But try to put the tube that was intended for the set in place - this can take a little detective work.
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Recent Posts
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Philco 42-345 Restoration/Repair
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| Hi OSanders,
Look carefully at the band switch. Turn it slowly and "wiggle" it around the desired band. ...MrFixr55 — 12:33 AM |
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5U4 vs 5Z4 tubes
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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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Philco 42-345 Restoration/Repair
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| Vlad95,
Thank you for the stringing guides and wow there are so manyosanders0311 — 06:01 PM |
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5U4 vs 5Z4 tubes
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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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Philco 42-345 Restoration/Repair
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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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Philco 42-345 Restoration/Repair
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| RodB
:beerchug:Vlad95 — 10:22 AM |
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Philco 42-345 Restoration/Repair
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| Vlad, you nailed it. Swiss and German roots.RodB — 09:54 AM |
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5U4 vs 5Z4 tubes
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| Well this is a Hallicrafters SX/9 circa 1936.
No real issues so far although I dodged a real bullet with a cap that was...bridkarl — 07:59 AM |
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5U4 vs 5Z4 tubes
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| The pinout is the same but the 5U4 has a 3 amp filament, verses 2 amps or less on the 5Z4. I think that the pinout of a ...Arran — 12:04 AM |
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Philco 42-345 Restoration/Repair
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| By the way.
osanders0311
Take a look here: Dial cord stringing Guides
May be here you can fount correct string settin...Vlad95 — 11:15 PM |
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