Posts: 7,305
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Joined: Dec 2009
City: Roslyn Pa
For a power output tube in a battery set the 19 is hard to beat. In the 30's it was a popular tube to build low power portable battery powered ham transmitters, back then AC current wasn't everywhere yet. Philco used these https://frank.pocnet.net/sheets/201/1/1E7G.pdf but as you can see it's output is much lower.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry
Messages In This Thread
RE: 38, 38 A, 38 B - by Radioroslyn - 06-05-2019, 10:53 AM
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Philco 42-345 Restoration/Repair
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| Please tell me this was it, I replaced resistor 27 and it's playing on the broadcast band. I am afraid to change the ban...osanders0311 — 06:12 PM |
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| I believe there is that document, and I think we might have it in the Library.morzh — 03:29 PM |
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Philco 42-345 Restoration/Repair
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| Ok MrFixr55,
I have tried the DeoxIT D5 on the band switch and even though it has relieved the tension I felt when turn...osanders0311 — 11:11 AM |
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Part numbers to model cross
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| Is there a reference somewhere where you can punch in Philco part numbers and see what models those parts were used in?Jim Dutridge — 10:17 AM |
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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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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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