Posts: 816
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Joined: Mar 2014
City: Louisville, KY
"Imho I think if was building these batteries I'd use aa cells for the bias volts as the current is very low. 9v batteries for the hv is going to be short lived and using two D cell two supply the filament voltage is going to be very short lived. Granted he didn't have the set to try it out on (customer had it). "
Yes Terry....if I had to set out to build one of these myself, the first motivation I'd apply , was to use as large a battery as I could, to add up to the proper voltages, all the while, bearing in mind the constraints of the size of the radio. I see that that BC battery is quite large.
Do I understand correctly that they still set inside the cathedrals, on a shelf above the chassis?
Messages In This Thread
RE: 38, 38 A, 38 B - by Jake Blake - 06-05-2019, 01:11 PM
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Recent Posts
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Part numbers to model cross
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I looked thru the documents and did not see one. Might have missed it though.Jim Dutridge — 07:16 PM |
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 |
Philco 42-345 Restoration/Repair
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So far still no broadcast, I am posting pictures of #14 Oscillator and also a resistor #27 which connects to an XXL tube...osanders0311 — 04:02 PM |
Part numbers to model cross
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I believe there is that document, and I think we might have it in the Library.morzh — 03:29 PM |
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 |
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 |
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 |
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 |
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 |
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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