Posts: 16,579
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City: Jackson
State, Province, Country: NJ
Well ... a small diode is inconspicuous, could be easily hidden and allows to keep the tube count which does preserve the authentic look. And with one diode vs many tubes that still leaves it at being a tube radio. 
Speaking of which, a semiconductor detector is as old as the tube one. Actually older. It's just it did not assume the shape of a small diode for a while and was made of lead and sulfur and not Germanium.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
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RE: Ron. cancer post - by morzh - 05-15-2019, 02:18 PM
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Recent Posts
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Philco Model 38-7: what caps & resistors do fail typically?
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| Hello Martin,
Welcome aboard our little community what great Model 38-7
Sincerely Richardradiorich — 12:30 AM |
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Philco Model 38-7: what caps & resistors do fail typically?
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| Welcome to the Phorum Martin.
I count about 9 paper caps, the 3 electrolytic caps and 2-Y2 safety caps to replace th...RodB — 09:44 PM |
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Part numbers to model cross
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| Jim,
We have this index put together by Dale Cook but I don't think that is quite what you are looking for.
The Parts...klondike98 — 09:37 PM |
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Philco Model 38-7: what caps & resistors do fail typically?
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| Yep the dim bulb test is OK but I'd definitely replace all those electrolytics before I did it. Since those #47 conden...klondike98 — 09:18 PM |
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Philco 42-345 Restoration/Repair
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| The resistor is a 2.2 Meg, it was the last one I hadn't replaced. The broadcast is coming in after replacing it.osanders0311 — 09:09 PM |
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Philco 42-345 Restoration/Repair
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| What does the resistor measure? I think it should be 3.3 Meg.
If the oscillator coil has continuity and the resistanc...RodB — 09:03 PM |
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Philco Model 38-7: what caps & resistors do fail typically?
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| Good idea to check the coils... then I'll get hold of an incadescent light bulb and see what happens when the unit is sw...Musaeum — 08:49 PM |
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Philco 42-345 Restoration/Repair
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| I have that same set, ain't too much shortwave I like anyway.....it is a good AM DX set. PaulPaul Philco322 — 08:32 PM |
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Philco Model 38-7: what caps & resistors do fail typically?
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| Welcome to the Phorum, Martin! Open a new thread in Philco Electronic Restoration when you begin working on your 38-7. ...GarySP — 08:28 PM |
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Philco Model 38-7: what caps & resistors do fail typically?
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| Welcome to the Phorum!
:wave:
Here's the schematic for that radio from our digital library:
Something to do bef...klondike98 — 08:05 PM |
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