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resuscitating 60+ year old radio
resuscitating 60+ year old radio
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Old 24th March 2004, 05:24 PM   #11
ultrachrome is offline ultrachrome  United States
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Join Date: Jan 2002
Location: Puget Sound
Yeah, some of those capacitors look like they are brand new. The radio is a time capsule of sorts and I almost don't want to change anything about it.

Are the resistor markings the same used today? They look hand painted. I'm not sure if I could reliably discover their original values without a schematic.

If I need to restore to working condition, I'll take my time. It would be an extremely ambitious project for me.

What types of broadcasts can I find on shortwave? Is there anything good on AM anymore?
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Old 25th March 2004, 11:24 PM   #12
richwalters is offline richwalters
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Location: Schwartzwald
I fell into this trap sometime ago of fusing the neibourhood supply .....You haven't mentioned about......make dammned sure one side of the mains isn't connected to the chassis......aahhh.. and don't plonk a scope earth on it when it's switched on......this B+ technique was a pretty common development using simple half wave rectifier and series dropper for the high voltage heater chain.
You might have an LS chassis with energised electromagnet as hum buck........part of the B+ smoothing circuit..... in otherwords it's alive.........and kicking....

Use isolating tranny! please

......All this makes modern stuff a breeze......

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Old 26th March 2004, 08:55 AM   #13
planet10 is offline planet10  Canada
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resuscitating 60+ year old radio
Is there a number on the field-coil speaker?

community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
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Old 26th March 2004, 12:39 PM   #14
dhaen is offline dhaen  Europe
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Are the resistor markings the same used today?
Probably not. They used to use "Body - Tip - Spot" in place of First, Second, and Third rings. See this vintage site for details. All resistors were 20% (or worse).
Haven't looked at SW for years!
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