Atwater Kent Radio model 487, 1936

Ed Bell is a very well known Antique Radio Collector. The radio is an Atwater Kent 487, 1936.

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Science & Technology

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• radio
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• Atwater
• Kent
• 487
• 1936.
• Ed
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• very
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• Antique
• Radio
• Collector.
• electronics

[Lockemeister]

nice collection and nice AK

[AllAmericanFiveRadio]

Ed thanks you.

[crazyscientist]

wow...

[AllAmericanFiveRadio]

lol, Thanks!

[OlegKostoglatov]

What is the second window for below the dial, is that a shadowgraph tuning indicator?

[AllAmericanFiveRadio]

Yes, I did a quit video on it, it is one of the Responses WiringDiagram

[chbitter]

@OlegKostoglatov the DC in Germany dates back from the early installations I believe mid 1880s,I believe it was on of Thomas Edison companies the firs AC power plants came sometime in the 1890s

AC was preferred because it can be better carried long distance, as far as I know Frankfurt was the last city to maintain DC until shortly after WW2

[OlegKostoglatov]

110 volt D.C mains was used in some urban areas in North America as well, over time they were also phased out and replaced with 120 volt 60 cycle AC. The areas that used DC were places where the original equipment was installed by Thomas Edison, or one of his offshoot companies, near the beginning of the last century. If DC mains were also used in Germany perhaps one of his companies, or a German division, made the original installation?

[OlegKostoglatov]

I haven't encountered a situation where a 25 cycle radio needed any modification to operate at 60 cycle. Most 25 cycle sets had transformers rated to take both 25 and 60 cycle, in fact at modern line voltages having a 25 cycle transformer is somewhat of an advantage since it has a larger iron core that takes longer to reach saturation. Interesting, I did not know that parts of Germany also used 110 volt DC power, were they earlier installations by any chance?

[chbitter]

25 Hz thats a really low frequency, I suppose it is possible to run 25 Hz radios on 60 Hz after some modification perhaps a diverend capacitor maybe rectifier ??, a view places in Germany shortly on till after WW2 we used to have 110v DC

[OlegKostoglatov]

It's supposed to be 120V, 60 cycles, sometimes it runs higher or a bit lower at different times of the day at different times of the year. Some older sets, particularly in Canada, were build for 115 volts, 25 cycles. 25 cycle power was popular for industrial plants and mines at one time so it was also used for domestic use. During the later half of the 1950s most of the 25 cycle grids were converted over to 60 cycle mains.