GE Clock Radio Model 660 - Videokarma.org TV - Video - Vintage Television & Radio Forums

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GE Clock Radio Model 660

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01-23-2017, 06:48 AM

Electronic M Electronic M is offline

M is for Memory

Join Date: Jan 2011

Location: Pewaukee/Delafield Wi

Posts: 15,473

On battery radios that have a single filament instead of a separate heater and cathode any hum on the filament is much more strongly coupled than conventional AC type tubes...As far as battery radio AC adapters go this is reasonably normal for the time...Granted many makers would cheap out and derive the A supply from a voltage divider on the B.

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