Archive for the ‘Antique’ Category:

2019-09-09 Zenith Royal 475 Information

more text below Zenith Royal 475 ARF project & service info links: The Zenith factory schematic and PCB layout is located on page 185 of the Beitmans service literature which is freely available on-line: ** also posted to FB group vintage transistor radios Usually the capacitors are the problem. There are

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2019-05-19 No Go Showboat

from FB group regenerative receiver initiative May 22 Henrik Stenstrom I would like to build something hollow state with all sorts of gizmos like in this photo, but all of it would be a no-go showboat, just for looks. I would put Amber or orange LEDs under the tubes to make them look like they’re

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2019-04-25 Philco History

from FB group Vintage Transistor Radios April 26 I was always curious why Philips didn’t use their brand name in the US. Now I know. From “The company (as well as the Sylvania brand name) was acquired from GTE by Philips in 1981 so that Philips could gain the rights to use its trademark

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2019-04-06 HP Transmission Test Set

from FB group Bell Telephone of… Apr 6 (I bought a transmission test set, TTS-4, photo at bottom.) Glenn Peters We had a HP 493something transmission test set for testing up to 56 kb/s lines. I remember seeing the symbols on the green screen, like a carriage return would look like a little ‘CR’. The

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from FB group Vintage transistor Radios April 3 Are all ‘polyvaricon’ tuning capacitors the same? They’re all about the same size. Charles Vesser Japan Industry Standard… The few that I have examined were 140 pF antenna and about 70 pF oscillator. In parallel give 210 pF. They’re probably made to match up with the loopstick

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2018-10-18 Admirable Admiral Radio

from FB group Vintage Transistor Radios 2018-10-20 Was it made in the late ’50s? The transistors are early RCA types. These old time radios are about 60 years old and I am amazed and inspired to hear and see that, once the caps have been replaced, they perform as well as the day they were

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