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Author Topic: Wanted VFO for Central Electronics 20A  (Read 1763 times)
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wa2tak
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« on: December 15, 2022, 09:41:04 AM »

I need one to continue my work on mine.

VFO output needs to be from 5000Kc to 5500kc.
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wa2tak
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« Reply #1 on: December 19, 2022, 12:37:54 PM »

Welllllllllllll....

For those of you interested...I've found three 5Mhz vfo schmatics:

QST Dec 1985 p 39
73 Mag Jan 1977 p116
Ham Radio Mag 1972 p27

It appears that they all output LOW RF VOLTAGES.

And, as I "understand" it...the 20A 'wants' 9 v Pk-Pk.

Now...as these are 'vintage' units...I'd THINK that they'd work on vintage xmtr's.

"What to do"?
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wa2tak
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« Reply #2 on: December 19, 2022, 12:49:33 PM »

PS

Here are the links to the vfo's

https://worldradiohistory.com/Archive-DX/QST/80s/QST-1985-12.pdf

https://worldradiohistory.com/Archive-DX/73-magazine/73-magazine-1977/73-magazine-01-january-1977.pdf

https://worldradiohistory.com/Archive-DX/Ham%20Radio/70s/Ham-Radio-197201.pdf
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