UK Vintage Radio Repair and Restoration Discussion Forum - Trio 9R-59D. Adding a frequency counter?

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MalcolmG4TJK

28th May 2021 8:07 am

Trio 9R-59D. Adding a frequency counter?

Split from this thread:-

https://www.vintage-radio.net/forum/...d.php?t=179987

Has anyone added a digital frequency readout to their 9R-59D? If so do you have a schematic? I have a suitable freq counter (from eBay). I already use a similar counter with my Drake R-4B.
Malcolm
G4TJK

nemo1956

15th Nov 2021 8:08 am

Re: Trio 9R-59D. Adding a frequency counter?

Connect it to the VFO but put in a IF offset.

Andrew2

15th Nov 2021 3:19 pm

Re: Trio 9R-59D. Adding a frequency counter?

Sometimes it's better if you don't know! My 59DS drifted like the Seven Bells of Hades, especially above 7 MHz. You'd get dizzy watching the numbers flying past.

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