Re: 4 Metre Converter - but which design?
The layout of that converter looks very, very much like the one in the 4th Edition of the RSGB (first printed 1968, £3.75 !) but someone seems to have gone homebrew. The RSGB circuit uses a 6CW4 RF amp, but downstream of that is an ECC81 then two EF91's.
In fairness to Cinch, the topside of that unit does look like it has been in a 'fairly humid' environment for a wee while!
B
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Last edited by Bazz4CQJ; 2nd Dec 2017 at 5:50 pm.
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