Re: GEC BRT402D Receiver.
I have an RC410R here, awaiting restoration, along with the full service manual down to component level.
It looks a bit of a nightmare (which is why it's still awaiting) and has one badly warped Paxolin PCB in the synthesiser. It was working 17 years ago...
The tuning is mechanical, with a servomotor controlled by a phase locked loop system and a varicap for fine tuning.
The 4-gang tuning box has the ranges selected by a Ledex turning a set of wafer switches. Plenty of noisy clunking going on there as of course it only turns in one direction!
Last edited by m0cemdave; 29th Apr 2017 at 4:08 pm.
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