[Premium-Rx] Racal Preselector

[DANIEL HIGGINS]

Does anyone have the circuit diagram (and possibly the alignment instructions) for a Racal RA177x manually tuned RF preselector module (the one that goes in the left hand slot of the RA177x chassis)?  I have removed one which I would like to build into an external control unit for a Racal RA3702, MA3752 and TA3762 system.

If anyone is interested, I will be able to supply circuit diagrams, PCB artwork and PIC software for the controller which will allow the transmitter to follow either receiver (+/- an offset if required), as well as controlling the transmitter power and mode.

Thanks,

Danny
G3XVR
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