[Premium-Rx] RACAL RA1772 PCB mystery

[David Bobbett]

I am trying to source schematics for a PM453 LF Loop board and a PM454 
Upper Loop board for a friend of mine who is bringing one of these 
receivers back to life. We know that they are respectively equivalent to 
the PM558 and PM559 boards, for which we do have data, but have been 
unable to obtain further information on what appear to earlier versions.

If anyone has schematics and/or layout details for the mystery boards, 
the information would be gratefully received :-)

Thanks in advance, and fingers crossed.


73 de David Bobbett, G4IRQ