[Milsurplus] Service Manual for a Plessey PTR 175 Transceiver

[gm0kzx at blueyonder.co.uk]

Dear Group

I wonder if any one of your readers can point me in the right direction to
get a copy of the service manual or the Electronic Schematic of the
Plessey PTR175 transceiver. These were used in the British Vulcan bomber
and I believe that they were very similar to the Collins ACR52 but
differed in frequency coverage.
Thanking you
Regards
Barrie P Spink  GM0KZX