[murphyv310]

The first Quasi synchronous detector I came across was in 1970 in the professional UHF TV tuner used by British Relay in their line system, it was a Murphy product type MR756, it was a discreet type with a complex detector incorporating about 20 transistors, I now have only vague memories of the circuit but would like to obtain a manual again to remind me of this excellent tuner.