Re: Common Pye PF1 RX deafness problem
My 10.7MHz "squawker" was made by using the second-conversion xtal-osc from a water-damaged Pye Westminster [early-1970s cars were notorious for water getting past the door/window seals and someone had installed a Wessie in a Mk.3 Cortina on precisely the place to catch the drips...]
The Wessie 2nd conversion oscillator is on 10.245 or 11.155MHz according to intended frequency-coverage: you wouldn't want a 'birdie' from inside the radio landing on a frequency you were trying to receive].
"Storno" FM two-way gear at the time often used a crystal-discriminator involving a 10.7MHz crystal - so a dead [who killed it by reversing the polarity?] Storno radio yielded up its quartz to be fitted to the Wessie oscillator-board.
My "squawker" was built into one of the 2-outlet bakelite boxes designed for mains sockets. Because I was dealing with quite a few AM radios at the time I included a modulation facility [OC72 transistor and R-C phase-shift oscillator] .
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