Quote:
Originally Posted by Electronic M
Neat to get a look inside that.
That adjustment is NOT a pot, it is a ferrite tuned inductor or transformer. It likely tunes the frequency of the modulator, or some filtering for the system. I agree, you don't want to mess with it casually.
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The saw resonator sets the Output frequency - the adjustable coil sets the Audio modulation center frequency, for the 4.5MHz offset.
I've got several hundred brand new SAW resonators for a later Toshiba chip - useless these days, as the chip is about 3 bucks, and a whole modulator is a buck less. 
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Brian
USN RET 22YRS (Avionics/Cal)
CET-Consumer Repair and Avionics ('88)
"Capacitor Cosmetologist since '79"
When fuses go to work, they quit!
Last edited by Findm-Keepm; 09-29-2017 at 06:39 PM.
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