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I'll chime in - we used an ultrasonic mic (transducer robbed from another remote), a simple audio amp, and a frequency counter (robbed from the tape deck bench) to check clickers. I've seen folks use a Fluke 179 meter to check them too - albeit not an RCA unit, but a Magnavox. The 179 does frequency to 50Khz, and measures with a high-input impedance, so no loading, as some 50 ohm/1M ohm frequency counters do. You can also sometimes measure the clicker frequency by using the remote receiver
Leakage in the transistor can cause a frequency shift - a 2N406 is called for in most of the RCAs, but you can use just about any germanium audio transistor to replace it.
Oh, and make sure you have the right CRK ! They do have different frequencies - the 5A and 6A are almost identical, the battery (and battery voltage) being a significant difference. The higher-numbered units ( 7, 9, and up) are w-a-a-y different in freqs.
Hope this helps!
Cheers,
__________________
Brian
USN RET (Avionics / Cal)
CET- Consumer Repair and Avionics ('88)
"Capacitor Cosmetologist since '79"
When fuses go to work, they quit!
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