R1392 Crystals
Can anyone explain in laymans terms my query?
I bought the Air Ministry receiver R1392 because it covers the Airband frequencies, 118 to 137 Mc/s. But it needs 6 crystals according to the relevant Air Publication 2555F. There are plenty of crystals on ebay, but none of the required frequencies. Does each crystal just receive one broadcast or would it cover a range of frequencies? There is no wavechange/range switch on the receiver, so each time you want to hear a different airfield, do you have to change crystals? What would happen if a crystal of a different frequency to those specified in the AP were to be plugged in? As you will have gathered, I've never had anything to do with crystals before. Any advice geatfully received.
Thanks, Metropolitan.
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