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TRC-57 Channel Expansion?


does it use 12 crystals? if so swap out the multiplier crystal

http://kg4zpn.netai.net/cb/cmixing/AM 14950-23290-11275-11730.pdf

crystal "a" in one of the banks, its 23.xxx mhz. most SSB is on the upper channels so you wont miss much sacrificing a bank (4 channels each), or two of lowers to get the channels you want. ( i am thinking 37-40?)

A 23.700mhz crystal would give you channels 37-40

you could also add a switch to keep the original bank of channels

you will probably need to find a service manual or have it re-aligned.

another option is to get a VFO if you can find one
 
oh and unless its been used regularly over the last 30 years, or stored in a cave then I highly doubt the caps are still "wet". I have seen and own exceptions to this rule but usually the caps have dried out and need replaced
 

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