[ARC5] TCS Xtals

[mac]

Mike,

Yes, BC-441 is correct.

The MO-1 and the nearly identical MAK both use crystals in separate  
holders for transmit and receive.  Have working examples of both,  
BTW.  Nice little radios.  Look like a precursor to the TCS.  Do you  
know any history?

Dennis D.  W7QHO
Glendale, CA

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>> I believe that "BC-441" was the intended citation, part of SCR-281.
>>
>> FWIW, I've got about 30 TCS receiver and transmitter crystals.  
>> Every one
>> clearly indicates that it is a receiver or a transmitter crystal.  
>> None
>> have
>> an external pressure screw.
>>
>> The AN/ARC-9 (Bendix RTA-1B) uses a dual crystal unit.  All units  
>> came
>> from the factory with a standard set of ten frequencies installed.   
>> I'll
>> have to look closer at my MO-1 to see if it uses a dual crystal  
>> unit.  If
>> it does, I don't have any.