[Milsurplus] TCS Xtals

[mac]

All,

Bit hesitant here about bringing up "TCS" again following the fuss  
that developed following the last mention of these radios but let's  
see what happens. :^)

Been seeing and owning these (transmitters and receivers) for years,  
very popular radios, widely available and produced originally in large  
numbers.  But, very few of the crystals in their large holders which  
could be optionally used to control the transmitting and receiving  
frequencies seem to be in evidence.  Have never seen a fully populated  
set, transmitter or receiver, and rarely any set with any crystals  
installed at all.  Don't see them at 'fests or on eBay. What's the  
story here?  Were there sets of crystals produced for these radios,  
boxed with separate drawers for transmit and receive units like with  
the BC-669 for example?  Or, was xtal control found to be unnecessary/ 
undesirable in practice?  Or what?  Anyone know more?

Dennis D.  W7QHO
Glendale, CA