[ARC5] TCS Xtals

[Mike Morrow]

Robert wrote:

>I'm not familiar with the BC-411.

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. 

Mike / KK5F