[Milsurplus] TCS-12 was main Buff commo system???

[POWERMWT at aol.com]

In a message dated 3/13/2005 9:57:32 PM Pacific Standard Time, 
ezeran at ezeran.cnc.net writes:
There is no correlation between the TCS
> Radio Transmitting And Receiving Equipment (built 1940-1944 and again
briefly
> 1951) and any jet engine.
>
> Robert Downs - Houston
You have renewed my interest in this thread, Robert.
MX-566A/MRC Installation Kit under Navy Contract NObsr-39325 approved 2 March 
1949 includes Radio Set AN/MRC-6A, listed as OA-26A/MRC-6 (similar to TCS 
with antenna). 

So, did the modify the TCS made in 1940 to 1944 for this installation? I also 
bought a power supply from you tagged and dated March 20, 1945. The TCS was 
not still being made at that time? 

Oh, also, I note the big letters, A, B, C, D, E, F, G on the front of some 
models (like up to TCS-12) and not on the final few models. Is that sequencing 
not required for the last models or were the operators trained differently?

Finally, was the TCS-15 the last made? When?

Regards,
Mark Tombleson