[Milsurplus] TCS Tx and RX identity

[Mike Morrow]

Robert wrote:

>There was a TCS-15, also made by Air King.  So there were a total of 15 "models".

Interesting info, Robert.  Including the TCS(-0) model, wouldn't that mean there
were 16 total models?  And that would not include any commercial 51Q/56Q versions.

I always wonder how many of the "commercial" models of various WWII-era Collins military sets were sold for civilian use, in particular the 17H-2 (T-47/ART-13) and 51H-3 (R-105/ARR-15) units.  I've got a maintenance manual for the 17H-2, but it is identical to the equivalent military manual for the T-47.  I wonder if there were,
then, 17H-1 and 51H-2 versions.

>Which is not a record number.

I'm guessing the record goes to the RU series from 1930 to 1941:

RU, RU-1 to -19, plus RU-2a, RU-3a, RU-4a, RU-5a

All were made by A.R.C., except WECO's RU-16 to -19.  That's a total of 24 "models"!  

Mike / KK5F