[Milsurplus] MODEL 31 TELETYPE RESOURCE PAGE All variations of Model 31 present? Many th

[Ray Fantini]

Have been onboard  VC-118 "Independence"   at the presidential hanger at Wright Patterson and there is an ARC-38 that's installed for SSB that's set up for the flight crew  and a second 618S1 that's configured for CW operation at the navigators station. From what I recall think there were also two loran receivers but other than that the rest of the communications package was typical for a DC-6, no signs of ARC-8 or anything like in those pictures, although after presidential services the plane was used for some years as a VIP transport and maybe all that old stuff was stripped out?
Looking at the Independence, the VC-54 "Sacred Cow" and the VC-121"Columbine" may have additional ARC-8 systems installed but no sign of any teletype or crypto equipment. 
It's pure speculation on my part but would assume that until the very late fifties or around 1960 with the deployment of radios like the 618T, ARR-41 and teleprinters like the Mite (AN/TCG-14) the idea of teletype in an aircraft would not be practical. But that's just speculation on my part, if it did happen certain that someone here can point out that I am in error.

Ray F