[Boatanchors] Old Spy Radios: RS-1 to AN/GRC-109 what about RS-6 ?

[windy10605@juno.com]

The RS-1 tube type "suitcase radio" was, as I have found out, a
completely redesigned follow-on to what was used during WWII. It was
widely used by the CIA and it's ppredecessor The military ruggedized it
into their version, the AN/GRC-109 which they also widely used up into
the early VietNam era. The question I have is about the RS-6, which is
the same basic design, is obviously designed to be lighter, smaller (with
it's pencil tubes), break down into 4 self contained units, etc. What was
it's purpose and where was it used. Was it meant to be carried in flight
suit pockets, trench coat pockets, multiple individuals, ?? Some say they
were used by the CIA, some on U-2s, B-47s, B-52s. Some say that's not
correct. I'm just trying to get some history about the unit. I was going
to give a presentation at one of the ham radio meetings and would like to
have some more facts than what I have today. Does anyone have a "users"
manual on the unit (I have the schematics on the little plastic cards) ?
Did anyone use these and have first hand experience ? 

73 Kees K5BCQ