I was in the Jayhawks LRRP in the 60s, I was the Radio Operator...we used ANGR 47s and were able, with CW, to reach Ft Bragg from the edge of the woods in Germany. we would stretch our antennas along the top wire of a farmers field. We were all about “Shoot and Scoot” In VN I was commo chief in the 2/327 of the 101st. definitly improvised antenna, canteen thrown over a limb to place the antenna worked for me...
When I was at Fort Gordon in ‘94 we still have GRC-106’s! I went back again in ‘99 as an instructor for a few years and we were STILL teaching them! They even had one in the Signal Museum.
They’ve got a nifty device now where you can type a long message and it will be sent out as a quick burst. Much better than the old methods.