I'm doing a Kelly's Heroes-style pen and paper rpg campaign with some friends in the near future and I'm looking to have a good grounding on this whole topic. If the text covers the major pitfalls and failings in introducing radios at this level all the better.
If it turns out that there are loads of texts on this topic then anything about radio usage by recon units in Korea would be perfect but I'll take anything plus or minus thirty years about any nation's military if there's a paucity of texts.
In general, a lot of WW2 communications electronics carried over, so if you have things already on WW2, you're not necessarily far off.
The closest I can think of to a manual that will make you happy for the period you want is Marvin's Curtis's History of the Squad Radio published by US Army Electronics Command, which happens to be online. (Reddit doesn't like my link, but the first choice of this Google search should work.)
You might also enjoy Getting the Message Through: A Branch History of the U.S. Army Signal Corps which also happens to be online courtesy the US Army, if for nothing else this picture of a signalman using a water buffalo to stretch wires in Korea.
