In WWII, many tanks used 5 crew: Commander, gunner, loader, driver and Radio Operator/hull MG gunner. In US tanks like the M4 Sherman, the 5th guy was called Assistant Driver/Bow Gunner. Did he handle the radio as well or was that done by the commander? The early 50’s M47 was the last US tank to even have the 5th crewman. How have radio duties been handled since then?
The loader has the ability to change settings on the radios, but every crewmember has the ability to TX/RX on both radios.
Well, thanks for that. I was hoping for a somewhat livelier thread.
Nope, that’s it. 
In an M1 the radios are on the left front of the inside of the turret at the loader’s station. In the M1A2 there is also Star Wars computer shit that the tank commander controls which allows encoded text burst communication with others. I’ve only been inside an A2 once so I’m far from being an expert. The crew communicates to each other with the intercom through their helmets. Its pretty much the only way to communicate with the driver without turning the turret around and pointing the gun over the back deck.