The big problem with issuing radios were their size and how fast the tubes ate batteries. It was a lot cheaper and more efficient back then just to attach a telephone to the tank. Plus, you couldn't get confused over which message you heard was for you or a tank 1/2 mile down the road.

Michael

Michael C. Fortner
"Maxim 37: There is no such thing as "overkill".
There is only "open fire" and "I need to reload".