The Motorola SCR-536 - the original walkie talkie (called handy-talkie at first.) The same equipment is often called BC-611 for its main radio unit. Generally issued to the infantry.
Developed in 1940 by then Galvin Manufacturing,
later Motorola.
Correct,Admiral.Motorola called this the handie- talkie.The walkie- talkie was a 35 pound backpack unit called the bc1000.
Here are some unaltered pictures.
BTW,the answer to the challenge was visible in one of the first three photos I posted.