[maple_leaf_eh]

I admit to not recognizing the PRC #. So I used Goofle. That is a big box for a portable. From my limited knowledge of the radio spectrum, I was surprised at the width of frequencies available. My Cold War radio knowledge is C42, PRC510, RT524, PRC 25 and 77, and the simple TA43 field phone.

Once I used a handheld "ringer" telephone that hooked into the J1 box of the C42. There was a small magneto button on the handset to plunged and sent a 'hello' signal to the main vehicle. It was a remote for the the OP. I suppose the radio op in the vehicle could patch the OP onto the main radio network.