Well I guess I had to make at least one mistake...
Obviously the PRC-320 is a 24 vdc radio. What I should have said was that the cable I was using was in two parts..A standard Clansmen battery remoting cable cut in half. The end that mates with the radio is terminated with Power poles but in the opposite orientation to standard ham practice. It connects to a custom cable I made with matching power poles (swapped red/black orientation) that has power poles for connecting two 12V Bioenno 12V batteries in series. Both cables will come with the radio. And the other half of the Clansman cable so it still can be used as a remoting cable. Long explanation...
73,
Clare N2RJB