[Milsurplus] 618T radio

[Ray Fantini]

Starting to think my time may be better spent building up a 618T system rather then an ARC-58, due to the lack of anything being relatively local (within a thousand miles).
Have a couple questions about the 618T series, first is their just a 618T or just the 618T-2 and T-3? I know that the difference between a T-2 and T-3 is the DC vs. AC power, what was the 618T?  Did any version use an external power supply?  And how many have a real working set up? Would think the rack and connectors are the biggest issue.
Ray Fantini KA3EKH