Thanks for the reply Token.I have been in facilities with them (recently) and have used them, but I have never been inside one. Single channel mil UHF receiver covering 225 to 400 MHz. I think in 50 kHz steps. The synth to select the channel should be under the door on the right side of the unit. There was another nearly identical model that covered VHF. There was a matching transmitter if I remember right, for both the VHF and UHF models. I would venture to say still in use at some locations, but I suspect most/many have been replaced.
Wirelessly posted (BlackBerry8530/188.8.131.523 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/105)
I have had my hands in a few of them, but they were not my primary gear.
They were used for VHF air band on the aircraft carrier I was on, and both VHF and UHF at the Naval Air Station I was stationed at.
They are rather good radios, although not very modern. They will require some maintenance, to stay useful.