I disagree that it is a broadcast unit but only for one reason a broadcast unit would be fixed frequency, no need for a huge tuning cap, ok two reasons I am not sure Collins made broadcast stuff, I almost thinking receiver only, or at the very most a low power transmitter, the power supply (the bottom chassis) doesn't look like it is built for high power, can we get a closeup items on the front? tags and the like? perhaps the labels on the meters? to quote Jonny five. "Need input" send more pics, you know what they say "Real radios glow in the dark" I know a Collins guy, he has rebuilt many units, you might be able to provide more info, I will send him a copy of the pics.