Hello to all. I have been searching with no luck to try and figure out what this is. I got it from a estate sale. The guy was a Motorola tech and I bought all of his radio items. Most of it is gone, what I have left I am keeping. But this one remains a stumper. The Motorola website was no help at all......so here it goes. It is Motorola, tag says FSCM: 94990, AN/AM-XXX, Part Number: 01-b35580c001. For all I know, this may not even be anything HAM related but the 'RF' in and 'RF' out tell me it is some kind of amp, pre-amp, or filter. Any help on this would be greatly appreciated. Also, a ballpark of what it is worth .....if anything. Thank you!