Blonder Tongue MICM-45 Audio/Video RF Modulator
 

Does anyone here have this?

How much range they have, Does anyone have a pic of the Back & the PSU that goes with it?

This does not have a rated "range," but should have a known power output, and if someone has attached one to an antenna, they maybe can tell you the range of their complete rig.

By the way, I recently was talking to an ex chief engineer from ABC, and he reminisced about what crap the Blonder-Tongue gear was. He said they had such trouble, they visited the factory to investigate the operation, and after seeing the mess there, he banned B-T gear from ABC owned stations.