The VeCOAX MINIMOD 2+ is a professional QAM modulator that converts any HDMI source into a J.83B QAM cable-TV channel and distributes it over your coaxial cable to unlimited TVs. QAM is the modulation cable systems use, and most TVs in commercial buildings are already set to Cable/QAM mode - so a QAM channel from this modulator appears right in their existing lineup. Plug in a cable box, Apple TV, camera, signage player or laptop, pick a QAM channel on the front-panel color LCD, and every TV tunes it in full 1080p with Dolby Digital audio, no streaming apps and no computer.A proper QAM modulator must produce a dense, clean constellation that TVs lock onto instantly. The MINIMOD 2+ delivers QAM channels 2-158 (J.83B), a powerful +45 dBmV output for runs up to roughly 9,800 ft, and MER above 45 dB with a Full Digital DDS synthesizer so the QAM signal stays rock-solid and stacks cleanly beside your existing cable channels with zero interference.Beyond QAM, this one modulator also outputs ATSC, DVB-T, DVB-C and ISDB-T - selectable on the LCD in under a minute, no PC required. Designed and built in the USA, backed by a 5-year manufacturer warranty and free unlimited lifetime tech support.