The Aska Multi-channel Digital Modulator accepts up to 3 audio/video outputs from three source creating three in-house television channels, either UHF channel of channels 14-83 or Ultra CATV channels of channels 65-139. The sources of video/audio input can be a VCR, DVD, CCTV camera, Satellite Receivers, etc. ARFDM3 is a three input mono modulator. The RFDM-3 modulates a video and left/right audio signal of a VCR, DVD, Satellite receiver, security camera, etc to a user selected TV channel. This is a 3-channel mono modulator input with ANT input that incorporates a commercial grade design intended for non-adjacent placement of the modulated channels in any free channel of UHF or CATV Ultra bands.