<p><b> All-Channel NTSC Composite BNC/RCA Video Audio To RF Coax TV Modulator<br> </b> This RF/coax agile modulator converts standard composite video/audio from such as sat/cable box , DVD player or CCTV surveillance camera to a user-defined cable or UHF/VHF V channel output. Any TV connected to the output from this RF modulator via coax cable connection can receive the same A/V signal when tuned to the specific channel.</p> <p>Its programmable TV channel selection allows users to assign any desired TV channel frequency for its RF output. Channel selection is controlled by the front panel push button.</p> <p><b>Air/CATV Video System Support</b><b><br> </b>This video/audio modulator is ideal for encoding audio/video onto any unused TV channel. One model with selectable system mode and wide channel frequency range support for both air UHF/VHF and CATV channel output. </p> <p><b>Long Range Transmission<br> </b>Featured with a powerful 100dB output, which is sufficient for long cable transmission up to 1200 meters with no loss of picture and sound.</p> <p><b>Easy Expansion<br> </b>Users can add more of these RF modulators for more video sources to be transmitted simultaneously through using RF combiner over the same coax cable wire.</p> <p><b>Video Audio Extension Over Coax Cable<br> </b>This RF modulator can also be combined with our RF demodulator, RFDM2 model, as a video/audio over coax cable extender kit.</p> <p><b>Adjustable Video Audio Level Control</b><b><br> </b>Featured with adjustable level controls of the video/audio input feed so the picture stability will be retained all the way with full brightness and contrast.</p> <p><b>1U 2U 3U Rack Mountable Design</b><b><br> </b> The optional rack-mount kits are available in 1U, 2U or 3U style and sold separately.</p>