Professional NTSC RF Coax To HDMI DVI Demodulator TV Tuner This RF coax to HDMI video audio demodulator is a professional grade TV tuner for decoding analog coax TV signals or RF modulated signals into HDMI formats at 1080p or 1920x1080 pixels for display or further A/V broadcast and distribution. This rack mountable RF demodulator supports full TV channel frequencies and can decode all standard UHF/VHF TV, CATV and satellite coax output channels for all NTSC systems. Easy Setup No initial configuration. No TV channel scan needed. Full-Frequency TV Channels For CATV Satellite This tuner unit supports all standard analog cable TV channels from CH1 to CH139 or aerial VHF/UHF channels from CH2 to CH83. The built-in tuner is used for all countries using NTSC for TV broadcast standard. This tuner can also decode those TV2 output from satellite receivers and all other Free-To-Air satellite set top boxes. Easy Add-On TV Tuner Module This unit is also a great add-on TV tuner module for those HD monitors/projectors that do not have coax TV tuner inputs or have broken RF coax input for alternative replacement solution. Last Channel Memory This coax demodulator tuner unit will stay tuned to the same last TV channel when the power comes back on after power-off or power outage or users manually unplugging the power adapter. Auto Gain Control The output quality will be re-calibrated and retained the picture stability with minimum distortion and noise-free with full brightness and contrast. 1U 2U 3U Rack Mountable Multiple units can be daisy chained together on 1U, 2U or 3U 19" rack, which is sold separately. The 1U rack mount kit can hold 2 units together. The 2U mounting kit can hold up to 4 units together on a rack. The 3U rack mount kit can hold up to 6 units together on a rack.