To modulate Audio/Video/signal to RF signal over coaxial. With this product, users in the room can share and remotely control their Digital Set Top Box, DVR, DVD, or AV Receiver located in another area such as the living room. This is achieved by converting the A/V signal from the source equipment into an RF signal and transmitting it to different rooms via existing RF circuits.Features: - Utilizes existing RF circuitry commonly found in homes - Enables sharing of STB, DVD, and other A/V sources across multiple rooms - Supports selectable TV formats including PAL/NTSC and sound IF frequencies for global compatibility - Wide frequency range from 471.25 MHz to 885.25 MHz with selectable transmission channels and on-screen frequency display; built-in memory helps minimize interference - Broadcast-standard PCB design ensures enhanced stability and improved picture quality - External selection support for NTSC/PAL B/G, I, D/K, L, M/N TV formats - Compatible with set-top boxes and various A/V signal sources - UHF modulator with PAL/NTSC format selection - Selectable output channel - Powered via USBSpecifications: - RF Frequency Range: 471.25 MHz – 885.25 MHz - Channel Range: PAL: 21–69; NTSC: 14–83 - Default Factory Setting: Channel 21 (471.25 MHz), PAL - RF Output Impedance: 75 Ohm unbalanced - Video Input Impedance: 75 Ohm - TV Format: PAL/NTSC - Sound Carrier Frequency: 4.5 / 5.5 / 6.0 / 6.5 MHz - Power Supply: USB 5 VDC - Power Consumption: Less than 1 W - Material: ABS - Item Size: 104 x 68 x 24 mm - Item Weight: 80 g - Package Weight: 122 g - Package Size: 13.2 x 10.5 x 3.2 cm Package List: - 1 x RF Modulator - 1 x USB Cable - 1 x User Manual (English)