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 the living room. This is made possible by converting the A/V signal from the equipment to an RF signal and sending it to various rooms over existing RF circuits. Features: - Uses existing RF circuitry commonly found in homes - Enables sharing of STB, DVD, and other A/V sources with multiple rooms - Supports PAL/NTSC TV formats and adjustable sound IF frequencies for global compatibility - Wide frequency range from 471.25MHz to 885.25MHz with selectable transmitting frequency 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 other A/V signal sources - UHF modulator with PAL/NTSC format selection - Selectable output channel - Powered via USB Specifications: - RF Frequency Range: 471.25MHz - 885.25MHz - Channel Range: PAL: 21–69; NTSC: 14–83 - Default Factory Setting: Channel 21 (471.25MHz), 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 5V DC - Power Consumption: Less than 1W - Material: ABS - Item Size: 104 x 68 x 24mm / 4.09 x 2.68 x 0.94in - Item Weight: 80g / 2.85oz - Package Weight: 122g / 4.30oz - Package Size: 13.2 x 10.5 x 3.2cm / 5.20 x 4.13 x 1.26in Package List: - 1 x RF Modulator - 1 x USB Cable - 1 x User Manual (English)