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 which are placed in the living room. This is made possible by converting the A/V signal from the A/V equipment to RF signal and sending it to various rooms over 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 TV formats such as PAL/NTSC and Sound IF for global compatibility - Wide frequency range from 471.25MHz to 885.25MHz with selectable transmitting frequency and frequency display; built-in memory helps minimize and avoid interference - Broadcast-standard PCB circuit design enhances stability and improves picture quality - External selection for NTSC/PAL B/G, I, D/K, L, M/N TV formats for worldwide use - Compatible with set top boxes and other A/V sources - UHF modulator with PAL/NTSC format selection - Output channel selection available - 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 5VDC - Power Consumption: Less than 1W - Material: ABS - Item Size: 104 x 68 x 24mm - Item Weight: 80g - Package Weight: 122g - Package Size: 13.2 x 10.5 x 3.2cm Package List: - 1 x RF Modulator - 1 x USB Cable - 1 x Manual (English)