Product Description This product is used to modulate audio/video signals into radio frequency (RF) signals for transmission over coaxial cable. Using this product, users in a room can share and remotely control digital set-top boxes, DVRs, DVDs, or AV receivers located in the living room. It works by converting the device's audio and video signals into RF signals and transmitting them to various rooms via existing RF circuitry. Product Features: - Uses existing RF circuitry commonly found in homes - Supports sharing with set-top boxes, DVDs, and other audio/video sources across multiple rooms - Supports PAL/TSC TV standards and adjustable audio intermediate frequency for global compatibility - Wide frequency range from 471.25MHz to 885.25MHz, selectable transmit frequency and screen-display frequency; built-in memory helps minimize interference - Broadcast-grade PCB design ensures enhanced stability and improved image quality - External selection supports NTSC AL B/G, I, D/K, L, M TV formats - Compatible with set-top boxes and other A/V signal sources - UHF modulator with PAL/TSC format selection - Selectable output channels - Powered via USB Specifications: - RF frequency range: 471.25MHz - 885.25MHz Channel Range: PAL: 21–69; NTSC: 14–83 - Factory Default Settings: Channel 21 (471.25MHz), PAL - RF Output Impedance: 75 Ohms Unbalanced - Video Input Impedance: 75 Ohms - TV Standard: PAL TSC - Audio Carrier Frequency: 4.5 / 5.5 / 6.0 / 6.5 MHz - Power Supply: USB 5V DC - Power Consumption: Less than 1W - Material: ABS - Product Dimensions: 104 x 68 x 24 mm / 4.09 x 2.68 x 0.94 in - Product Weight: 80 g / 2.85 oz - Package Weight: 122 g / 4.30 oz - Package Dimensions: 13.2 x 10.5 x 3.2 cm / 5.20 x 4.13 x 1.26 inches Package List: - 1 x RF Modulator - 1 x USB Cable - 1 x User Manual (English)