Feature: 1. Sharing Function: The AV to RF TV modulator convertor can share set‑top boxes and DVDs with several rooms. 2. Multiple Formats: The RF modulator can be flexibly set to TV formats such as PAL NTSC and IF to suit users around the world. 3. Wide Frequency Range: The modulator has a wide frequency range of 471.25MHZ‑885.25MHZ, selectable transmit frequency and corresponding frequency display and built in memory will minimize and avoid interference. 4. Standard PCB Circuit Design: The AV to RF TV modulator is designed with broadcast standard PCB circuitry to further improve stability and better image quality. 5. Applicable: AV to RF TV modulator is suitable for global or external setups using NTSC PAL B G, 1, D K, L M N TV formats. Specification: Item Type: RF Modulator Material: ABS RF Frequency Range: 471.25MHz-885.25MHz Channel Range: PAL: 21-69; NTSC: 14-83 Default Factory Setting: Channel 21 (471.25MHz) PAL TV Format: PAL NTSC Sound Carrier Frequency: 4.5 5.5 6.0 6.5MHz . Package List: 1 x RF Modulator1 x USB Cable1 x Manual