The RF modulator is compatible with local CATV systems. VHF working frequency with PLL control, HD input, AV output, and RF output. The RF coaxial converter supports NTSC TV format output, requires no driver installation, and is portable, flexible, and plug and play. The VHF demodulator converter features a personalized design with fine craftsmanship. The RF modulator is constructed from highquality ABS material, durable with a long service life. Professionally manufactured for stable performance and high reliability. Standard: NTSC Frequency Range: CH3 = 61.25 Output Impedance: 75 Output Level: 805dBV Sound System: M = 4.5MHz Video Input Impedance: 75 Audio Input Impedance: 133k TV to ANT Insertion Loss 50860: 62dB AV Connector: female RF Input: TV Female RF Output: TV Male plug Power Consumption: USB 5V DC Operating Temperature: 0 to +40 Color: Black Material: Plastic Package Contents: 1 x AV to RF Modulator (Note: Product appearance may vary slightly by batch, but this does not affect functionality) The package includes only the items listed above. Note: Lighting and display differences may cause slight variations in color. Measurement error is + 13 cm.