Feature:1. The RF modulator is fit for your own local CATV system.2. VHF working frequency for PLL controlled, HD input, A or V output, RF output. Selectable output channels.3. The RF coaxial converter supports NTSC TV format output, no need to install driver program, portable, flexible, plug and play.4. The VHF demodulator converter has personalised design, exquisite workmanship, making you fondle admiringly.5. The RF modulator is made of high quality plastic material, sturdy, High quality and long service life. Professional manufacturing, stable characteristics and high reliability.Specification:Features:The RF modulator is fit for your own local CATV system.VHF working frequency for PLL controlled, HD input, A or V output, RF output. Selectable output channels.The RF coaxial converter supports NTSC TV format output, no need to install driver program, portable, flexible, plug and play.The VHF demodulator converter has personalised design, exquisite workmanship, making you fondle admiringly.The RF modulator is made of high quality plastic material, sturdy, High quality and long service life. Professional manufacturing, stable characteristics and high reliability.Specifications:Model: M61AStandard: NTSCMaterial: ABSFrequency Range: CH3=61.25MHz or CH4=67.25MHzOutput Impedance: 75 OHmOutput Level: 80andplusmn 5dBVSound System: M=4.5MHzVideo Input Impedance: 75 Ohms or 1k Ohms (Switch able)Audio Input Impedance: 13andplusmn 3k OhmsTV to ANT Insertion Loss 50-860: -6andplusmn 2dBA or V Connector: RCA female RF Input: F femaleRF Output: F femalePower Consumption: USB 5V DCOperating Temperature: 0 - and40Item Size: 62 x 63 x 25mm or 2.44 x 2.48 x 0.98inItem Weight: 52g or 1.83ozPackage Weight: 107g or 3.77ozPackage Size: 13 x 10 x 3cm or 5.12 x 3.94 x 1.18inPackage List:1 x RF Modulator1 x USB Cable1 x User Manual (English)Package List:1 x RF Modulator1 x USB Cable1 x User Manual (English)