Feature:1. PARAMETERS: M61A modulator supports NTSC format output, frequency range: CH3=61.25MHz CH4=67.25MHz, video input impedance: 75 Ohms 1k Ohms (for Switch able), sound input impedance: 133k Ohms.2. VHF OPERATING FREQUENCY, NTSC CH3 CH4 CHANNEL: PLL controlled VHF operating frequency, output NTSC CH3 CH4 channel.3. FINE CRAFTSMANSHIP: Video sound RF modulator with fine workmanship and stable performance, suitable for your local CATV system.4. NTSC OUTPUT: Video sound RF modulator supports NTSC output, and the output format is only suitable for the Americas.5. PREMIUM MATERIAL: Digital RCA To RF modulator is made of premium ABS material, sturdy and durable, long service life. Professional manufacture, stable performance and high reliability.Specification:Item Type: RF ModulatorMaterial: ABS Model: M61ATV Standard Format: NTSCFrequency Range: NTSC: CH3=61.25MHz CH4=67.25MHzOutput Level: 805dBuVSound System: M=4.5MHzVideo Input Impedance: 75 Ohms or 1k Ohms (for Switch Able)Sound Input Impedance: 133k OhmsAV Connector Port: RCA FemaleRF Input: F FemaleRF Output: F FemaleInput Voltage Current: DC 5V 300mA.Package List:1 x Modulator1 x Power Supply Line 1 x Instruction ManualNote:This product only supports NTSC format output, only available in the Americas!