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: 13±3k 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 Modulator Material: ABS Model: M61A TV Standard Format: NTSC Frequency Range: NTSC: CH3=61.25MHz CH4=67.25MHz Output Level: 80±5dBuV Sound System: M=4.5MHz Video Input Impedance: 75 Ohms/1k Ohms (for Switch Able) Sound Input Impedance: 13±3k Ohms AV Connector Port: RCA Female RF Input: F Female RF Output: F Female Input Voltage Current: DC 5V 300mA. Package List: 1 x Modulator1 x Power Supply Line 1 x Instruction Manual Note: This product only supports NTSC format output, only available in the Americas