RF modulator , Audio /video AV (3 RCA) to coaxial converter, convert the separate audio and video signals to into VHF TV signals

RF modulator

Power : 220v

RF output channels :  3 or 4

RF output impedance : 75 ohm

Video input impedance : 75 ohm  / 1k ohm

Audio input impedance :  13+/-3k ohms

TV to ANT insertion loss 50-606 Mhz:  -2 dB

Size :  150x80x37mm