How to use:
Step 1: connect 5V1A with the USB output power adapter;
Step 2: Set the channel switch to CH3 or CH4 and the modulator switch to on; (off, RF does not work);
Step 3: Connect RF and RF OUT;
Step 4: connect the A/V input signal;
Step 5: Turn on the TV in CH3 or CH4;
Strictly follow the steps above.

Specification:
Item Type: RF Modulator
Material: Plastic
Standard TV format: NTSC
Frequency range: CH3=61.25 / CH4=67.25
Output impedance: 75 ohms
Output level: 80±5dBμV
Accompaniment system: M=4.5MHz
Video input impedance: 75 ohms/1k ohms (switchable)
Input impedance: 13±3k ohms
TV input loss to Ant I 50-860: -6±2dB
A/V connection: RCA female
RF input: F female
RF Output: F Female
Power consumption: 5 volts DC, 500 mAh (minimum)
Operating temperature: 0℃~+40℃

Package List:
1 x RF Modulator
1 x Transmission Line
1 x English manual