Features:
The RF modulator is fit for your own local CATV system.
VHF working frequency for PLL controlled, input, A/V output, RF output. Selectable output channels.
The RF coaxial converter supports NTSC TV format output, no need to install driver program, portable, flexible, and .
The VHF demodulator converter has personalised design, exquisite workmanship, making you fondle admiringly.
The RF modulator is made of material, sturdy, and long service . Professional manufacturing, stable characteristics and high reliability.

Specifications:
Model: M61A
Standard: NTSC
Material: ABS
Frequency : CH3=61.25MHz / CH4=67.25MHz
Output Impedance: 75 OHm
Output Level: 80±5dBμV
: M=4.5MHz
Video Input Impedance: 75 Ohms/1k Ohms (Switch able)
Audio Input Impedance: 13±3k Ohms
TV to Insertion Loss 50-860: -6±2dB
A/V Connector: RCA female 
RF Input: F female
RF Output: F female
Consumption: USB 5V
Operating : 0℃ ~ +40℃
Item Size: 62 * 63 * 25mm / 2.44 * 2.48 * 0.98in
Item Weight: 52g / 1.83oz
Package Weight: 107g / 3.77oz
Package Size: 13 * 10 * 3cm / 5.12 * 3.94 * 1.18in

Package List: E24905
1 * RF Modulator
1 * USB Cable
1 * User Manual (English)