This transmitter is designed for experiments or video-surveillance. It uses a fundamental oscillator frequency for broadcast TV CH 58 or CH 61 AIR PAL. This little transmitter is just amazing. It will give you a broadcast quality picture up to 300 ft under ideal conditions! It measures only 0,8 X 0,6 X 0,2 inches. The transmitter is fully crystal controlled! The modulation is true AM. It uses a 9 V battery. This Design is just perfect, the video Transmitter will give you an Amazing B&W or Color picture. You can pick-up the signal using any kind of TV set tuned at CH 61 UHF AIR PAL. Just simply hookup this unit to any video camera. It is great for your cottage, beach house or even car or any kind of video-surveillance. This unit is adjustable from CH 58-61 UHF PAL.