Use the NEC Corporation of Japan upc1651 integrated circuit, the high gain circuit, the working stability, thus ensuring high-performance microphone. FM transmitter with its circuit components. The tramsmitter use 40 - 50cm soft drag line for antenna, effectively fired from more than 30 meter. Fine-tuning L and capacitor, will enable the launch frequency coverage for the 88 - 108MHZ. L use enameled wire with diameter of 0.51mm in diameter and 4mm column originated from around 5 laps.

IC1, C1 component of the about 400HZ low-frequency oscillator; IC2, C3 component of the about 37MHZ high-frequency oscillator, C2 output from the low-frequency signals of high frequency modulation signals. C4 and antenna composition launch system. High-frequency harmonic oscillator in three TV channels to receive (or other channel) show a black-and-white section of the grid signal. A point, B point of the output signal, respectively, and the images of low-frequency channel for the detection of signal source. The C3 can replace quartz crystal oscillation frequency stability, as shown in Figure dashed part. C3 if the Department received a terminal or socket, to C3, respectively, into crystal; frequency selected 465KHZ, 10.7KHZ, 6.5KHZ, 4.43MHZ, 37MHZ can do on the radio and TV-IF signal source.