Long distance AM tube transmitter ----- am Transmitter

Long distance AM tube transmitter, am Transmitter Keywords: modified transmitter circuit This machine is simple, the work is stable, the performance is good, and the required components can be purchased by the market. In 1992, the self-made teaching tool exhibition in Suihua District, 1992, received a praise from the majority of teachers. This machine can be used as a classroom teaching presentation, or can play a record or near-distance communication, which has a smaller distortion and better frequency response characteristics. Be The unit includes audio amplification and oscillation and two parts, and audio amplification consists of voltage amplification and power amplification, respectively by double triode 6N2 and beam quadrupole 6p1, and the oscillation portion is also held by 6p1. The audio signal is input by the gate input of the tube G1 (6n2). The signal sent by the power amplification stage G2 (6P1) after two amplification can be controlled by the 470K potentiometer, and the amplified audio signal and the high frequency oscillation signal are oscillating. The screen of the tube G3 (6P1) is mixed to make the audio signal to be transmitted on the high frequency oscillation current through the antenna. If you don't need to listen, you can replace the fieldmill y, a resistor in B1, only 3.5 Euro. The power supply is supplied with the power transformer with an AC five-lamp radio, which is rectified by the tube 6Z4, and has a stable DC after filtering. The transformer B1 used in this unit is a output transformer with a 6P1 tube. The secondary impedance is 3.5 ohm, L1 is a choke in an inductance of 10 MH. The L2 can be used in a general super-unity radio wave oscillator coil. Native output power 2 ~ 3W emission frequency 550 kHz ~ 1600 kWh consumption power 40W emission distance 1 km

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