VHF 0.5 W TV Transmitter Circuit

Published:2011/7/15 21:07:00 Author:Joyce | Keyword: VHF, 0.5 W , TV, Transmitter | From:SeekIC

The TV transmitter introduced here can send audio and video signals of satellite television receivers, VCDs and video recorders in open circuit, and receives signals with open antennas. It is suitable for self-made programs of working units, schools, and factories. When folded dipole antenna is used to send signals, the covered distance is longer than 800 m. The circuitry is as shown in figure 1.IC1 is a dedicated circuit for TV RF modulators.It will choose SAW oscillator of same frequency point to modulate audio and video signals into RF signals of TV1 ~ 12 channels. Incomplete signals and sub wave signals will be filtered out by filter network A1 before RF signals output by IC1 is coupled to RF power amplifier circuit by C15 to be amplified and sent out.



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