VHF Audio/Video Sender

Posted on Jan 2, 2013

The circuit presented here is a simple audio/video transmitter with a range of 3 to 5 metres. The A/V signal source for the circuit may be a VCR, a satellite receiver or a video game etc. A mixer which also operates as an oscillator at VHF (H) channel 5 TV frequency is amplitude modulated by video signal and mixed with frequency mo enna, contains video carrier frequency of 175.25 Mhz and audio carrier frequency of 180.75 Mhz. Then, the transmitter is a B-System of CCIR compatible.

VHF Audio/Video Sender
Click here to download the full size of the above Circuit.

The circuit consists of transistor Q1 with its resonant tuned tank circuit formed by inductor L1 and trimmer capacitor VC1, oscillating at VHF (H) channel 5 frequency. Transistor Q2 with its tuned circuit formed using SIF coil and inbuilt capacitor forms

Leave Comment

characters left:

New Circuits



Popular Circuits

StunGun circuit
Lead Acid Battery Charger with LED indicator
Hi Fi headphone amplifier circuit diagram
burning hex files using usbasp
Video Signal Amplifier
Passive EQ for STAX
555 Capacitor Tolerance Adjustment circuit
Simple Motor Optical Encoder Circuit