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RF Frequency Modulation

Visha Electronics carries a very low cost FM transmitter kit based around BF494 NPN Bipolar Junction Transistor. The kit has a condenser microphone to pickup sound. A variable capacitor is also present to tune the transmission frequency anywhere in the 88-108 MHz range. The transmitted signals can be picked up by any stand radio receiver. A simple receiver circuit can also be built, like the one shown here.

Please visit for details on more such kits. Students are invited for workshops/courses at our LARE Learning Center for an opportunity to assemble and experiment with such kits.