Fm Stereo Transmitter Circuit


Posted on Sep 9, 2012

A BA1404 IC is used to generate a complete FM MPX signal. The chip contains all of the necessary circuitry. CI and R3, and R4 and C4 provide pre-emphasis. The transmitter runs on a single AA cell. L3 is 3 turns of #20 wire on a Ke drill (for a form). L3 is long. L4 is 4 turns #20 wire on `Me drill bit, spaced to %.


Fm Stereo Transmitter Circuit
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If monophonic operation is wanted, omit C5 and the 38-kHz oscillator components.




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