This AM micro-transmitter with power that can reach a few meters is from a publication from the 1970s. We can mount it with BC558 transistors. The antenna must be from 2 meters to 5 meters and the transformer is a transistorized radio driver type. The coil has a winding of 30 turns and the other of 50 + 30 turns of wire 28 or 30 in a ferrite rod. The variable capacitor uses an AM radio that is not in use.
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