With an input signal of at least 7 W this amplifier supplies 25 W in the FM band on its output. The recommended power is battery, given the high current and the possibility of snoring. The L1 coil consists of 10 turns of wire 18 in a 1 ohm x 1 W resistor (R4). L2 consists of 2 loops of wire 14 in the form of 8 mm spaced from a diameter of 1mm. CH1 and CH2 are formed by 4 turns of wire 24 in a ferrite core with a 6 mm x 10 mm hole.
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