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FM booster is a low-cost circuit that can be fed between an FM receiver and antenna to listen to distant commercial FM stations clearly.The main components of the circuit comprise of CS2570 transistor, trimmers and inductor coils.
Things which you can learn:
*Application of C2570 transistor.
*Working of trimmers.
*Maximum Power Transmission
*RF pre amplifier setup.
The FM booster can be used to listen to programs from distant FM stations clearly It basically extends the range by which distant channels can be received.
The circuit comprises a common-emitter tuned RF preamplifier wired around VHF/UHF transistor 2SC2570.
The input/output trimmers (VC1/VC2) for a set for maximum gain. An input coil L1 consisting of four turns of 20SWG enameled copper wire (slightly space wound) over 5mm diameter former, is tapped at the first turn from the ground lead side. Coil L2 is similar to L1 but has only three turns.