FM booster is one kind of a preamplifier which can be used to listen FM radio programs from distance FM stations clearly. The circuit comprises a common-emitter tuned RF preamplifier which tuned RF preamplifier wired around VHF/UHF transistor 2SC2570.
Serial
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Parts Lists
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Value
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1
|
R1
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27kΩ
|
2
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R2
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270Ω
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3
|
R3
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1kΩ
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4
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C1
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5.6pF
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5
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C2
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5.6pF
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6
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C3
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1n
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7
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C4
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8
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C5
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10pF
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9
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C6
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0.1µF
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10
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VC1
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22pF Trimmer capacitor
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11
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L1
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1T FROM BOTTOM END
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12
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L2
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3T, 20SWG 5mm DIA, AIR CORE
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13
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T1
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2SC2570
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Adjust input/ output trimmers (VC1/VC2) for maximum gain.
helpful work
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