Transistors UHF tuner circuit

  
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In the circuit, the adjustable prestage is composed of transistor AF279, and the natural oscillation mixer stage consists of transistor AF280. The power circuit is installed on the board with copper coating. The main coil data:L1, L3, L8, L9: eight turns, the coil uses 0.35mm copper enameled wire with diameter in 3mm;L2 : 3 turns, L10 : 15 turns, L11: 15 tur..
Transistors UHF tuner circuit - schematic




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