Circuit electronics FM transmitter 0,4 W
Circuit electronics FM transmitter 0,4 W
12-14 V stab., 100 mA
RF : 400 mW
Impedance : 50-75 ohm
Frequency range : 87,5-108 MHz
Modulation : wideband FM
C1, C2, C12 – 100 pF (ceramic)
C3, C5 – 0,22 uF (electrolytic)
C4 – 1,8 nF (plastic)
C13, C16, C17, C19 – 1 nF (ceramic)
C8, C9 – 10 pF (ceramic)
C10 – 47 pF (ceramic)
C11 – 8,2 pF (ceramic)
C14 – 60 pF trimmer
C15 – 35 pF trimmer
C18, C7 – 100 nF (ceramic)
C20 – 470 uF (electrolytic, 16 V)
R1, R2 – 10 k pot.
R3 – 33 k
R4, R7, R12 – 10 k
R5, R11 – 470
R6 – 27 k
R8 – 22 k
R9 – 270
R10 – 100
D1 – BB409 (BB109G, BBY31) varicap
T1 – BC547C (BC548C, BC547B)
T2 – BFR91A (BFR96)
T3 – BFR96
