Schematics

1
1
2
2
3
3
4
4
D D
C C
B B
A A
V-
3V
C2
47PF
Q1
C945-CR
R2
75K
L1
2.2UH
L2
4.7UH
X1
40.680MHz
K1
F
K2
B
A1
ANTENNA
C1
104PF
GND
3
F
2
B
1
U1
TX-3E
D1
4148
R1
15K
D2
LED1
R3
560R

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