Schematics

1 2 3 4 5 6
A
B
C
D
654321
D
C
B
A
L1
1.5UH
L2
1.5UH
L4
8.7UH
Q1
945/CR
Q2
3904
R2100K
R3
100R
R5
10R
R4 33K
K4
C4
100P
K3
C8
100P
K2
C2
100P
K1
C5
104P
C9
68P
C3
47P
X1
27.145MHZ
ANTENNA
BT1
4.5V
VCC
L3
0.56UH
1
2
3
4
5
6
7
8 9
10
11
12
13
14
15
16
U1
W20190403
R11R
C0
226P
C6150P
K5
PTC1
WH60-020
SPEAKER
VCC
YNT-ZG-02T 27MHZ