Schematics

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A
1 of 1
1137/1140/1143/1144 TX
2022-08-20
Forward
Back
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Key sound
SPK sound
UP
Dowm
2.4GHz
ANT
16M +/-10ppm
Y1
3V
1
2
3
4
5
6
7
8 9
10
11
12
13
14
15
16
U1
C3
NC
L1
1.2nH
R3
1K
SW1
C4
10uF
C1
104
LED1
R1 220
K1
K2
K3
K4
K8
K7
K5
K6
R6
1R
C2
0.5P
VDD
VDD
PA3
PA4
PA0
PB0
PB1
PB2
PB7
PA7
PA6
PA4
PA6
PA7
PB0
PB1
PA0
PA3
PB7
PB2