User Manual Part 3

8-11
TO PG 5
FROM PG 6
+23dB -2dB +19dBm
+21dBm
+4dBm
SHIELD
0805 0805 0805
nT/R
TX_RF
PWR_CTL
TEMP
nT/R
T/nR
nTX_NAP
RX_IN
+5.5V
+5.5V
+3.3V
+3.3V
SW+5V
UNSW_BAT
SW+5V
+5.5V
SW+5V
SW+5V
+3.3V
SW+5V
UNSW_BAT1
C226
3300pf
D10
SI2323
1
23
C151
.01uf
C149
3300pf
E3
SHIELD-HARMONIC
1
GND
L11
51nH
C141
.1uf
R56
1M
C72
22pf L
FB2
FB-1210SO
12
Q5
2N7002
3
1
2
C38
33pf
R46
NP
L22
51nH
C162
3300pf
R68
9.1
C114
.01uF
Q3
2N7002
3
1
2
C152
.01uf
C158
120pF
R100
390
C124
3300pf
+
-
U21B
LM8272
5
6
7
8
4
R52
1K
U9
LM50/SOT23
12
3
+VCC VOUT
DNG
R105
4.7k
TP15
C137
.01uF
C156
NP
+
C172
1uF
R66
NP
D13
MA4P1250-1072
12
L26
NP
C39
12pf L
C34
3300pf
U20
SGA-6589
1
2
3
4
R103
10k
R69
10K
+
-
U21A
LM8272
3
2
1
84
L46
390nH
TP11
R101
390
U10
ILC7081AIM550x
15
42
3
IN OUT
BYPGND
nSHTDN
C223
100pf
C271
5.6pf L
R104
4.7k
C89
7.5pf L
R67
NP
R58
10K
C150
.01uf
C270
4.3pf L
C148
3300pF
C33
3300pf
U22
AD8361
1
2
3
45
6
7
8
VPOS
IREF
RFIN
PWDNCOMM
FLTR
VRMS
SREF
R54
NP
Q6
2N7002
3
1
2
C138
.022uf C46
3300pf
R102
10k
C224
3300pf
L47
390nH
R99
390
+ C105
1uF
L21
51nH
R76
0
C222
3300pf
C155
3300pF
R11
1K
R51
3.9K
C225
3300pf
C51
22pf L
+ C32
4.7uf 16V
R57
0
R62
0
U14
74V1G14
2
3
4
5
C113
100pf
R13
30
R50
0
J3
NP
1
2 3 4
Q4
2N7002
C163
.01uf
C45
NP
L49
NP
L48
390nH
J1
ANTENNA
1
2
3
4
FB3
FB-1210SO
12
D12
MA4P1250-1072
12
+
C125
4.7uF L
TP14
U3
POWER AMP
1
2 3
4
5
RFin
ggV
ddV
RFout
dnG
L31
220nH
NOTE: Individual replacement parts are not available for the
RF board, so the entire board must be replaced if it is defective.
VHF RF BOARD SCHEMATIC (PAGE 4 OF 6)