Portable Radio User Manual
72
U101
TX ALC IC
U1
RF AMPLIFIER
U102
D/A IC
P.A.
U105
85Y11
COUPLER
U104
0Vdc (RX)
6.5Vdc (TX)
0Vdc (RX)
2.8Vdc (TX)
*
*
*
*
*
*
*
*
*
*
*
*
*
*
OF THE RF MILLIVOLTMETER & A RF LEVEL OF -20 DBM INTO J401.
2. RX RF VOLTAGES IN DBM ARE MEASURED WITH 1.5PF IN SERIES WITH 50 OHM ADAPTER
1. UNLESS OTHERWISE STATED RX DC VOLTAGES ARE MEASURED WITHOUT RF INTO J401.
NOTES:
0Vdc (TX)
4.9Vdc (RX)
0Vdc (RX)
3.9Vdc (TX)
VR (RX)
520MHz
0Vdc, 520MHz
0.55Vdc 450MHz
FREQ
-28dBm
6. MEASUREMENTS MADE BELOW CROSSOVER FREQUENCY.
5. MEASUREMENTS MADE ABOVE CROSSOVER FREQUENCY.
P402
NC
4. THESE LEVELS MEASURED BY REMOVING R52.
3. VOLTAGES IN mV ARE MEASURED WITH A X10 SCOPE PROBE.
2
1
NC
BUFFER
MIXER
NC
RF
5V REG
NC
5Vdc
NC
0.1Vdc (TX)
0Vdc (RX)
4.9Vdc (TX)
0Vdc (RX)
5Vdc (TX)
0Vdc (RX)
2.45Vdc (TX)
0Vdc (RX)
5Vdc (TX)
-50dBm
(NOTE 4)
3.6Vdc, 520MHz
3.5Vdc, 512MHz
-18dBm
-46dBm
1.5Vdc (TX)
P401
4.9Vdc (RX)
3.3Vdc (TX)
*
*
5Vdc (TX)
0Vdc (RX)
1Vdc
0.4Vdc (RX)
(NOTE 4)-31dBm
4Vdc
NC
2.2Vdc (TX)
7.4Vdc (RX)
-34dBm
ANTENNA
EXT. ANT.
CONNECTOR
7.5Vdc (RX)
6.8Vdc (TX)
TO UNIVERSAL
7. * = NOT PLACED
3.2Vdc, 450MHz
2.4Vdc0.6Vdc
3.50Vdc
3.16Vdc
1.14Vdc
512MHz
450MHz
-32dBm
7.4Vdc (RX)
6.5Vdc (TX)
5.8Vdc (TX)
NC
4.9Vdc (RX)
CR109
6.7Vdc (RX)
0.5Vdc
-22dBm (RX)
*
0Vdc (TX)
0.1Vdc (TX)
NC
NC
CR108
10
R27
22uF
C13
C105
100pF
GND
J401
.022uF100pF
C101
C153
100pF
C104
B4
PA_OUT
RECV_5V
E4
A3
RE_DET
D2
RX_1
D5
TEMP_SENSE
D1
TX12
5V_TX
C4
A2
ANODE_1
C2
ANODE_2
B1
ANT_SW_BS
D4
BIAS_EN
C1
BIAS_RT
D3
BPOS
B2
CATH_1
C5
DA_REF
B3
GND
E2
ICATH_2
A4
INT_CAP_IN
C3
INT_CAP_OUT
E3
PA_BIAS
B5
PA_CNTL
470nH
L16
30pF
C16
0.1uF
C17C12
100pF
10uF
C85C83
100pF
20pF
C98
R7
100
1
2
5
3
4
Q110
3
5
2
1
4
Q107
LOIN
8
RF1
7
RF2
Q108
GND
5
GND1
6
GND2
9
GND3
10
GND4
13
GND5
11
IFN
IFP
12
14
U2
2
BBP
4
BDIV
BVDD
3
1
L9
27nH
L8
470nH
100pF
C86
C108
L103
L34
L102
4.22nH
C102
C132
1.8pF
C133
R111
8.2pF
4.7K
1K
R110
R128
47K
CR103
1
3
2
CR11
CR101
1
3
2
1uF
C156
.01uF
220nH
L123
C11
L30
100pF
C72
L122
4.22nH
270nH
100pF
C145
100pF
C155
R52
100
R102
R116
130K
C151
4.7K
G1
4.3pF
1MEG
R119
C141
C87
100pF
C140
100pF
L121
4700pF
E101
57R01
270nH
270nH
L105
C82
1
2
3
5
4
.01uF
100pF
T1
G2
C114
R199
0
11.03nH
L32
4.3pF
C1
6.2pF
C2
L126L128
11.03nH
L127
11.03nH
C147
100pF
11.03nH
100pF
C135
10K
R22
180nH
L7
C126
3.3uF
1uF
L35
4.22nH
C128
CR8
CR9
51
R126
30
R127
C123
0.1uF
R113
33K
C157
0.1uF
.047uF
C115
C154
100pF
R23
L12
10K
11.03nH
L11
27.42nH
11pF
C7
12pF
13pF
C150
C18
C149
12nH
L10
9.1pF
100pF
C111
100pF
C113
50K
RT101
C127
R107
C139
150nH
150nH
L107
L108
C138
100pF
100pF
C137
L15
11.03nH
4
8.2pF
C90
T2
1
2
3
5
1
2
5
3
4
C103
10uF
Q105
100K
R139
D
CLK
CLK
ABP
4
AG2
5
GND1
1
GND2
3
GND3
8
IN
2
OUT
7
Vcc
6
4.22nH
L31
CR7
C121
CR6
L101
100pF
56pF
270nH
C9
C10
6.8pF
B+
39nH
L6
R115
180K
4.7K
R129
3.3K
R106
C94
12pF
R114
5V_REG
NC
NC
NC
15K
DAC D
B+
5V_REG
5V_REG
4.3pF
C89C88
56pF
19.61nH
L13
C119
100pF
C117
100pF
C109
Q101
SC2
C1
SC3
C2
SC4
B1
SEL
C3
SW1
E3
SW2
D1
SW_C
E2
TX_DA
C4
3
B_POS
1
RFIN
4
RFOUT
2
VCNTRL
A3
5V
CLK
B2
DATA
A2
EN_ANT
B4
EN_BIAS
A4
GND1
D3
GND2
E4
NC
B5
REF_DA
D4
RESET
B3
C5
RX_DA
R_T
D5
SC1
D2
100pF
E104
.01uFC15
C31
R26
R36
C120
IN
1
OUT
C110
U103
GND
2
3
4.3pF
C3
C99
5.6pF
5.1pF
1
10
34
6
78 9
5
RF_IN
2
RF_OUT
B+
C93
C118
0.1uF
.01uF
C84
1pF
C148
GND2
GND3
9
C116
1
2
3
4
8
5
GND
6
GND1
7
SWITCH
S101
6.8pF
5.1pF
C6
100pF
C5
5.6pF
C4
TP10
1
SB+
B+
DAC
C19
R130
C107
1
2
5
3
4
C106
Q104
L37
4.7uF
15nH
SB+
C91
15pF
C92
1.8pF
TX_LO
L14
11.03nH
AGC
IF
RX_LO
DAC
CLK
DATA
SB+
B+
5V_REG
LCK
63B81097C04-O
Sheet 1 of 2
TO UNIVERSAL
CONNECTOR
EXTERNAL
ANTENNA
NUE7267B, NUE7268B, NUE/PMUE7273B, AND NUE7275B UHF (450-520MHz)
TRANSCEIVER BOARDS’ SCHEMATIC DIAGRAM (Sheet 1 of 2)