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MOTOROLA HT-1000 Service Manual: Boards' Schematic Diagram (sheet 1 Of 2)

Mtx series.
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NOTES:
1.
UNLESS OTHERWISE STATED RX DC VOLTAGES ARE MEASURED WITHOUT RF INTO J401.
2.
RX RF VOLTAGES IN dBm ARE MEASURED WITH A 1.5 pF CAPACITOR IN SERIES WITH
THE 50 OHM ADAPTER OF AN RF MILLIVOLTMETER AND AN RF LEVEL OF -20 dBm INTO J401.
3.
VOLTAGES IN mV ARE MEASURED WITH A X10 SCOPE PROBE.
4.
THESE LEVELS MEASURED BY REMOVING R52.
5.
MEASUREMENTS MADE ABOVE CROSSOVER FREQUENCY.
6.
MEASUREMENTS MADE BELOW CROSSOVER FREQUENCY.
7.
= NOT PLACED
*
2
5
PWR_OUT
PWR_IN
CR103
U104
C133
4
7
2
REV_PWR
FWD_PWR
6
3
3
REV_TRM
FWD_TRM
1.8pF
1
CR102
2
7
8
9
10
11
12
13
14
15
16
3
R126
1
R127
NC
39
51
C132
6.8pF
5Vdc (RX)
0Vdc (TX)
SB+
Q104
Q107
1
5
3
2
C162
C154
330pF
4
330pF
5V_REG
4
2
3
5
1
NC
6.3Vdc (TX)
C146
330pF
R199
C130
11pF
*
ANTENNA
S101
L128
RF
SWITCH
12T
L127
P401
J401
9T
1
3
GND
2
C151
C150
G1
10pF
20pF
TO UNIVERSAL
4
G2
CONNECTOR
8
EXTERNAL
ANTENNA
2
C112
TO UNIVERSAL
*
CONNECTOR
P402
5 6 7 9
EXT. ANT.
1
C77
R4
R5
0.1uF
10K
10K
C4
330pF
L12
L14
L13
470nH
5T
5T
CR1
CR2
CR6
CR7
-42dBm
L11
4T
CR3
CR4
CR8
CR9
B+
C163
51pF
6.5Vdc (TX)
C121
5V_REG
330pF
R139
C118
C153
C152
100K
DAC
CLK
D
0.1uF
330pF
330pF
5Vdc (TX)
R111
C3
B2
A2
A3
B3
C156
0Vdc (RX)
5.6K
1uF
R110
2.2K
R129
D1
SW2
4.7K
NC
B5
A4
NC
EN_BIAS
E2
C4
SW_C
U102
TX_DA
R113
D/A IC
0.5Vdc, 136MHz
33K
5Vdc (TX)
D4
B1
0Vdc, 178MHz
REF_DA
SC4
0Vdc (RX)
D5
C2
R_T
SC3
Q105
D2
SC1
1
0Vdc (RX)
R115
Q108
E3
C5
C1
E4
D3
B4
180K
5
1
NC
NC
R116
4
130K
2
3
2
R117
L131
C129
47K
1uH
1pF
CR108
6.7Vdc (RX)
L126
5.6Vdc (TX)
7.4Vdc (RX)
12T
L122
C147
.022uF
1uH
C141
CR109
330pF
C149
C148
20pF
5.1pF
L121
1uH
C140
R131
330pF
100K
-49dBm
7.3Vdc (RX)
FREQ
V (RX)
136MHz
1.0Vdc
R8
156MHz
2.3Vdc
178MHz
4.0Vdc
470
L8
150nH
6
L6
L7
68nH
120nH
2
OUT 7
IN
U1
1.4Vdc
-34dBm
RF AMPLIFIER
R1
4
5
ABP
AG2
10
1 3 8
L16
C9
0.6Vdc
*
4T
R2
56K
C14
C13
22uF
.01uF
E101
NC
C164
C101
C102
C103
0.1uF
100pF
330pF
10uF
C104
3.3uF
6
1
RF_OUT
RF_IN
3
V_CONTROL
U105
5
L130
C116
B_PLUS
4
RF P.A.
SWB_PLUS
R114
1uH
1pF
15K
C107
330pF
C161
C109
1uF
0.1uF
2.5Vdc
2.45Vdc (TX)
R106
3.3K
5
C123
C139
0.1uF
*
4
U103
5V REG
5Vdc
1
3
3
0Vdc (RX)
OUT
IN
C126
C128
2
3.3uF
1uF
1
TP10
4.6Vdc (RX/TX)
4.3Vdc (RX) (NOTE 4)
R72
100
C71
330pF
R70
CR12
1.5K
1
NC
3
2
4.7Vdc (NOTE 4)
C15
100pF
4.8Vdc
-62dBm
(NOTE 4)
CR11
L9
L3
L4
L10
100nH
56nH
47nH
39nH
47nH
C7
2.7pF
6.2pF
C97
13pF
C11
C90
C16
C6
C8
C87
.01uF
4.3pF
5.1pF
6.2pF
16pF
16pF
NUD7091B, NUD7092B, NUD/PMUD7095B, AND NUD7096B VHF (136-178MHz)
64
TRANSCEIVER BOARDS' SCHEMATIC DIAGRAM (Sheet 1 of 2)
R101
L101
0
1uH
2.2Vdc (TX)
B+
Q110
C106
C108
C105
330pF
330pF
10uF
B+
LCK
Q101
4.9Vdc (TX)
0Vdc (RX)
NC
NC
D3
E4
E3
C1
E2
B4
ICATH_2
PA_OUT
A3
B5
RE_DET
PA_CNTL
D1
C2
TX12
ANODE_2
NC
C5
U101
D2
DA_REF
RX_1
NC
TX ALC IC
D5
TEMP_SENSE
B1
C4
ANT_SW_BS
5V_TX
B2
C3
CATH_1
INT_CAP_OUT
A2
B3
D4
A4
C115
L105
.033uF
2.9Vdc (TX)
1uH
0Vdc (RX)
C135
R112
330pF
1MEG
R102
2.5Vdc (TX)
4.7K
3.2Vdc (TX)
5Vdc (TX)
0Vdc (RX)
C113
330pF
L32
2.2uH
C72
C12
330pF
*
4.8Vdc (RX)
0.1Vdc (TX)
0.4Vdc (RX)
R7
C83
C85
100
.01uF
10uF
3
C80
C99
L5
33pF
33pF
5
1
8
RF1
7
C86
U2
RF2
2
MIXER
14
BUFFER
LOIN
4
3
T1
1 5 6 9
L30
C98
C88
8.2pF
0.047 uH
330pF
TX_LO
RT101
50K
C111
330pF
AGC
C31
.01uF
T2
1
5
IF
2
12
IFP
11
3
4
IFN
2
BBP
4
BDIV
4Vdc
1Vdc
C84
C82
.01uF
.01uF
10 13
-31dBm (RX)
0.5Vdc
RX_LO
63B81097C02-O
Sheet 1 of 2

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