Motorola Two Way Portable Radio Ht1000 Mt2000 Mts2000 Mtx Series 68p81200c40 O Manual

							HT 1000,  MT 2000,  MTS 2000, 
and MTX Series
Handie-Talkie
®Portable Radios
Service Section
TM TM TM
Motorola 
8000 West Sunrise Boulevard
Fort Lauderdale, Florida  33322
68P81200C40-O*6881200C40* 
						

							Service Section
68P81200C40-O
CONTENTS
© 1994 by Motorola, Inc., Radio Products Group
8000 W. Sunrise Blvd., Ft. Lauderdale, FL 33322
Printed in U.S.A. 7/94. All Rights Reserved., Motorola, Handie-Talkie,  JT 1000, HT 1000, MT 2000, MTS 2000, MTX 838, MTX 8000, and MTX 9000 are trademarks of Motorola, Inc.TITLEPAGELIST OF TABLES.....................................................................................................................................................................
iii
LIST OF ILLUSTRATIONS ......................................................................................................................................................
iii
RELATED PUBLICATIONS AVAILABLE SEPARATELY ........................................................................................................
iii
MODEL NUMBERING SYSTEM .............................................................................................................................................
iv
LIST OF MODELS ....................................................................................................................................................................
v
LIST OF ANTENNAS AND BATTERIES .................................................................................................................................
vi
MAINTENANCE SPECIFICATIONS FOR VHF RADIOS .......................................................................................................
vii
MAINTENANCE SPECIFICATIONS FOR UHF RADIOS .......................................................................................................
vii
MAINTENANCE SPECIFICATIONS FOR 800MHz RADIOS ................................................................................................
viii
MAINTENANCE SPECIFICATIONS FOR 900MHz RADIOS ................................................................................................
viii
SECTION I. INTRODUCTION ................................................................................................................................................1
SECTION II. RECOMMENDED AND REQUIRED TEST EQUIPMENT, SERVICE AIDS, AND TOOLS LISTS ....................2
A. Recommended Test Equipment .........................................................................................................................2
B. Service Aids and Recommended Tools .............................................................................................................2
C. Field Programming .............................................................................................................................................2
SECTION III. TRANSCEIVER PERFORMANCE TESTING ....................................................................................................5
A. General ...............................................................................................................................................................5
B. Setup ..................................................................................................................................................................5
C. Test Mode...........................................................................................................................................................5
SECTION IV. ERROR CODE DISPLAYS...............................................................................................................................10
A. Power-up Display Codes ..................................................................................................................................10
B. Operational Display Codes ...............................................................................................................................10
SECTION V. RADIO ALIGNMENT PROCEDURE ................................................................................................................11
A. General .............................................................................................................................................................11
B. Reference Oscillator Alignment ........................................................................................................................13
C. Front-End Pre-Selector (VHF/UHF only) ..........................................................................................................13
D. Rated Audio ......................................................................................................................................................13
E. Squelch.............................................................................................................................................................13
F. Transmitter Power ............................................................................................................................................14
G. Transmit Deviation Balance (Compensation) ...................................................................................................14
H. Transmit Deviation Limit ...................................................................................................................................14
I. Transmit Deviation Limit Reference .................................................................................................................15
J. VCO Crossover Frequency ..............................................................................................................................15
K. Signalling Deviation ..........................................................................................................................................15
SECTION VI. DISASSEMBLY AND REASSEMBLY ..............................................................................................................17
A. General .............................................................................................................................................................17
B. Disassembly to Board Level .............................................................................................................................17
C. Disassembly of Control Top .............................................................................................................................19
D. Disassembly of Front Cover Assembly.............................................................................................................20
E. Reassembly ......................................................................................................................................................21
SECTION VII. MAINTENANCE ...............................................................................................................................................23
A. Introduction .......................................................................................................................................................23
B. Preventive Maintenance ...................................................................................................................................23
C. Safe Handling of CMOS Devices .....................................................................................................................23
D. Repair Procedures and Techniques .................................................................................................................23
HT 1000,  MT 2000,  MTS 2000, 
and MTX Series
Handie-Talkie
®Portable Radios
TM TM TM 
						

							ii
CONTENTS (cont.)
TITLEPAGENUD7070A, NUD7070B, NUD7085A, AND NUD7085B VHF TRANSCEIVER BOARDS’ 
COMPONENT LOCATION DIAGRAMS AND SCHEMATIC DIAGRAM ............................................................................29
NUD7070A, NUD7070B, NUD7085A, AND NUD7085B VHF TRANSCEIVER BOARDS’  PARTS LIST, AND
NUE7213A, NUE7213B, NUE7231B, NUE7240A, AND NUE7240A UHF (403-470MHz) 
TRANSCEIVER BOARDS’ COMPONENT LOCATION DIAGRAMS .................................................................................30
NUE7213A, NUE7213B, NUE7231A, NUE7231B, NUE7240A, AND NUE7240B UHF (403-470MHz)
TRANSCEIVER BOARDS’ SCHEMATIC DIAGRAM .........................................................................................................31
NUE7213A, NUE7213B, NUE7231A, NUE7231B, NUE7240A, AND NUE7240B UHF (403-470MHz)
TRANSCEIVER BOARDS’ PARTS LIST, AND NUE7214A, NUE7214B, NUE7232A, NUE7232B, NUE7241A, AND
NUE7241B UHF (450-520MHz) TRANSCEIVER BOARD COMPONENT LOCATION DIAGRAMS .................................32
NUE7214A, NUE7214B, NUE7232A, NUE7232B, NUE7241A, AND NUE7241B UHF (450-520MHz) 
TRANSCEIVER BOARDS’ SCHEMATIC DIAGRAM .........................................................................................................33
NUE7214A, NUE7214B, NUE7232A, NUE7232B, NUE7241A, AND NUE7241B UHF (450-520MHz)
TRANSCEIVER BOARDS’ PARTS LIST, AND NUF6394A, NUF6394B, NUF6410B, NUF6423A, AND NUF6423B, 
800MHz TRANSCEIVER BOARDS’ COMPONENT LOCATION DIAGRAMS ...................................................................34
NUF6394A, NUF6394B, NUF6410A, NUF6410B, NUF6423A, AND NUF6423B 800MHz 
TRANSCEIVER BOARDS’ SCHEMATIC DIAGRAM .........................................................................................................35
NUF6394A, NUF6394B, NUF6410A, NUF6410B, NUF6423A, AND NUF6423B 800MHz TRANSCEIVER BOARDS’ 
PARTS LIST, AND NUF6395B, NUF6395C, NUF6424A, AND NUF6424B 900MHz TRANSCEIVER BOARDS’ 
COMPONENT LOCATION DIAGRAMS .............................................................................................................................36
NUF6395B, NUF6395C, NUF6424A, AND NUF6424B 900MHz TRANSCEIVER BOARDS’ SCHEMATIC DIAGRAM ...........37
NUF6395B, NUF6395C, NUF6424A, AND NUF6424B 900MHz TRANSCEIVER BOARDS’ PARTS LIST, AND
NTN7089A/NTN7092A CONTROLLER BOARDS’ (JT 1000/HT 1000 MODELS ONLY) COMPONENT
LOCATION DIAGRAMS .....................................................................................................................................................38
NTN7089A/NTN7092A CONTROLLER BOARDS’ (JT 1000/HT 1000 MODELS ONLY) SCHEMATIC DIAGRAM ..................39
NTN7089A/NTN7092A CONTROLLER BOARDS’ (JT 1000/HT 1000 MODELS ONLY) PARTS LIST, 
MISCELLANEOUS PARTS LIST, FRONT COVER/DISPLAY FLEX, CONTROLS FLEX, JUMPER FLEX,
AND NTN7091A/NTN7093A CONTROLLER BOARDS’ COMPONENT LOCATION DIAGRAMS ....................................40
NTN7091A/NTN7093A CONTROLLER BOARDS’ SCHEMATIC DIAGRAM ............................................................................41
NTN7091A/NTN7093A CONTROLLER BOARDS’ PARTS LIST, SHIELDS LOCATION DETAIL AND PARTS LIST,
UNIVERSAL (ACCESSORY) CONNECTOR PIN NUMBERS AND SIGNAL ASSIGNMENTS, AND
NTN7620B CONTROLLER BOARD COMPONENT LOCATION DIAGRAMS...................................................................42
NTN7620B CONTROLLER BOARD SCHEMATIC DIAGRAM ..................................................................................................43
NTN7620B CONTROLLER BOARD PARTS LIST, AND NTN7512A, NTN7513A, NTN7857A, AND
NTN7858A CONTROLLER BOARDS’ COMPONENT LOCATION DIAGRAMS ...............................................................44
NTN7512A, NTN7513A, NTN7857A, AND NTN7858A CONTROLLER BOARDS’ SCHEMATIC DIAGRAM ...........................45
NTN7512A, NTN7513A, NTN7857A, AND NTN7858A CONTROLLER BOARDS’ PARTS LIST,
BASIC RADIO EXPLODED VIEW DIAGRAM, TOP-DISPLAY EXPLODED VIEW DIAGRAM, AND PARTS LIST ..........46
KEYPAD RADIO EXPLODED VIEW DIAGRAM AND PARTS LIST..........................................................................................47
INTEGRATED CIRCUITS WITH PIN-OUT NAMES ..................................................................................................................48
APPENDIX .................................................................................................................................................................................51
REPLACEMENT PARTS ORDERING ...............................................................................................................
inside back cover 
						

							iii
RELATED PUBLICATIONS AVAILABLE SEPARATELY
Service Manual (early version radios; first issue- 4/92) ...........................................................................................68P81200C20
Service Manual (later version radios; first issue- 4/93) ............................................................................................68P81200C25
Service Manual (this publication; present version radios; first issue- 7/94) .............................................................68P81200C40
includes:
• all servicing information
• assembly / disassembly
• maintenance
Theory Manual .........................................................................................................................................................68P81200C15
includes:
• theory of operation
• troubleshooting information and troubleshooting charts
Secure Modules Instruction Manual ........................................................................................................................68P81200C35
Operating Instructions
• HT 1000 A Model Portable Radios ....................................................................................................68P81071C70
• HT 1000 B Model Portable Radios ....................................................................................................68P81079C50
• MT 2000 Portable Radios..................................................................................................................68P81076C65
• MTS 2000  I Portable Radios ............................................................................................................68P81072C15
• MTS 2000  II and  III Portable Radios ...............................................................................................68P81072C45
• MTX Series Model B3 Privacy Plus Portable Radios ........................................................................68P81072C10
• MTX Series Model B4 Privacy Plus Portable Radios ........................................................................68P81073C60
• MTX Series Model B5 and B7 Privacy Plus Portable Radios............................................................68P81072C40
Mobile Vehicular Adapter (MTVA) Operating Instructions .......................................................................................68P81075C85
Mobile Vehicular Adapter (MTVA) Installation Instructions......................................................................................68P81075C90
Mobile Vehicular Adapter (MTVA) Service Manual .................................................................................................68P81075C95
Remote Speaker Microphones NMN6191A / N MN6193A Operating Instructions ..................................................68P81073C40
Remote Speaker Microphones NMN6191A / N MN6193A Service Manual ............................................................68P81200C30
Public Safety Speaker Microphone NMN6228A Operating Instructions ..................................................................68P81079C15
Public Safety Speaker Microphone NMN6228A Service Manual ............................................................................68P81009C41TABLE TITLEPAGEFIGURE TITLEPAGE
LIST OF TABLES
LIST OF ILLUSTRATIONS
40-1 Radio Alignment Test Set-Up  ...............................................................................................................11
40-2 RSS Service Menu Layout .....................................................................................................................12
40-3 Softpot Concept .....................................................................................................................................12
40-4 thru 40-17 Disassembly And Reassembly .........................................................................................................17-27 40-1 Recommended Test Equipment ..............................................................................................................2
40-2 Service Aids .............................................................................................................................................3
40-3 Recommended Service Tools ..................................................................................................................4
40-4 Initial Equipment Control Settings ............................................................................................................5
40-5 Test Environments, HT 1000 Radios .......................................................................................................5
40-6 Test Frequencies, HT 1000 Radios .........................................................................................................6
40-7 Test Environments, MT 2000, MTS 2000, and MTX Series Radios ........................................................7
40-8 Test Frequencies, MT 2000, MTS 2000, and MTX Series Radios ..........................................................7
40-9 Receiver Performance Checks ................................................................................................................8
40-10 Transmitter Performance Checks ............................................................................................................9
40-11 Power-up Display Codes .......................................................................................................................10
40-12 Operational Display Codes ....................................................................................................................10
40-13 Reference Oscillator Alignment .............................................................................................................13
40-14 Standard Test Modulation (1kHz Tone) .................................................................................................13
40-15 Transmit Power Setting..........................................................................................................................14
40-16 Transmit Deviation Limit ........................................................................................................................15
40-17 Transmit Deviation Limit Reference .......................................................................................................15
40-18 Signalling Deviation ...............................................................................................................................16 
						

							iv
MODEL NUMBERING SYSTEM
Position 1 - Type of Unit
H  = Hand-Held PortablePositions 2 & 3 - Model SeriesPosition 4 - Frequency Band
Less than 29.7MHz
29.7 to 35.99MHz
36 to 41.99MHz
42 to 50MHz
66 to 80MHz
74 to 90MHz
Product Specific
136 to 162MHz
146 to 178MHz
174 to 210MHz
190 to 235MHz336 to 410MHz
403 to 437MHz
438 to 482MHz
470 to 520MHz
Product Specific
806 to 870MHz
825 to 870MHz
896 to 941MHz
1.0 to 1.6GHz
1.5 to 2.0GHzValues given represent range only; they are
not absolute.
Position 5 - Power Level
0 to 0.7 Watts
0.7 to 0.9 Watts
1.0 to 3.9 Watts
4.0 to 5.0 Watts
5.1 to 6.0 Watts
6.1 to 10 WattsPosition 6 - Physical Packages
RF Modem Operation
Receiver Only
Standard Control; No Display
Standard Control; With Display
Limited Keypad; No Display
Limited Keypad; With Display
Full Keypad; No Display
Full Keypad; With Display
Limited Controls; No Display
Limited Controls; Basic Display
Limited Controls; Limited Display
Rotary Controls; Standard Display
Enhanced Controls; Enhanced Display
Low Profile; No Display
Low Profile; Basic Display
Low Profile; Basic Display, Full KeypadPosition 7 - Channel Spacing
1 = 5kHz
2 = 6.25kHz
3 = 10kHz
4 = 12.5kHz5 = 15kHz
6 = 20/25kHz
7 = 30kHz
9 = Variable/Programmable
Typical Model Number:
Position:
Position 8 - Primary Operation
Conventinal/Simplex
Conventional/Duplex
Trunked Twin Type
Dual Mode Trunked
Dual Mode Trunked/Duplex
Trunked Type I
Trunked Type II
FDMA* Digital Dual Mode
TDMA** Digital Dual Mode
Single Sideband
Global Positioning Satellite Capable
Amplitude Companded Sideband (ACSB)
Programmable
* FDMA = Frequency Division Multiple Access
** TDMA = Time Division Multiple AccessPosition 9 - Primary System Type
Conventional
Privacy Plus®
Clear SMARTNET™
Advanced Conventional Stat-Alert™
Enhanced Privacy Plus®
Nauganet 888 Series
Japan Specialized Mobile Radio (JSMR)
Multi-Channel Access (MCA)
CoveragePLUS™
MPT1327* - Public
MPT1327* - Private
Radiocom
Tone Signalling
Binary Signalling
Phonenet®
Programmable
Secure Conventional
Secure SMARTNET™* MPT = Ministry of Posts and Telecommunications
Position 10 - Feature Level
1 = Basic
2 = Limited Package
3 = Limited Plus
4 = Intermediate
5 = Standard Package6 = Standard Plus
7 = Expanded Package
8 = Expanded Plus
9 = Full Feature/
      Programmable
Position 11 - Version
Version Letter (Alpha) - Major Change
Position 12 - 
Unique Model Variations
C = Cenelec
N = Standard Package
Positions 13 - 16
“SP” Model Suffix
1 23 4 5 6 7 8 9 10 11 1213 141516 H01 K DD 9 P W 1 B N S P 0 1
A
B
C
D
F
G
H
J
K
L
M=
=
=
=
=
=
=
=
=
=
=P
Q
R
S
T
U
V
W
Y
Z=
=
=
=
=
=
=
=
=
=
A 
B
C
D
E
F=
=
=
=
=
=
A 
B
C
D
E
F
G
H
J
K
L
M
N
P
Q
R=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=A 
B
C
D
E
F
G
H
J
K
L
M
P=
=
=
=
=
=
=
=
=
=
=
=
=A 
B
C
D
E
F
G
H
J
K
L
M
N
P
Q
W
X
Y=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
= 
						

							v
LIST OF MODELS
HT 1000 Model Family
H01KDC9AA1BN 2-Freq., 5- to 1-Watt, 136 - 178 MHz
H01KDC9AA3BN 16-Freq., 5- to 1-Watt, 136 - 178 MHz
H01RDC9AA1BN 2-Freq., 4- to 1-Watt, 403 - 470 MHz
H01RDC9AA3BN 16-Freq., 4- to 1-Watt, 403 - 470 MHz
H01SDC9AA1BN 2-Freq., 4- to 1-Watt, 450 - 520 MHz
H01SDC9AA3BN 16-Freq., 4- to 1-Watt, 450 - 520 MHz
H01UCC6AA1BN 2-Freq., 3-Watt, 806 - 870 MHz
H01UCC6AA3BN 16-Freq., 3-Watt, 806 - 870 MHz
MT 2000 Model Family
H01KDD9AA4AN 16-Freq., 6-Character Top Display, 5- to 1-Watt, 136 - 178 MHz
H01KDH9AA7AN 10-Zone, 16-Channel,14-Character Front Display, Full Keypad, 5- to 1-Watt, 
136 - 178 MHz
H01RDD9AA4AN 16-Freq., 6-Character Top Display, 4- to 1-Watt, 403 - 470 MHz
H01RDH9AA7AN 10-Zone, 16-Channel, 14-Character Front Display, Full Keypad, 4- to 1-Watt, 
403 - 470 MHz
H01SDD9AA4AN 16-Freq., 6-Character Top Display, 4- to 1-Watt, 450 - 520 MHz
H01SDH9AA7AN 10-Zone, 16-Channel,14-Character Front Display, Full Keypad, 4- to 1-Watt, 
450 - 520 MHz
H01UCD6AA4AN 16-Freq., 6-Character Top Display, 3-Watt, 806 - 870 MHz
H01UCH6AA7AN 10-Zone, 16-Channel, 14-Character Front Display, Full Keypad, 3 -Watt, 
806 - 870 MHz
H01WCD4AA4AN 16-Freq., 6-Character Top Display, 2.9 Watt, 896 - 941 MHz
H01WCH4AA7AN 10-Zone, 16-Channel, 14-Character Front Display, Full Keypad, 2.9 Watt, 896 - 941 MHz
MTS 2000 Model Family
H01KDD9PW1BN 16-Mode, 6-Character Top Display, 5- to 1-Watt, 136 - 178 MHz
H01KDF9PW1BN 16-Mode, 14-Character Front Display, Limited Keypad, 5- to 1-Watt, 136 - 178 MHz
H01KDH9PW1BN 16-Mode, 14-Character Front Display, Full Keypad, 5- to 1-Watt, 136 - 178 MHz
H01RDD9PW1BN 16-Mode, 6-Character Top Display, 4- to 1-Watt, 403 - 470 MHz
H01RDF9PW1BN 16-Mode, 14-Character Front Display, Limited Keypad, 4- to 1-Watt, 403 - 470 MHz
H01RDH9PW1BN 16-Mode, 14-Character Front Display, Full Keypad, 4- to 1-Watt, 403 - 470 MHz
H01SDD9PW1BN 16-Mode, 6-Character Top Display, 4- to 1-Watt, 450 - 520 MHz
H01SDF9PW1BN 16-Mode, 14-Character Front Display, Limited Keypad, 4- to 1-Watt, 450 - 520 MHz
H01SDH9PW1BN 16-Mode, 14-Character Front Display, Full Keypad, 4- to 1-Watt, 450 - 520 MHz
H01UCD6PW1BN 16-Mode, 6-Character Top Display, 3-Watt, 806 - 870 MHz
H01UCF6PW1BN 16-Mode, 14-Character Front Display, Limited Keypad, 3-Watt, 806 - 870 MHz
H01UCH6PW1BN 16-Mode, 14-Character Front Display, Full Keypad, 3-Watt, 806 - 870 MHz
H01WCD4PW1BN 16-Mode, 6-Character Top Display, 2.9 Watt, 896 - 941 MHz
H01WCF4PW1BN 16-Mode, 14-Character Front Display, Limited Keypad, 2.9 Watt, 896 - 941 MHz
H01WCH4PW1BN 16-Mode, 14-Character Front Display, Full Keypad, 2.9 Watt, 896 - 941 MHz
CONVENTIONAL SYSTEMS RADIOS
PRIVATE SYSTEMS RADIOS 
						

							vi
LIST OF MODELS (cont.)
LIST OF ANTENNAS AND BATTERIES
MTX 838 Model Family
H01KDC9DB3AN 16-Mode, 5- to 1-Watt, 136 - 178 MHz
H01KDD9DB4AN 99-Mode, 6-Character Top Display, 5- to 1-Watt, 136 - 178 MHz
H01KDF9DB5AN 160-Mode, 14-Character Front Display, Limited Keypad, 5- to 1-Watt, 136 - 178 MHz
H01KDH9DB7AN 160-Mode, 4-Character Front Display, Full Keypad, 5- to 1-Watt, 136 - 178 MHz
H01RDC9DB3AN 16-Mode, 4- to 1-Watt, 403 - 470 MHz
H01RDD9DB4AN 99-Mode, 6-Character Top Display, 4- to 1-Watt, 403 - 470 MHz
H01RDF9DB5AN 160-Mode, 14-Character Front Display, Limited Keypad, 4- to 1-Watt, 403 - 470 MHz
H01RDH9DB7AN 160-Mode, 14-Character Front Display, Full Keypad, 4- to 1-Watt, 403 - 470 MHz
H01SDC9DB3AN 16-Mode, 4- to 1-Watt, 450 - 520 MHz
H01SDD9DB4AN 99-Mode, 6-Character Top Display, 4- to 1-Watt, 450 - 520 MHz
H01SDF9DB5AN 160-Mode,14-Character Front Display, Limited Keypad, 5- to 1-Watt, 450 - 520 MHz
H01SDH9DB7AN 160-Mode, 14-Character Front Display,  Full Keypad, 5- to 1-Watt, 450 - 520 MHz
MTX 8000/MTX 838 Model Family
H01UCC6DB3AN 16-Mode, 3-Watt, 806 - 870 MHz, Type I
H01UCD6DB4AN 99-Mode, 3-Watt, 6-Character Top Display, 806 - 870 MHz
H01UCF6DB5AN 160-Mode, 14-Character Front Display, Limited Keypad, 3-Watt, 806 - 870 MHz
H01UCH6DB7AN 160-Mode, 14-Character Front Display, Full Keypad, 3-Watt, 806 - 870 MHz
H01UCC6DF3AN 16-Mode, 3-Watt, 806-870MHz, Type II
MTX 9000 Model Family
H01WCC4DB3AN 16-Mode, 2.9 Watt, 896 - 941 MHz
H01WCD4DB4AN 99-Mode, 2.9 Watt, 6-Character Top Display, 896 - 941 MHz
H01WCF4DB5AN 160-Mode, 14-Character Front Display, Limited Keypad, 2.9 Watt, 896 - 941 MHz
H01WCH4DB7AN 160-Mode, 14-Character Front Display, Full Keypad, 2.9 Watt, 896 - 941 MHz
SHARED SYSTEMS RADIOS
NAD6566
*
Helical (136 - 151MHz)
NAD6567
*
Helical (151 - 162MHz)
NAD6568
*
Helical (162 - 174MHz)
NAD6563
*
Helical Wideband (136 - 174MHz)
NAE6546
*
Helical (403 - 435MHz)
NAE6547
*
Helical (435 - 470MHz)
NAE6548
*
Helical (470 - 512MHz)
NAE6549
*
Whip (403 - 512MHz)
NAF5037
*
Whip (800MHz)
NAF5038
*
Whip (900MHz)
NAF5039
*
Dipole (800MHz)
NAF5040
*
Dipole (900MHz)
NAF5042
*
Quarter Wave, Stubby (800MHz, 900MHz)
NTN7143 High-Capacity Nickel-Cadmium (groups A, B, C, D)
NTN7144 Ultra-High-Capacity Nickel-Cadmium (groups A, B, C, D)
NTN7146
*
High-Capacity Nickel-Cadmium FMRC Intrinsically Safe (groups D, F, G)
NTN7147
*
Ultra-High-Capacity Nickel-Cadmium FMRC Intrinsically Safe (groups D, F, G)
NTN7341
*
Ultra-High-Capacity Nickel-Cadmium FMRC Intrinsically Safe (groups C, D, E,  F, G)
NTN7372
*
High-Capacity Nickel-Cadmium FMRC Intrinsically Safe (groups C, D, E,  F, G)
ANTENNA KIT NOS. DESCRIPTIONBATTERY KIT NOS. DESCRIPTION
* 
These accessories are approved as being intrinsically safe by Factory Mutual Research Corporation (FMRC). Refer to the radio label for
intrinsic safety ratings and required batteries. Only the accessories and antennas noted (by 
*) may be used on approved radios.
!
WARNING
Substitution of components may impair the
intrinsic safety of the radio. 
						

							FCC Designation:    AZ489FT3768
Power Supply: Nickel-Cadmium Battery
Battery Voltage:
Nominal:7.5 Volts
Range:6 to 9 Volts
Battery Drain, Typical:
Standby:56mA
Receive:180mA
Transmit:2100mA
Temperature Range:
Operating:–30°C to +60°C
Storage:–40°C to +85°C
Duty Cycle (5-5-90):1 Watt/5 Watts
High Cap. Battery:11.2 Hrs./8 Hrs.
Ultra-High Cap. Battery:12.9 Hrs./9 Hrs.
Dimensions (H x W x D)
Less Battery:6.30 x 2.34 x 1.49
(16.0cm x 5.9cm x 3.8cm)
With High Cap. Battery:    6.30 x 2.34 x 1.49
(16.0cm x 5.9cm x 3.8cm)
With Ultra-High Cap. Battery:6.30 x 2.34 x 1.54
(16.0cm x 5.9cm x 3.9cm)
Weight:  (w/Helical Antenna)
Less Battery:12.1oz. (343gm)
With High Cap. Battery:20.2oz. (573gm)
With Ultra–High Cap. Battery:21.3oz. (604gm)
MAINTENANCE SPECIFICATIONS FOR VHF RADIOS(All Specifications Are Per Electronic Industries Association (EIA) 316B Unless Otherwise Noted.)
RF Power: 
136-174MHz1-5 Watts
174-178MHz1-4 Watts
Frequency Range:
*136–178MHz
Freq. Stability
(–30 to +60°C;  25°C ref.):± .0005%
Emission (Conducted and Radiated):–66dBw
FM Hum and Noise
(Companion Receiver):–45dB Typical
Distortion:3% Typical
Modulation Limiting:±5kHz
Recommended Battery:
High Capacity:NTN7143
Ultra–High Capacity:NTN7144 Frequency Range:
*136–178MHz
Bandwidth:42MHz
Quieting Sensitivity (20dBQ):0.5µV Max.
Usable Sensitivity
(12dB SINAD):0.35µV Max.
Intermodulation:–70dB
Selectivity
(30kHz Adjacent Channel):–70dB
Spurious Rejection:–70dB 
Freq. Stability
(–30  to +60°C; 25°C reference):± 0.0005%
Rated Audio:500mW
Distortion (At Rated Audio):3% Typical
Channel Spacing:30kHz
GENERAL RECEIVER TRANSMITTER
Specifications Subject to Change Without Notice.
* Frequencies in the 174-178MHz range are not permitted in the USA.
MAINTENANCE SPECIFICATIONS FOR UHF RADIOS
(All Specifications Are Per Electronic Industries Association (EIA) 316B Unless Otherwise Noted.)
RF Power:
403-470MHz1-4 Watts
450-512MHz1-4 Watts
512-520MHz1-3 Watts
Frequency Range:403-470MHz
*450-520MHz
Freq. Stability
(–30 to +60°C;  25°C ref.):± .0005%
Emission (Conducted and Radiated):–66dBw
FM Hum and Noise
(Companion Receiver):–45dBTypical
Distortion:3% Typical
Modulation Limiting:±5kHz
Recommended Battery:
High Capacity:NTN7143
Ultra–High Capacity:NTN7144 Frequency Range:403-470MHz
*450-520MHz
Bandwidth:70MHz
Quieting Sensitivity (20dBQ):0.5µV Max.
Usable Sensitivity
(12dB SINAD):0.35µV Max.
Intermodulation:–70dB
Selectivity
(25kHz Adjacent Channel):–70dB 
Spurious Rejection:
450-512MHz–70dB 
512-520MHz–65dB 
Freq. Stability
(–30  to +60°C; 25°C reference):± 0.0005%
Rated Audio:500mW
Distortion (At Rated Audio):3% Typical
Channel Spacing:25kHz FCC     AZ489FT4781 (403-470MHz)
Designation:AZ489FT4780 (450-520MHz)
Power Supply: Nickel-Cadmium Battery
Battery Voltage:
Nominal:7.5 Volts
Range:6 to 9 Volts
Battery Drain, Typical:
Standby:60mA
Receive:180mA
Transmit:1800mA
Temperature Range:
Operating:–30°C to +60°C
Storage:–40°C to +85°C
Duty Cycle (5-5-90):1 Watt/4 Watts
High Cap. Battery:11 Hrs./8.4 Hrs.
Ultra-High Cap. Battery:12.7 Hrs./9.7 Hrs.
Dimensions (H x W x D)
Less Battery:6.30 x 2.34 x 1.49
(16.0cm x 5.9cm x 3.8cm)
With High Cap. Battery:    6.30 x 2.34 x 1.49
(16.0cm x 5.9cm x 3.8cm)
With Ultra-High Cap. Battery:6.30 x 2.34 x 1.54
(16.0cm x 5.9cm x 3.9cm)
Weight:  (w/Helical Antenna)
Less Battery:12.1oz. (343gm)
With High Cap. Battery:20.2oz. (573gm)
With Ultra–High Cap. Battery:21.3oz. (604gm)
GENERAL RECEIVER TRANSMITTER
Specifications Subject to Change Without Notice.
* Frequencies in the 512-520MHz range are not permitted in the USA.
vii 
						

							viii
MAINTENANCE SPECIFICATIONS FOR 800MHz RADIOS(All Specifications Are Per Electronic Industries Association (EIA) 316B Unless Otherwise Noted.)
RF Power: 3 Watts
Frequency Range:806–824MHz
851–869MHz
Freq. Stability
(–30 to +60°C;  25°C ref.):± .00025%
(821-824MHz Capable):± .00015%
Emission (Conducted and Radiated):–46dBw
FM Hum and Noise
(Companion Receiver):–40dB Typical
Distortion:3% Typical
Modulation Limiting:±5kHz
(821-824MHz):±4kHz
Recommended Battery:
High Capacity:NTN7143
Ultra–High Capacity:NTN7144 Frequency Range:851–870MHz
Bandwidth:19MHz
Quieting Sensitivity (20dBQ):0.5µV Max.
Usable Sensitivity
(12dB SINAD):0.35µV Max.
Intermodulation:–70dB 
Selectivity
(25kHz Adjacent Channel):–70dB 
Spurious Rejection:–70dB 
Freq. Stability
(–30+60°C; 25°C reference):± .00025%
(821-824MHz Capable):±.00015%
Rated Audio:500mW
Distortion (At Rated Audio):3% Typical
Channel Spacing:25kHz FCC Designation:    AZ489FT5747
Power Supply: Nickel-Cadmium Battery
Battery Voltage:
Nominal:7.5 Volts
Range:6 to 9 Volts
Battery Drain, Typical:
Standby:65mA
Receive:190mA
Transmit:1900mA
Temperature Range:
Operating:–30°C to +60°C
Storage:–40°C to +85°C
Duty Cycle (5-5-90):
High Cap. Battery:8 Hours
Ultra-High Cap. Battery:9 Hours
Dimensions (H x W x D)
Less Battery:6.30 x 2.34 x 1.49
(16.0cm x 5.9cm x 3.8cm)
With High Cap. Battery:    6.30 x 2.34 x 1.49
(16.0cm x 5.9cm x 3.8cm)
With Ultra-High Cap. Battery:6.30 x 2.34 x 1.54
(16.0cm x 5.9cm x 3.9cm)
Weight:  (w/Helical Antenna)
Less Battery:12.1oz. (343gm)
With High Cap. Battery:20.2oz. (573gm)
With Ultra–High Cap. Battery:21.3oz. (604gm)
GENERAL RECEIVER TRANSMITTER
Specifications Subject to Change Without Notice.
MAINTENANCE SPECIFICATIONS FOR 900MHz RADIOS(All Specifications Are Per Electronic Industries Association (EIA) 316B Unless Otherwise Noted.)
RF Power:2.9 Watts
Frequency Range:896–902MHz
935–941MHz
Freq. Stability
(–30 to +60°C;  25°C ref.):± .00015%
Emission (Conducted and Radiated):–46dBw
FM Hum and Noise
(Companion Receiver / 
HEAR CLEAR):–45dB Typical
Distortion:3% Typical
Modulation Limiting:±2.5kHz
Recommended Battery:
High Capacity:NTN7143
Ultra–High Capacity:NTN7144 Frequency Range:935–941MHz
Bandwidth:6MHz
Quieting Sensitivity (20dBQ):0.5µV Max.
Usable Sensitivity
(12dB SINAD):0.35µV Max.
Intermodulation:–60dB 
Selectivity
(12.5kHz Adjacent Channel):–60dB 
Spurious Rejection:–60dB 
Freq. Stability
(–30+60°C; 25°C reference):± .00015%
Rated Audio:500mW
Distortion (At Rated Audio):3% Typical
Channel Spacing:12.5kHz FCC Designation:    AZ489FT5748
Power Supply: Nickel-Cadmium Battery
Battery Voltage:
Nominal:7.5 Volts
Range:6 to 9 Volts
Battery Drain, Typical:
Standby:65mA
Receive:185mA
Transmit:1910mA
Temperature Range:
Operating:–30°C to +60°C
Storage:–40°C to +85°C
Duty Cycle (5-5-90):
High Cap. Battery:8 Hours
Ultra-High Cap. Battery:9 Hours
Dimensions (H x W x D)
Less Battery:6.30 x 2.34 x 1.49
(16.0cm x 5.9cm x 3.8cm)
With High Cap. Battery:    6.30 x 2.34 x 1.49
(16.0cm x 5.9cm x 3.8cm)
With Ultra-High Cap. Battery:6.30 x 2.34 x 1.54
(16.0cm x 5.9cm x 3.9cm)
Weight:  (w/Helical Antenna)
Less Battery:12.1oz. (343gm)
With High Cap. Battery:20.2oz. (573gm)
With Ultra–High Cap. Battery:21.3oz. (604gm)
GENERAL RECEIVER TRANSMITTER
Specifications Subject to Change Without Notice. 
						

							This manual includes a model chart, specifications,
fundamental disassembly/reassembly procedures; and
all schematic diagrams, printed circuit board details, flex
circuit diagrams, and several parts lists to completely
cover the HT 1000, MT 2000, MTS 2000,  and MTX
series radios. Hereafter, the text will refer collectively to
these radios as “this family of radios.” For
maintenance/troubleshooting, theory, accessories, and
operation of the radio, refer to the applicable manual
available separately. To help you with your selection, a
list is provided in this manual, titled “RELATED PUBLI-
CATIONS AVAILABLE SEPARATELY.”
Special notices are incorporated into the text, alert-
ing you to safety hazards and suggesting procedures.
These notices are divided and labeled according to the
information they contain so that you can become imme-
diately aware of the type of information being presented.
The three classifications are: 
WARNINGS, CAUTIONS,
and NOTES.NOTE
This is 
an operational procedure, practice, or
condition, etc., which is essential to emphasize.
SECTION I. INTRODUCTION
1
!
CAUTION
This is an operational procedure, practice, or condition,
etc., which may result in damage to the equipment if not
carefully observed.!
WARNING
This is an operational procedure, practice, or condi-
tion, etc., which may result in injury or death if not
carefully observed.