Motorola GP320 Series Operating and installation instructions

Professional Radio
GP Series
UHF (403 - 470MHz)
Service Information
Issue: June 2002

ii
Computer Software Copyrights
The Motorola products described in this manual may include copyrighted Motorola computer programs stored
in semiconductor memories or other media. Laws in the United States and other countries preserve for
Motorola certain exclusive rights for copyrighted computer programs, including the exclusive right to copy or
reproduce in any form, the copyrighted computer program. Accordingly, any copyrighted Motorola computer
programs contained in the Motorola products described in this manual may not be copied or reproduced in
any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola
products shall not be deemed to grant, either directly or by implication, estoppel or otherwise, any license
under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive royalty-
free license to use that arises by operation of law in the sale of a product.

iii
Table of Contents
Chapter 1 MODEL CHART AND TECHNICAL SPECIFICATIONS
1.0 GP320/GP340/GP360/GP380 Model Chart.........................................................1-1
2.0 GP140 Model Chart .............................................................................................1-2
3.0 GP640/GP680 Model Chart .................................................................................1-2
4.0 GP1280 Model Chart ...........................................................................................1-3
5.0 GP240/GP280/GP540/GP580 Model Chart.........................................................1-4
6.0 Technical Specifications ......................................................................................1-5
Chapter 2 THEORY OF OPERATION
1.0 Introduction ..........................................................................................................2-1
2.0 UHF Transmitter ..................................................................................................2-1
2.1 Power Amplifier ..............................................................................................2-1
2.2 Antenna Switch...............................................................................................2-2
2.3 Harmonic Filter ...............................................................................................2-2
2.4 Antenna Matching Network ............................................................................2-2
2.5 Power Control Integrated Circuit (PCIC) ........................................................2-2
3.0 UHF Receiver ......................................................................................................2-3
3.1 Receiver Front-End ........................................................................................2-3
3.2 Receiver Back-End.........................................................................................2-4
3.3 Automatic Gain Control (AGC) .......................................................................2-5
4.0 Frequency Generation Circuit ..............................................................................2-6
4.1 Synthesizer.....................................................................................................2-7
4.2 Voltage Controlled Oscillator (VCO)...............................................................2-8
5.0 Voice Storage (GP1280 Only) ...........................................................................2-10
Chapter 3 TROUBLESHOOTING CHARTS
1.0 Troubleshooting Flow Chart for Receiver (Sheet 1 of 2)......................................3-1
2.0 Troubleshooting Flow Chart for Receiver (Sheet 2 of 2)......................................3-2
3.0 Troubleshooting Flow Chart for Transmitter ........................................................3-3
4.0 Troubleshooting Flow Chart for Synthesizer........................................................3-4
5.0 Troubleshooting Flow Chart for VCO...................................................................3-5

iv
Chapter 4 UHF PCB/SCHEMATICS/PARTS LISTS
1.0 Allocation of Schematics and Circuit Boards .......................................................4-1
1.1 Controller Circuits...........................................................................................4-1
1.2 Voice Storage Facility..................................................................................... 4-1
2.0 UHF PCB 8480450Z03 / Schematics ..................................................................4-3
3.0 UHF PCB 8480450Z03 / PCB 8480587Z01 Parts List ......................................4-11
4.0 UHF PCB 8480587Z01 (GP1280) ..................................................................... 4-15
3.0 UHF PCB 8480587Z01 Parts List .................................................................... 4-11
5.0 UHF PCB 8480587Z01 Voice Storage Parts List (GP1280)..............................4-18
6.0 UHF PCB 8480587Z03 (GP1280) ..................................................................... 4-19
7.0 UHF PCB 8480587Z03 Parts List ..................................................................... 4-28
5.0 UHF PCB 8480587Z03 Voice Storage Parts List (GP1280)..............................4-18
8.0 UHF PCB 8480450Z13/14 Schematics ............................................................. 4-31
9.0 UHF PCB 8480450Z13/14 Parts List ................................................................ 4-40
5.0 UHF PCB 8480450Z13/14 Voice Storage Parts List (GP1280).........................4-18

Chapter 1
MODEL CHART AND TECHNICAL SPECIFICATIONS
1.0 GP320/GP340/GP360/GP380 Model Chart
Professional GP300 Series (UHF)
Model Description
MDH25RDC9AN0_E GP320 UHF 403-470MHz 4W 1-Ch
MDH25RDC9AN3_E GP340 UHF 403-470MHz 4W 16-Ch
MDH25RDF9AN5_E GP360 UHF 403-470MHz 4W 255-Ch
MDH25RDH9AN6_E GP380 UHF 403-470MHz 4W 255-Ch
Item Description
XPMLE4140_ *GP320 UHF Back Cover Kit
X PMLE4137_ *GP340 UHF Back Cover Kit
XPMLE4141_ *GP360 UHF Back Cover Kit
X PMLE4138_ *GP380 UHF Back Cover Kit
X6864110B12 GP320 Basic User Guide
X 6864110B13 GP340 Basic User Guide
X6864110B16 GP360 Basic User Guide
X 6864110B18 GP380 Basic User Guide
XXXX NAE6483_ UHF Whip (403-470 MHz) Antenna
XXXX HNN9008_ Battery, NiMH Standard
x = Indicates one of each is required.
* = Service replacement boards.

1-2 MODEL CHART AND TECHNICAL SPECIFICATIONS
2.0 GP140 Model Chart
3.0 GP640/GP680 Model Chart
Professional GP140 (UHF)
Model Description
MDH25RDC9AA3_E GP140 UHF 403-470 MHz 4W 16 Ch
Item Description
XPMLE4130_ *GP140 UHF Back Cover Kit
X 6864110B25 GP140 Basic User Guide
XNAE6483_ UHF Whip (403-470 MHz) Antenna
X HNN9008_ Battery, NiMH Standard
x = Indicates one of each is required.
* = Service replacement boards.
Professional GP600 Series (UHF)
Model Description
MDH25RDC9CK3_E GP640 UHF 403-470 MHz 4W
MDH25RDH9CK6_E GP680 UHF 403-470 MHz 4W
Item Description
XPMLE4133_ *GP640 UHF Back Cover Kit
X PMLE4134_ *GP680 UHF Back Cover Kit
X6864110B14 GP640 Basic User Guide
X 6864110B19 GP680 Basic User Guide
X X NAE6483_ UHF Whip (403-470 MHz) Antenna
X X HNN9008_ Battery, NiMH Standard
x = Indicates one of each is required.
* = Service replacement boards.

GP1280 Model Chart 1-3
4.0 GP1280 Model Chart
Professional GP1280 (UHF)
Model Description
MDH25RDN9CK8_E GP1280 UHF 403-470 MHz 4W
Item Description
XPMLE4142_ *GP1280 UHF Back Cover Kit
X 6864110B20 GP1280 Basic User Guide
XNAE6483_ UHF Whip (403-470 MHz) Antenna
X HNN9008_ Battery, NiMH Standard
x = Indicates one of each is required.
* = Service replacement boards.

1-4 MODEL CHART AND TECHNICAL SPECIFICATIONS
5.0 GP240/GP540/GP280/GP580 Model Chart
One user guide is selectable via option.
x = Indicates one of each is required.
* = Service replacement boards.
Professional GP200/GP500 Series (UHF)
Model Description
MDH25RDC9GC3 GP540 UHF 403-470 MHz 4W
MDH25RDH9GC6 GP580 UHF 403-470 MHz 4W
MDH25RDC9GB3 GP240 UHF 403-470 MHz 4W
MDH25RDH9GB6 GP280 UHF 403-470 MHz 4W
Item Description
X X *PMLE4192_ GP240/GP540 UHF Back Cover Kit
X X *PMLE4193_ GP280/GP580 UHF Back Cover Kit
X X *PMLN4216_ GP240/GP540 UHF Front Housing Kit
X X *PMLN4373_ GP280/GP580 UHF Front Housing Kit
X X 6864120B15 GP240/GP280 User Guide (English)
X X 6864120B16 GP240/GP280 User Guide (ENG, RUS, FR, TUR)
X X 6864120B17 GP240/GP280 User Guide (GER, SPA, POR, IT)
X X 6864120B18 GP240/GP280 User Guide (SWE,NL, DAN, FIN)
X X 6864120B19 GP240/GP280 User Guide (CZ, PL, HU, RO)
X X 6864120B20 GP540/GP580 User Guide (English)
X X 6864120B21 GP540/GP580 User Guide (ENG, RUS, FR, TUR)
X X 6864120B22 GP540/GP580 User Guide (GER, SPA, POR, IT)
X X 6864120B23 GP540/GP580 User Guide (SWE,NL, DAN, FIN)
X X 6864120B24 GP540/GP580 User Guide (CZ, PL, HU, RO)
XXXX NAE6483_ Antenna(403-433MHz)Stubby
XXXX HNN9008_ Battery, NiMH Standard

Technical Specifications 1-5
6.0 Technical Specifications
Data is specified for +25°C unless otherwise stated.
General Specifications
Channel Capacity
GP140
GP240, GP280
GP320
GP340
GP360, GP380
GP540, GP580
GP640, GP680, GP1280
16
128 in conventional Mode
1
16
255
128 in conventional Mode
16 (Conventional)
Power Supply Rechargeable battery 7.5v
Dimensions: H x W x D (mm) Height excluding knobs
With standard high capacity NiMH battery
With ultra high capacity NiMH battery
With NiCD battery
With Lilon battery
GP140/GP240/320/340/360/380/
GP580/640/680
137 x 57.5 x 37.5
137 x 57.5 x 40.0
137 x 57.5 x 40.0
137 x 57.5 x 33.0
With standard high capacity NiMH battery
With ultra high capacity NiMH battery
With NiCD battery
With Lilon battery
GP1280
152 x 57.5 x 37.5
152 x 57.5 x 37.5
152 x 57.5 x 37.5
152 x 57.5 x 37.5
Weight: (gm)
With Standard high capacity NiMH battery
With Ultra high capacity NiMH battery
With NiCD battery
With Lilon battery
GP140/GP240/ GP360/GP280
GP320/GP340/ GP380/GP580
GP540/GP640 GP680
420 428
500 508
450 458
350 358
With Standard high capacity NiMH battery
With Ultra high capacity NiMH battery
With NiCD battery
With Lilon battery
GP1280
460
535
485
390
Average Battery Life @5/5/90 Cycle:
With Standard high capacity NiMH battery
With Ultra high capacity NiMH battery
With NiCD battery
With Lilon battery
Low Power High Power
11 hours 8 hours
14 hours 11 hours
12 hours 9 hours
11 hours 8 hours
Sealing: Withstands rain testing per
MIL STD 810 C/D /E and IP54
Shock and Vibration: Protection provided via impact
resistant housing exceeding MIL STD
810-C/D /E and TIA/EIA 603
Dust and Humidity: Protection provided via environment
resistant housing exceeding MIL STD
810 C/D /E and TIA/EIA 603

1-6 MODEL CHART AND TECHNICAL SPECIFICATIONS
*Availability subject to the laws and regulations of individual countries.
Transmitter UHF
*Frequencies - Full Bandsplit UHF 403-470 MHz
Channel Spacing 12.5/20/25 kHz
Frequency Stability
(-25°C to +55°C, +25°Ref.) ±1.5 ppm
Power 403 - 470 MHz:1-4W
Modulation Limiting
±2.5 @ 12.5 kHz
±4.0 @ 20 kHz
±5.0 @ 25 kHz
FM Hum & Noise -40 dB typical
Conducted/Radiated Emission -36 dBm <1 GHz
-30 dBm >1 GHz
Adjacent Channel Power -60 dB @ 12.5 kHz
-70 dB @ 25 kHz
Audio Response (300 - 3000 Hz) +1 to -3 dB
Audio Distortion <5%typical
Receiver UHF
*Frequencies - Full Bandsplit UHF 403-470 MHz
Channel Spacing 12.5/20/25 kHz
Sensitivity (12 dB SINAD) EIA
Sensitivity (20 dB SINAD) ETS
0.25 µV typical
0.50 µV typical
Intermodulation EIA 65 dB
Adjacent Channel Selectivity 60 dB @ 12.5 kHz
70 dB @ 25 kHz
Spurious Rejection >70 dB
Rated Audio 0.5W
Audio Distortion @ Rated Audio <3%typical
Hum & Noise -45 dB @ 12.5 kHz
-50 dB @ 20/25 kHz
Audio Response (300 - 3000 Hz) +1 to -3 dB
Conducted Spurious Emission
-57 dBm <1 GHz
-47 dBm >1 GHz
ETS 300 086