Motorola GP644 User Manual
Specifi cation Sheet
GP644
Communication Made Easy.
The compact GP644, one of the market-leading radios in
Motorola’s Professional Series, is a simple communication
solution for portable users on MPT networks requiring a
highquality radio. The GP644 is simple to use; featuring
essential functionality to effi ciently keep users in touch.
With a wide range of accessories available within the Professional Series;
it’s easy to build a tailored communications solution to meet your needs.
Key Features
Signalling
• Fully compliant to MP T13 27
• Includes MPT134 3, RegioNet 43
and AN N dialling p lan
Easy to use and set-up
• Compac t model for greater portabilit y
• Programmable but tons for easy access to
frequently used features
• Quick access to call sel ection
• Ruggedised design
Quality
• MIL Spec 810 compliant
• Meet s IP5 4 environmental standards
• Passed M oto rola A ccelerated Life Test
• X-Pand™ voice compression technology
Effi ciency
• Missed call alerts
• Dynamic regrouping for over the air con guration
• Talk Group Sel ect Mode
Included as standard
• Batter y
• Antenna
• Belt c lip
• Accessory dust cover
• User manual
Accessory options
A wide range of accessory options are
available to customise your radio
• Audio accessories
• Batteries and chargers
• Carr y options
For full details of available accessories,
ple ase co ntact your loc al dealer or distr ibutor
Specification Sheet
GENERAL SPECIFICATIONS TRANSMITTER
Power Supply Rechargeable battery 7.5V
Dimensions H x W x D (mm) with: Height excluding knobs
Li-Ion battery 101.5 x 55.5 x 30.5
High capacity Li-Ion battery 101.5 x 55.5 x 35.5
Weight (gm) with:
Li-Ion battery 250
High capacity Li-Ion battery 270
Average battery life @ 5/5/90 Cycle with: Low Power High Power
Li-Ion battery >9 hours >7 hours
High capacity Li-Ion battery >13 hours >10 hours
Sealing: Withstands rain testing per MIL STD 810 and IP54
Shock and Vibration: Protection provided via impact resistant housing
exceeding MIL STD 810 and TIA/EIA 603
Dust and Humidity: Protection provided via environment resistant
housing exceeding MIL STD 810 and TIA/EIA 603
Operating temperature: -30
o
C to +60oC
Storage temperature: -40oC to +85oC
*Frequencies - Full Bandsplit UHF: 403-470 MHz
Channel Spacing 12.5 / 20 / 25 kHz
Frequency Stability 1.5 kHz @ 12.5 kHz
o
(-30
C to +60oC, +25oC Ref.) 2.0 kHz @ 20/25 kHz
Power 403-470: 1-4W
Modulation Limiting ±2.5 @ 12.5 kHz
±4.0 @ 20 kHz
±5.0 @ 25 kHz
Conducted/Radiated Emission -36 dBm <1 GHz
-30 dBm ≥ 1...4 GHz
Adjacent Channel Power -60 dB @ 12.5 kHz
-70 dB @ 20/25 kHz
RECEIVER
*Frequencies - Full Bandsplit UHF1: 403-470 MHz
Channel Spacing 12.5 / 20 / 25 kHz
Sensitivity (20 dB SINAD) 0.50 μV typical /
12.5 kHz
Intermodulation 65 dB
Adjacent Channel Selectivity 60 dB @ 12.5 kHz
70 dB @ 20/25 kHz
Spurious Rejection 70 dB
Conduncted Spurious Emission -57 dBm <1 GHz
-47 dBm ≥ 1...4 GHz
Portable Military Standards 810
Ap pli cable MIL-S TD
Low Pressure 50 0.1 I 50 0.2 II 50 0.3 II 500.4 II 505.5 II
High Temperature 50 1.1 I, I I 501. 2 I/ A1,I I/ A1 501. 3 I/ A1,I I/A1 501. 4 I/Hot,II/Hot 5 01.5
Low Temperature 5 02 .1 I 502.2 I/C3,II/C1 502.3 I/C3,II/C1 502.4 I/C3,II/C1 502.5 I/C 3,II/C1
Temp. Shock 50 3.1 - 503. 2 I/ A1C3 503.3 I/C 1A3 50 3.4 I 503.5 I/C
Solar Radiation 50 5.1 II 5 05.2 I 505.3 I 505.4 I 505.5 I
Rain 5 06 .1 I, II 506.2 I, I I 506.3 I, I I 506.4 I, III 506.5 I, III
Humidity 50 7.1 II 5 07.2 II 5 07.3 II 5 07. 4 - 5 07.5 -
Salt Fog 509 .1 - 5 09.2 - 50 9.3 - 509.4 - 509.5 -
Blowing Dust 510 .1 I 510. 2 I 510 .3 I 510.4 I 510. 5 I
Blowing Sand - - 510. 2 II 510.3 II 510.4 II 510 .5 II
Vibration 514.2
Shock 516.2 I , II 516 .3 I, IV 516. 4 I, IV 516. 5 I, IV 516.6 I, I V
Dat a is spe cied f or +25° C unles s other wise s tated
* Availa bilit y subje ct to ind ividu al coun try’s l aw and re gulat ions. S pecifi catio ns are su bject t o chang e with out noti ce and a re
issu ed for g uidan ce only. A ll spe cica tions l isted a re typ ical. R adios m eet app licab le regu lator y requi rement s. Conf orms to
R&TTE directive 1999/5/EC
810C
Met ho ds P roc ./Cat.
VIII/F,
Curve -W
810D
Met ho ds P roc ./Ca t.
514.3 I/10,II/3 514.4 I/10,II/3 514. 5 I/24 514.6 I/24
810E
Met ho ds P roc ./Cat.
810F
Met ho ds P roc ./Ca t.
Met ho ds P roc ./Cat.
810G
I/H ot A1,
II /H ot (A1)
MOTOROLA and the Stylised M Logo are registered in the US Patent & Trademark Ofce. All other product or service
names are the property of their respective owners. © Motorola, Inc. 2009. All rights reserved . Specications subject to
change without notice. All specications shown are typical. Radio meets applicable regulatory requirements.
GP644-RE_UK(12/09)
For more information please contact your local Motorola Authorised Dealer or Distributor
www.motorola.com
Motorola, Ltd. Jays Close, Viables Industrial Estate,
Basingstoke, Hampshire, RG22 4PD, UK
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