Motorola Gm300 Basic 68p64115b51 Manual
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Chapter 2 MODEL CHART AND TEST SPECIFICATION 1.0 Model Chart (UHF 403-470 MHz) GM Series UHF 403-470 MHz Model Description MDM25RHC9AN1_EGM340, 403-470 MHz, 1-25W, 6 Ch MDM25RHF9AN5_E GM360, 403-470 MHz, 1-25W, 255 Ch MDM25RHN9AN8_EGM380, 403-470 MHz, 1-25W, 255 Ch Item Description X GCN6112_ Control Head GM340 XGCN6120_Control Head GM360 X GCN6121_ Control Head GM380 XIMUE6015_Tanapa GM340 X IMUE6015_ Tanapa GM360 XIMUE6038_Tanapa GM380 XXXENBN4056_ Packaging,WarisMobile XXXGLN7324_Low Profile Mounting Trunion XXXHKN4137_ 12VPowerCable1-25W XXXMDRMN4025_Enhanced Compact Microphone X 6864110B80 User Guide, GM340 X6864110B81User Guide, GM360 X 6864110B82 User Guide, GM380 X = Indicates one of each is required
2-2 MODEL CHART AND TEST SPECIFICATION 2.0 Model Chart (VHF 136-174 MHz) GM Series VHF 136-174 MHz Model Description MDM25KHC9AN1_EGM340, 136-174 MHz, 1-25W, 6 Ch MDM25KHF9AN5_E GM360, 136-174 MHz, 1-25W, 255 Ch MDM25KHN9AN8_EGM380, 136-174 MHz, 1-25W, 255 Ch Item Description X GCN6112_ Control Head GM340 XGCN6120_Control Head GM360 X GCN6121_ Control Head GM380 XIMUD6013_Tanapa GM340 X IMUD6013_ Tanapa GM360 XIMUD6024_Tanapa GM380 XXXENBN4056_ Packaging,WarisMobile XXXGLN7324_Low Profile Mounting Trunion XXXHKN4137_ 12VPowerCable1-25W XXXMDRMN4025_Enhanced Compact Microphone X 6864110B80 User Guide, GM340 X6864110B81User Guide, GM360 X 6864110B82 User Guide, GM380 X = Indicates one of each is required
Model Chart (Low Band 29-50 MHz)2-3 3.0 Model Chart (Low Band 29-50 MHz) GM Series Low Band 29-50 MHz Model Description MDM25BKF9AN5_EGM360 LB1, 29.0-36.0 MHz, 40-60W, 255 Ch MDM25CKF9AN5_E GM360 LB2, 36.0-42.0 MHz, 40-60W, 255 Ch MDM25DKF9AN5_EGM360 LB3, 42.0-50.0 MHz, 40-60W, 255 Ch Item Description XXXGCN6120_ ControlHead,GM360 XIMUB6003_Tanapa GM360, LB1 X IMUB6004_ Tanapa GM360, LB2 XIMUB6005_Tanapa GM360, LB3 XXXENBN4056_ Packaging,WarisMobile XXXHKN9402_12V Power Cable XXXMDRMN4025_ EnhancedCompactMicrophone XXXRLN4774_3 Point Mount XXX6864110B81_ UserGuide,GM360 X = Indicates one of each is required
2-4 MODEL CHART AND TEST SPECIFICATION 2.4 Specifications General Specification VHF UHF LB1, LB2, LB3 Frequency Range:136-174 MHz403-470 MHz29.7-36.0 MHz 36.0-42.0 MHz 42.0-50.0 MHz Frequency Stability (-30°Cto+60°C, 25°CRef.)±2.5 PPM ±2 PPM ±5.0 PPM Channel Capacity:GM340 - 6 GM360 - 255 GM380 - 255 Channel Spacing: 12.5/20/25 kHz Power Output:1-25W1-25W40-60W Power Supply: 13.2Vdc (10.8 - 15.6 Vdc) negative vehicle ground Dimensions (L X W X H) UHF/VHF 1-25W GM340 GM360 GM380 Low Band 40-60W GM360 177mm X 176mm X 56mm (add 8mm for Volume Knob) (6.97” X 6.93” X 2.2” - add 0.3” for Volume Knob) 186mm X 179mm X 59mm (add 9mm for Volume Knob) (7.32” X 7.05” X 2.34” - add 0.35” for Volume Knob) 188mm X 185mm X 72mm (add 7mm for Volume Knob) (7.4” X 7.28” X 2.83” - add 0.27” for Volume Knob) 250mm X 179mm X 59mm (add 9mm for Volume Knob) (9.8” X 7.05” X 2.34” - add 0.35” for Volume Knob) Weight: Low power (1-25W) High power (40-60W)1400 g (3.15 lbs) 2064 g (4.3 lbs ) Operating Temperature-30to60oC Sealing Passes rain testing to IP54 Shock and VibrationMeets MIL-STD 810-C,D&E and TIA/EIA 603 Dust Meets MIL-STD 810-C,D&E and TIA/EIA 603 HumidityMeets MIL-STD 810-C,D&E and TIA/EIA 603
Specifications2-5 Tr a n s m i t t e r Specification VHF UHF LB1, LB2, LB3 Modulation Limiting: ±2.5 kHz @ 12.5 kHz ±4.0 kHz @ 20 kHz ±5.0 kHz @ 20/25 kHz FM Hum and Noise:[email protected] -45dB@20/25kHz Conducted/Radiated Emissions:-36 dBm < 1 GHz -30 dBm > 1 GHz-26 dBm Adjacent Channel Power-60dB @12.5, -70dB @ 20/25kHz Audio Response: ( 300 to 3000Hz)+1, -3dB Audio Distortion: @ 1000 Hz, 60% Rated Maximum Deviation: 3% Typical Receiver Specification VHF UHF LB1, LB2, LB3 Sensitivity (12dBSINAD): (ETS)0.30µV(0.22µVTypical) Intermodulation : (ETS)>65dB;>70dBinBaseMode>65 dB Adjacent Channel Selectivity: (ETS)80 dB @ 25 kHz 75 dB @ 20 kHz 65 dB @ 12.5 kHz75 dB @ 25 kHz 70 dB @ 20 kHz 65 dB @ 12.5 kHz80 dB @ 25 kHz 75 dB @ 20 kHz 65 dB @ 12.5 kHz Spurious Rejection: (ETS)80 dB @ 20/25 kHz 75 dB @ 12.5 kHz75 dB @ 20/25 kHz 70 dB @ 12.5 kHz80 dB @ 20/25 kHz 75 dB @ 12.5 kHz Rated Audio: (ETS) 3W Internal (GM340/GM360) 13W External Audio Distortion @ Rated Audio:3% Typical Hum and Noise: -40 dB @ 12.5 kHz -45 dB @ 20/25 kHz Audio Response: ( 300 to 3000Hz)+1, -3dB Conducted Spurious Emission per FCC Part 15:-57 dBm 1 GHz
Chapter 3 MAINTENANCE 1.0 Introduction This chapter provides details about the following: Preventive maintenance (inspection and cleaning). Safe handling of CMOS and LDMOS devices. Disassembly and reassembly of the radio. Repair procedures and techniques. Installation of Option Boards. 2.0 Preventive Maintenance The radios do not require a scheduled preventive maintenance program; however, periodic visual inspection and cleaning is recommended. 2.1 Inspection Check that the external surfaces of the radio are clean, and that all external controls and switches are functional. It is not recommended to inspect the interior electronic circuitry. 2.2 Cleaning Procedures The following procedures describe the recommended cleaning agents and the methods to be used when cleaning the external and internal surfaces of the radio. External surfaces include the front cover, housing assembly and battery case. These surfaces should be cleaned whenever a periodic visual inspection reveals the presence of smudges, grease, and/or grime. The only recommended agent for cleaning the external radio surfaces is a 0.5% solution of a mild dishwashing detergent in water. The only factory recommended liquid for cleaning the printed circuit boards and their components is isopropyl alcohol (70% by volume). Cleaning External Plastic Surfaces Apply the 0.5% detergent-water solution sparingly with a stiff, non-metallic, short-bristled brush to work all loose dirt away from the radio. Use a soft, absorbent, lintless cloth or tissue to remove the solution and dry the radio. Make sure that no water remains entrapped near the connectors, cracks, or crevices. NOTEInternal surfaces should be cleaned only when the radio is disassembled for service or repair. CAUTION: The effects of certain chemicals and their vapors can have harmful results on certain plastics. Avoid using aerosol sprays, tuner cleaners, and other chemicals. !
3-2MAINTENANCE Cleaning Internal Circuit Boards and Components Isopropyl alcohol (70%) may be applied with a stiff, non-metallic, short-bristled brush to dislodge embedded or caked materials located in hard-to-reach areas. The brush stroke should direct the dislodged material out and away from the inside of the radio. Make sure that controls or tunable components are not soaked with alcohol. Do not use high-pressure air to hasten the drying process since this could cause the liquid to collect in unwanted places. After completing of the cleaning process, use a soft, absorbent, lintless cloth to dry the area. Do not brush or apply any isopropyl alcohol to the frame, front cover, or back cover. 3.0 Safe Handling of CMOS and LDMOS Devices Complementary metal-oxide semiconductor (CMOS) devices are used in this family of radios, and are susceptible to damage by electrostatic or high voltage charges. Damage can be latent, resulting in failures occurring weeks or months later. Therefore, special precautions must be taken to prevent device damage during disassembly, troubleshooting, and repair. Handling precautions are mandatory for CMOS circuits and are especially important in low humidity conditions. DO NOT attempt to disassemble the radio without first referring to the following CAUTION statement. NOTEAlways use a fresh supply of alcohol and a clean container to prevent contamination by dissolved material (from previous usage). CAUTION: This radio contains static-sensitive devices. Do not open the radio unless you are properly grounded. Take the following precautions when working on this unit: Store and transpor t all CMOS devices in conductive material so that all exposed leads are shorted together. Do not insert CMOS devices into conventional plastic “snow” trays used for storage and transportation of other semiconductor devices. Ground the working surface of the service bench to protect the CMOS device. We recommend using the Motorola Static Protection Assembly (part number 0180386A82), which includes a wrist strap, two ground cords, a table mat, and a floor mat. Wear a conductive wrist strap in series with a 100k resistor to ground. (Replacement wrist straps that connect to the bench top covering are Motorola part number RSX4015_.) Do not wear nylon clothing while handling CMOS devices. Do not insert or remove CMOS devices with power applied. Check all power supplies used for testing CMOS devices to be certain that there are no voltage transients present. When straightening CMOS pins, provide ground straps for the apparatus used. When soldering, use a grounded soldering iron. If at all possible, handle CMOS devices by the package and not by the leads. Prior to touching the unit, touch an electrical ground to remove any static charge that you may have accumulated. The package and substrate may be electrically common. If so, the reaction of a discharge to the case would cause the same damage as touching the leads. !
Repair Procedures and Techniques — General 3-3 4.0 Repair Procedures and Techniques — General Parts Replacement and Substitution When damaged parts are replaced, identical parts should be used. If the identical replacement par t is not locally available, check the parts list for the proper Motorola part number and order the part from the nearest Motorola Communications par ts center listed in the “Piece Parts” section of this manual. Rigid Circuit Boards This family of radios uses bonded, multi-layer, printed circuit boards. Since the inner layers are not accessible, some special considerations are required when soldering and unsoldering components. The printed-through holes may interconnect multiple layers of the printed circuit. Therefore, exercise care to avoid pulling the plated circuit out of the hole. When soldering near the 20-pin and 40-pin connectors: Avoid accidentally getting solder in the connector. Be careful not to form solder bridges between the connector pins. Examine your work closely for shorts due to solder bridges. 5.0 Disassembling and Reassembling the Radio — General Since these radios may be disassembled and reassembled with the use of only four (board to casting) screws, it is important to pay particular attention to the snaps and tabs, and how parts align with each other. The following tools are required for disassembling the radio: Small flat blade screwdriver Dismantling Tool (Motorola Part No. 6686119B01) TORX™ T20 screwdriver If a unit requires more complete testing or service than is customarily performed at the basic level, send this unit to a Motorola Authorized Service Center. (See Chapter 1 for a list of authorized service centers.) The following disassembly procedures should be performed only if necessary:
3-4MAINTENANCE 6.0 Radio Disassembly - Detailed The procedure to remove and replace a Control Head, Top Cover or Transceiver Board is similar for all models of radio. A typical procedure is therefore shown followed by specific disassembly procedures for Control Heads on radio models without a display and radio models fitted with a display. 6.1 Control Head Removal 1. Inser t the dismantling tool in the groove between the control head and the radio assembly as showninFigure3-1. 2. Press on the dismantling tool until the snap connectors on the side of the control head release from the radio assembly. Figure 3-1Typical Control Head Removal. 3. Pull the control head away from the radio assembly as shown in Figure 3-2. Dismantling To o l ZWG0130209-O