User Manual
Page 36
... VHF 136-155 MHz 9 cm, Stubby VHF 155-174 MHz 9 cm, Stubby VHF 136-155 MHz 14 cm, Standard Length VHF 155-174 MHz 14 cm, Standard Length VHF 162-174MHz, Stubby VHF 150-161 MHz VHF 150-161 MHz, Stubby UHF 403-433 MHz UHF 433-470 MHz UHF 403-520 MHz, Whip UHF 470-510 MHz UHF 490-527 MHz UHF...
... VHF 136-155 MHz 9 cm, Stubby VHF 155-174 MHz 9 cm, Stubby VHF 136-155 MHz 14 cm, Standard Length VHF 155-174 MHz 14 cm, Standard Length VHF 162-174MHz, Stubby VHF 150-161 MHz VHF 150-161 MHz, Stubby UHF 403-433 MHz UHF 433-470 MHz UHF 403-520 MHz, Whip UHF 470-510 MHz UHF 490-527 MHz UHF...
Service Manual
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vi 6.3 Error Codes - PassPort 6-3 6.4 Operation Display Codes 6-3 Chapter 7 Accessories 7-1 7.1 HT750/HT1250/HT1250•LS/HT1250•LS+/HT1550•XLS/MTX850/MTX950/ MTX850•LS/MTX8250/MTX9250/MTX8250•LS ... Test Specifications 8-1 8.1 UHF 403-470 MHz (Conventional 8-1 8.2 UHF 450-512 MHz (Conventional 8-2 8.3 UHF 403-470 MHz (LTR and PassPort 8-3 8.4 UHF 450-512 MHz (LTR and PassPort 8-4 8.5 UHF 403-470 MHz (Conventional/LTR 8-5 8.6 UHF 450-512 MHz (Conventional/LTR 8-6 8.7 VHF 136-174 MHz 8-7 8.8 VHF 136-174 MHz (Conventional/LTR 8-8 8.9 VHF, 136-174 MHz (LTR...
vi 6.3 Error Codes - PassPort 6-3 6.4 Operation Display Codes 6-3 Chapter 7 Accessories 7-1 7.1 HT750/HT1250/HT1250•LS/HT1250•LS+/HT1550•XLS/MTX850/MTX950/ MTX850•LS/MTX8250/MTX9250/MTX8250•LS ... Test Specifications 8-1 8.1 UHF 403-470 MHz (Conventional 8-1 8.2 UHF 450-512 MHz (Conventional 8-2 8.3 UHF 403-470 MHz (LTR and PassPort 8-3 8.4 UHF 450-512 MHz (LTR and PassPort 8-4 8.5 UHF 403-470 MHz (Conventional/LTR 8-5 8.6 UHF 450-512 MHz (Conventional/LTR 8-6 8.7 VHF 136-174 MHz 8-7 8.8 VHF 136-174 MHz (Conventional/LTR 8-8 8.9 VHF, 136-174 MHz (LTR...
Service Manual
Page 36
...16 HT1550•XLS Exploded View Parts List Table 3-8. HT1550•XLS Parts List Item Motorola Part Number 1 See Section 7 in manual 44 HLN9714 Description Backup Battery Screw Contact, Finger (For UHF) Ctrl/RF Board Assembly Flex, Keypad/Controller Insulator, Antenna Pad, Thermal Seal, Contact... Label, Warning Gasket, O-Ring Contact, Ground (For VHF) Chassis Shroud, Chassis Battery Beltclip HT1550•XLS Parts List (Continued) Item Motorola Part Number 30 ...
...16 HT1550•XLS Exploded View Parts List Table 3-8. HT1550•XLS Parts List Item Motorola Part Number 1 See Section 7 in manual 44 HLN9714 Description Backup Battery Screw Contact, Finger (For UHF) Ctrl/RF Board Assembly Flex, Keypad/Controller Insulator, Antenna Pad, Thermal Seal, Contact... Label, Warning Gasket, O-Ring Contact, Ground (For VHF) Chassis Shroud, Chassis Battery Beltclip HT1550•XLS Parts List (Continued) Item Motorola Part Number 30 ...
Service Manual
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... 0180305G54. Provides for the item listed. AARKN4073 Radio to Radio Cloning Cable Allows radio to be substituted for troubleshooting of equipment (800 MHz radios). NOTE: While all of these items are available from Motorola, most are standard shop equipment items, and any equivalent item capable of equipment (VHF and UHF, B1 only). 5880313B69 SMA to BNC adapter...
... 0180305G54. Provides for the item listed. AARKN4073 Radio to Radio Cloning Cable Allows radio to be substituted for troubleshooting of equipment (800 MHz radios). NOTE: While all of these items are available from Motorola, most are standard shop equipment items, and any equivalent item capable of equipment (VHF and UHF, B1 only). 5880313B69 SMA to BNC adapter...
Service Manual
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...; 1 mV to 300 V • 10 MΩ input impedance Dual-trace Oscillo- 20 MHz bandwidth, scope 5 mV/cm - 20 V/cm Wattmeter, Plug-in Elements (VHF & UHF), RF Dummy Load • 50 Ω • ±5% accuracy 10 W, max. 0-1000 MHz, 300 W RF Millivolt Meter 100 µV to 3 VRF, 10... kHz to service the HT750/HT1250/HT1250•LS/HT1250•LS+/ HT1550•XLS/MTX850/MTX950/MTX850•LS/MTX8250/MTX9250/MTX8250•LS radios. Table 3-12:Recommended Test Equipment Motorola Part No. 3-36 Test Equipment 3.10 Test Equipment Table 3-12 lists...
...; 1 mV to 300 V • 10 MΩ input impedance Dual-trace Oscillo- 20 MHz bandwidth, scope 5 mV/cm - 20 V/cm Wattmeter, Plug-in Elements (VHF & UHF), RF Dummy Load • 50 Ω • ±5% accuracy 10 W, max. 0-1000 MHz, 300 W RF Millivolt Meter 100 µV to 3 VRF, 10... kHz to service the HT750/HT1250/HT1250•LS/HT1250•LS+/ HT1550•XLS/MTX850/MTX950/MTX850•LS/MTX8250/MTX9250/MTX8250•LS radios. Table 3-12:Recommended Test Equipment Motorola Part No. 3-36 Test Equipment 3.10 Test Equipment Table 3-12 lists...
Service Manual
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...five times in succession. 3. Press 'side button 2' for a four-line display radio. 4. Therefore, the internal microcontroller does not key the transmitter or unmute the receiver. Note 1: On VHF/UHF, LTR models, the radio must be in compliance with few exceptions. Within ten seconds after the self test ...FPA entry selected and RF TEST not selected blocks RF test mode. The next 'side button 1' press turns on . 2. Turn the radio on the first icon. Press 'side button 1' to scroll through their manufacturing process by utilizing high accuracy laboratory-quality test equipment. The ...
...five times in succession. 3. Press 'side button 2' for a four-line display radio. 4. Therefore, the internal microcontroller does not key the transmitter or unmute the receiver. Note 1: On VHF/UHF, LTR models, the radio must be in compliance with few exceptions. Within ten seconds after the self test ...FPA entry selected and RF TEST not selected blocks RF test mode. The next 'side button 1' press turns on . 2. Turn the radio on the first icon. Press 'side button 1' to scroll through their manufacturing process by utilizing high accuracy laboratory-quality test equipment. The ...
Service Manual
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... in Table 4-1and Table 4-1. Note: On UHF LTR models, radios must be in Figure 4-1 on page 4-3. Table 4-4: Test Frequencies (Using the Channel Selector Switch) Channel Selector Switch Test Channel Low 1 Low 2 VHF UHF 1 UHF 2 800 Position 1 Low Power TX #1 or #8 8 High Power RX #1 or #8 2 Low Power TX #2 or #9 9 High Power RX #2 or #9 3 Low Power 10 High Power TX #3 or #10...
... in Table 4-1and Table 4-1. Note: On UHF LTR models, radios must be in Figure 4-1 on page 4-3. Table 4-4: Test Frequencies (Using the Channel Selector Switch) Channel Selector Switch Test Channel Low 1 Low 2 VHF UHF 1 UHF 2 800 Position 1 Low Power TX #1 or #8 8 High Power RX #1 or #8 2 Low Power TX #2 or #9 9 High Power RX #2 or #9 3 Low Power 10 High Power TX #3 or #10...
Service Manual
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...to OFF (center), meter selection to Audio PA, speaker/load to speaker As above Frequency error to be ±200 Hz VHF ±600 Hz UHF ±60 Hz Low Band Set volume control to 3.16Vrms Distortion 3.0% Typical RF input to be tested) RF level set to a conventional system. Transceiver ... deviation Monitor: DVM: AC Volts Distortion As above, except to Chapter 5, Figure 5-1 on page 5-2, for 12dB SINAD. Raise RF level from zero until radio unsquelches. * see Table 4-4 TEST MODE, Test Channel 4 carrier squelch out- put at 77°F(25°C) and in Table 4-5 and Table 4-6 ...
...to OFF (center), meter selection to Audio PA, speaker/load to speaker As above Frequency error to be ±200 Hz VHF ±600 Hz UHF ±60 Hz Low Band Set volume control to 3.16Vrms Distortion 3.0% Typical RF input to be tested) RF level set to a conventional system. Transceiver ... deviation Monitor: DVM: AC Volts Distortion As above, except to Chapter 5, Figure 5-1 on page 5-2, for 12dB SINAD. Raise RF level from zero until radio unsquelches. * see Table 4-4 TEST MODE, Test Channel 4 carrier squelch out- put at 77°F(25°C) and in Table 4-5 and Table 4-6 ...
Service Manual
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... check) As above As above Frequency error ±200 Hz VHF ±600 Hz UHF ±60 Hz Low Band Refer to Specifications Press PTT switch on radio. Measure deviation: VHF, UHF, 800 MHz, Low 1 and Low 2: ≥ 4.0 kHz but ≤ 5.0 kHz (25 kHz Ch Sp) Deviation: VHF, UHF, 800 MHz, Low 1 and Low 2 ≥ 4.0 kHz but ≤ 5.0 kHz (25 kHz Ch Sp...
... check) As above As above Frequency error ±200 Hz VHF ±600 Hz UHF ±60 Hz Low Band Refer to Specifications Press PTT switch on radio. Measure deviation: VHF, UHF, 800 MHz, Low 1 and Low 2: ≥ 4.0 kHz but ≤ 5.0 kHz (25 kHz Ch Sp) Deviation: VHF, UHF, 800 MHz, Low 1 and Low 2 ≥ 4.0 kHz but ≤ 5.0 kHz (25 kHz Ch Sp...
Service Manual
Page 61
... MHz (Red Code) 14 cm. Helical, Standard Length - 155-174 MHz (Black Code) 14 cm. Helical, Standard Length -150-161 MHz PMAD4025 UHF 1 PMAE4002 PMAE4003 NAE6483 UHF 2 PMAE4006 150-161 MHz, Stubby 403-470 MHz, Ferrule Connector 403-433 MHz, Stubby 433-470 MHz, Stubby 403-520 MHz, Flexible Whip 450... 806-870 MHz, Half Wave Whip 896-902/935-941, SMA Connector 896-941 MHz, Whip 806-941 MHz, Quarter Wave Stubby 7-1 Chapter 7 Accessories 7.1 HT750/HT1250/HT1250•LS/HT1250•LS+/HT1550•XLS/MTX850/ MTX950/MTX850•LS/MTX8250/MTX9250/MTX8250•LS Accessories 7.1.1 Antennas...
... MHz (Red Code) 14 cm. Helical, Standard Length - 155-174 MHz (Black Code) 14 cm. Helical, Standard Length -150-161 MHz PMAD4025 UHF 1 PMAE4002 PMAE4003 NAE6483 UHF 2 PMAE4006 150-161 MHz, Stubby 403-470 MHz, Ferrule Connector 403-433 MHz, Stubby 433-470 MHz, Stubby 403-520 MHz, Flexible Whip 450... 806-870 MHz, Half Wave Whip 896-902/935-941, SMA Connector 896-941 MHz, Whip 806-941 MHz, Quarter Wave Stubby 7-1 Chapter 7 Accessories 7.1 HT750/HT1250/HT1250•LS/HT1250•LS+/HT1550•XLS/MTX850/ MTX950/MTX850•LS/MTX8250/MTX9250/MTX8250•LS Accessories 7.1.1 Antennas...
Service Manual
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...only Charger Insert Spacer - Includes microphone and can be used with a mobile antenna. (For HT Professional Series Conventional and LTR radios). 1500 mAH NiMH High Capacity Battery (Standard With Unit) 1900 mAH NiMH Ultra High Capacity Battery 1800 mAH NiMH Ultra High ... (For HT Professional Series Conventional, LTR, and PassPort radios). Includes microphone and can be used with BDN6706 or BDN6646) Dust Cover for Multi-unit Charger Vehicular Adapter-UHF (403-470 MHz) provides tri-chemistry charging. Vehicular Adapter-VHF (136-174 MHz) provides tri-chemistry charging. Accessories 7-3...
...only Charger Insert Spacer - Includes microphone and can be used with a mobile antenna. (For HT Professional Series Conventional and LTR radios). 1500 mAH NiMH High Capacity Battery (Standard With Unit) 1900 mAH NiMH Ultra High Capacity Battery 1800 mAH NiMH Ultra High ... (For HT Professional Series Conventional, LTR, and PassPort radios). Includes microphone and can be used with BDN6706 or BDN6646) Dust Cover for Multi-unit Charger Vehicular Adapter-UHF (403-470 MHz) provides tri-chemistry charging. Vehicular Adapter-VHF (136-174 MHz) provides tri-chemistry charging. Accessories 7-3...
Service Manual
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...6881088C22 Voice Storage User Manual AAENLN4150* Mandown board for Standard and Noise Cancelling AAHKN9057 VHF Public Safety Speaker Microphone with manual (148-174 MHz Only) - FM Approved AAHMN9054 UHF Public Safety Microphone Remote Speaker (450-470 MHz Only) - FM Approved 6881088C12 ...MTX850/MTX8250/MTX850•LS/MTX8250•LS Basic Service Manual English 7.1.14 Retrofit Front Cover Kits HLN9984 DTMF Retrofit Kit (HT750 only) - 16 Channel Model Only FM Approved AAHMN9053 Remote Speaker Noise Cancelling Microphone - FM Approved AAHKN9055 Replacement Cable for ...
...6881088C22 Voice Storage User Manual AAENLN4150* Mandown board for Standard and Noise Cancelling AAHKN9057 VHF Public Safety Speaker Microphone with manual (148-174 MHz Only) - FM Approved AAHMN9054 UHF Public Safety Microphone Remote Speaker (450-470 MHz Only) - FM Approved 6881088C12 ...MTX850/MTX8250/MTX850•LS/MTX8250•LS Basic Service Manual English 7.1.14 Retrofit Front Cover Kits HLN9984 DTMF Retrofit Kit (HT750 only) - 16 Channel Model Only FM Approved AAHMN9053 Remote Speaker Noise Cancelling Microphone - FM Approved AAHKN9055 Replacement Cable for ...
Service Manual
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... Chapter 8 Model Chart and Test Specifications 8.1 UHF 403-470 MHz (Conventional) HT Series, UHF, 403-470 MHz Model Description AAH25RDC9AA2_N HT750, 403-470 MHz, 4W, 4-Ch AAH25RDC9AA3_N HT750, 403-470 MHz, 4W, 16-Ch AAH25RDG9AA4_N HT750, 403-470 MHz, 4W, 16-Ch, DTMF...HT750 Back Cover Kit HT1250 Back Cover Kit HT1250 Back Cover Kit HT750 Front Housing Kit HT1250 Front Housing Kit (Full Keypad) HT750 Front Housing Kit (Keypad) HT1250 Front Housing Kit (Limited Keypad) Whip Antenna (403-520 MHz) HT750 User Guide HT1250 User Guide Note: Models ending in FD are Federal Government Radios...
... Chapter 8 Model Chart and Test Specifications 8.1 UHF 403-470 MHz (Conventional) HT Series, UHF, 403-470 MHz Model Description AAH25RDC9AA2_N HT750, 403-470 MHz, 4W, 4-Ch AAH25RDC9AA3_N HT750, 403-470 MHz, 4W, 16-Ch AAH25RDG9AA4_N HT750, 403-470 MHz, 4W, 16-Ch, DTMF...HT750 Back Cover Kit HT1250 Back Cover Kit HT1250 Back Cover Kit HT750 Front Housing Kit HT1250 Front Housing Kit (Full Keypad) HT750 Front Housing Kit (Keypad) HT1250 Front Housing Kit (Limited Keypad) Whip Antenna (403-520 MHz) HT750 User Guide HT1250 User Guide Note: Models ending in FD are Federal Government Radios...
Service Manual
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...UHF 450-512 MHz (Conventional) HT Series, UHF, 450-512 MHz Model Description AAH25SDC9AA2_N HT750, 450-512 MHz, 4W, 4-Ch AAH25SDC9AA3_N HT750, 450-512 MHz, 4W, 16-Ch AAH25SDG9AA4_N HT750...HT750, 450-512 MHz, 4W, 4-Ch AAH25SDC9AA3_NFD HT750, 450-512 MHz, 4W, 16-Ch AH25SDG9AA4_NFD HT750...X X 6881088C38 x = Indicates one of each is required. HT750 Back Cover Kit HT750 Back Cover Kit HT750 Back Cover Kit HT1250 Back Cover Kit HT1250 Back Cover Kit ...HT750 Front Housing Kit HT1250 Front Housing Kit (Full Keypad) HT1250 Front Housing Kit (Limited Keypad) Whip Antenna (403-520 MHz) HT750...
...UHF 450-512 MHz (Conventional) HT Series, UHF, 450-512 MHz Model Description AAH25SDC9AA2_N HT750, 450-512 MHz, 4W, 4-Ch AAH25SDC9AA3_N HT750, 450-512 MHz, 4W, 16-Ch AAH25SDG9AA4_N HT750...HT750, 450-512 MHz, 4W, 4-Ch AAH25SDC9AA3_NFD HT750, 450-512 MHz, 4W, 16-Ch AH25SDG9AA4_NFD HT750...X X 6881088C38 x = Indicates one of each is required. HT750 Back Cover Kit HT750 Back Cover Kit HT750 Back Cover Kit HT1250 Back Cover Kit HT1250 Back Cover Kit ...HT750 Front Housing Kit HT1250 Front Housing Kit (Full Keypad) HT1250 Front Housing Kit (Limited Keypad) Whip Antenna (403-520 MHz) HT750...
Service Manual
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...-470 MHz (LTR and PassPort) HT Series, UHF, 403-470 MHz (LTR & PassPort) Model Description AAH25RDH9DP7_N AAH25RDH9DP9_N HT1250•LS+, LTR/PassPort, LTD KPD, MDC/Conventional HT1250•LS+, LTR/PassPort, DTMF, MDC/...
...-470 MHz (LTR and PassPort) HT Series, UHF, 403-470 MHz (LTR & PassPort) Model Description AAH25RDH9DP7_N AAH25RDH9DP9_N HT1250•LS+, LTR/PassPort, LTD KPD, MDC/Conventional HT1250•LS+, LTR/PassPort, DTMF, MDC/...
Service Manual
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... MHz (LTR and PassPort) Model Chart and Test Specifications HT Series, UHF, 450-512 MHz (LTR & PassPort) Model Description AAH25SDH9DP7_N AAH25SDH9DP9_N HT1250•LS+, LTR/PassPort, LTD KPD, MDC/Conventional HT1250•LS+, LTR/PassPort, DTMF, MDC/...
... MHz (LTR and PassPort) Model Chart and Test Specifications HT Series, UHF, 450-512 MHz (LTR & PassPort) Model Description AAH25SDH9DP7_N AAH25SDH9DP9_N HT1250•LS+, LTR/PassPort, LTD KPD, MDC/Conventional HT1250•LS+, LTR/PassPort, DTMF, MDC/...
Service Manual
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Model Chart and Test Specifications 8-5 8.5 UHF 403-470 MHz (Conventional/LTR) HT Series, UHF, 403-470 MHz (Conventional/LTR) Model Description AAH25RDN9DU8_N HT1550•XLS, 403-470 MHz, 4 Watt, 160 Channel Item Description X PMLE4215 HT1550•XLS Back Cover Kit (403-470 MHz) X PMLN4218 HT1550•XLS Front Housing Kit X NAE6483 Whip Antenna (403-520 MHz) X 6881093C95 HT1550•XLS User Guide x = Indicates one of each is required.
Model Chart and Test Specifications 8-5 8.5 UHF 403-470 MHz (Conventional/LTR) HT Series, UHF, 403-470 MHz (Conventional/LTR) Model Description AAH25RDN9DU8_N HT1550•XLS, 403-470 MHz, 4 Watt, 160 Channel Item Description X PMLE4215 HT1550•XLS Back Cover Kit (403-470 MHz) X PMLN4218 HT1550•XLS Front Housing Kit X NAE6483 Whip Antenna (403-520 MHz) X 6881093C95 HT1550•XLS User Guide x = Indicates one of each is required.
Service Manual
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8-6 Model Chart and Test Specifications 8.6 UHF 450-512 MHz (Conventional/LTR) HT Series, UHF, 450-512 MHz (Conventional/LTR) Model Description AAH25SDN9DU8_N HT1550•XLS, 450-512 MHz, 4 Watt, 160 Channel Item Description X PMLE4216 HT1550•XLS Back Cover Kit (450-512 MHz) X PMLN4218 HT1550•XLS Front Housing Kit X NAE6483 Whip Antenna (403-520 MHz) X 6881093C95 HT1550•XLS User Guide x = Indicates one of each is required.
8-6 Model Chart and Test Specifications 8.6 UHF 450-512 MHz (Conventional/LTR) HT Series, UHF, 450-512 MHz (Conventional/LTR) Model Description AAH25SDN9DU8_N HT1550•XLS, 450-512 MHz, 4 Watt, 160 Channel Item Description X PMLE4216 HT1550•XLS Back Cover Kit (450-512 MHz) X PMLN4218 HT1550•XLS Front Housing Kit X NAE6483 Whip Antenna (403-520 MHz) X 6881093C95 HT1550•XLS User Guide x = Indicates one of each is required.
Service Manual
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... . x 2.26 in . x 2.26 in . Model Chart and Test Specifications 8-13 8.14 Specifications, HT750 Radio Specification Model Numbers: Frequency Range: Frequency Stability: (-30°C to +60°C, 25°C Ref.) ... Ultra-High Capacity Battery: With NiCd Battery: With LiIon Battery: General Lowband VHF UHF AAH25BEC AAH25CEC AAH25KDC AAH25KDG AAH25RDC AAH25RDG AAH25SDC AAH25SDG 29.7 - 42.0 MHz 35...ounces (450 grams) 12.5 ounces (350 grams) High Power 8 hours 11 hours 8 hours 7 hours Low Power 11 hours 14 hours 12 hours 11 hours High Power 8 hours 11 hours 9 hours 8 hours ...
... . x 2.26 in . x 2.26 in . Model Chart and Test Specifications 8-13 8.14 Specifications, HT750 Radio Specification Model Numbers: Frequency Range: Frequency Stability: (-30°C to +60°C, 25°C Ref.) ... Ultra-High Capacity Battery: With NiCd Battery: With LiIon Battery: General Lowband VHF UHF AAH25BEC AAH25CEC AAH25KDC AAH25KDG AAH25RDC AAH25RDG AAH25SDC AAH25SDG 29.7 - 42.0 MHz 35...ounces (450 grams) 12.5 ounces (350 grams) High Power 8 hours 11 hours 8 hours 7 hours Low Power 11 hours 14 hours 12 hours 11 hours High Power 8 hours 11 hours 9 hours 8 hours ...
Service Manual
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...radios meet or exceed requirements of MIL STD 810 C, D, E. 8-14 Model Chart and Test Specifications Specification Power Output NiMH @ 7.5V: Spurs/Harmonics: Audio Response: (from 6 dB/oct. Modulation Limiting: Conducted/Radiated Emissions: FM Hum and Noise: Transmitter Lowband 1-6 W VHF 1-5 W -36 dBm < 1GHz -30 dBm > 1 GHz +1 to -3 dB UHF... Channel Selectivity ETS: Spurious Rejection: Rated Audio: Audio Distortion @ Rated Audio: Hum and Noise (with LLE enabled): Receiver Lowband VHF UHF 0.30 µV Typical 0.35 µV Typical 0.5 µV Typical -65 dB 60 dB @ 12.5 kHz 70 dB ...
...radios meet or exceed requirements of MIL STD 810 C, D, E. 8-14 Model Chart and Test Specifications Specification Power Output NiMH @ 7.5V: Spurs/Harmonics: Audio Response: (from 6 dB/oct. Modulation Limiting: Conducted/Radiated Emissions: FM Hum and Noise: Transmitter Lowband 1-6 W VHF 1-5 W -36 dBm < 1GHz -30 dBm > 1 GHz +1 to -3 dB UHF... Channel Selectivity ETS: Spurious Rejection: Rated Audio: Audio Distortion @ Rated Audio: Hum and Noise (with LLE enabled): Receiver Lowband VHF UHF 0.30 µV Typical 0.35 µV Typical 0.5 µV Typical -65 dB 60 dB @ 12.5 kHz 70 dB ...