Motorola HT750 Support Question
Motorola HT750 Support Question
Find answers below for this question about Motorola HT750 - UHF/VHF/Low Band - Radio.Need a Motorola HT750 manual? We have 2 online manuals for this item!
Question posted by roberodriguez on February 21st, 2011
How Can I Reset My Radio. It Goes Directly To The Trnmit Mode When I Turn It On
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Current Answers
Answer #1: Posted by ryan15363 on August 17th, 2011 8:19 AM
ryan15363
Member since:
August 17th, 2011 Points: 120
Member since:
August 17th, 2011 Points: 120
Related Motorola HT750 Manual Pages
User Manual - Page 1
... Cover . . 14
Contents
Turning The Radio On or Off 14 Adjusting the Volume 15 Selecting a Radio Channel 15 Sending a Call 15 Receiving a Call 15 Radio Calls 17 Receiving a Selective Call... 17 Receiving a Call Alert™ Page 17 Sounding an Emergency Siren 17 Repeater or Talkaround Mode...
User Manual - Page 2
...Batteries 26 Battery Information 26 Charging Batteries 26 Recycling of Nickel-Cadmium Batteries. . 27 Intrinsically Safe Radio Information . . . . . 27 FMRC Approved Equipment 27 Repair of Motorola. Accordingly, any ...Motorola products described in this manual may not be deemed to grant either directly or by operation of law in semiconductor memories or other countries preserve for...
User Manual - Page 3
RADIO OVERVIEW
PARTS OF THE RADIO
HT750 Model
Channel Selector Knob
On/Off/Volume Knob
Side Button 1 (A) (programmable)
Push-to-Talk (PTT) Button
Side Button 2 (B) (programmable)
Side Button 3 (C) (programmable)
Radio Overview
Top Button (TB) (programmable)
LED Indicator
Microphone
Front Buttons (optional) (P1, P2, P3) (programmable)
Keypad (optional)
Side Connector
Cover
3 English
RADIO ...
User Manual - Page 5
...or transmitting directly to another radio.†
-
18
Squelch
Toggle squelch level between High and Low.†
-
18
Keypad Lock (for
-
Sound a tone for keypad radios only)
-...selected channel.
-
- Volume Set
- adjusting your
15
radio's volume level. Battery Gauge
-
-
Cancel Emergency Siren.
-
17
Monitor
Turn monitor function off .
off . Check the battery's ...
User Manual - Page 6
... • dialing a phone number • making a radio call .†
- RADIO OVERVIEW
English
Radio Overview
Function
Short Press
Long Press
Hold Down
Option Board
... the microphone 1 to 2 inches (2.5 to listen. Keypad Keys (for radios with keypads)
123 456 789 *0#
These keys are used for keypad radios only)
Turn on the keypad backlight.†
-
† This function is installed)...
Service Manual - Page 16
...;XLS (4-Line Display)
6 25 kHz
4 12.5 kHz
B Low Band, R1 (29.742.0 MHz)
C Low Band, R2 (35.050.0 MHz)
U 800 MHz (806-821)...Radio Model Number (Example: AAH25KDC9AA3AN)
Type of your radio. Band
Power Physical Channel Level Packages Spacing
Protocol
Feature Model Model Level Revision Package
AA or
H
25
K
C
C
9
AA
3
A
N
LA
VHF
1-3.9W
HT750
Programma- 1-4
Introduction
1.3 Radio...
Service Manual - Page 28
...slots. Using a screwdriver, push down on page 3-15).
4. Unless you are secured by turning the screw at the bottom of the dustcover counterclockwise with a two-legged retainer bracket. To replace...pointing toward the top of the radio. Pry the flex circuit (adhesive held in the front cover.
NOTE: The speaker-microphone assembly flex circuit goes through its seated position. If ...
Service Manual - Page 41
Note 1: On VHF/UHF, LTR models, the radio must be in either conventional or LTR mode. Note 2: The test mode procedure that follows assumes that the Customer ... unmute the receiver. l FPA entry selected and RF TEST selected enables all test modes. To enter the test mode for a four-line display radio.
4. Turn the radio on the first icon. Each additional press of 'side button 2' (see Note ...
Service Manual - Page 42
... AAH25RCH6GB6AN)
1. Within ten seconds after the self test is verified by a chirp.
9. Turn radio off to the RF Test mode.
10.
release, view "49/0". 3. Press 5, view "53/1"; Press 6, view "...in the closed condition. 2. To access all 14 test modes on . 2. Press #, view "59/1"; Turn the radio on a 4-channel radio, the frequency knob and mechanical stop sleeve must be removed ...
Service Manual - Page 46
...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 RX #3 or #10
4 Low ...Non-Display Radios
The radio channels and test frequencies are selected using 'side buttons 1 and 2', as shown in conventional or LTR modes. Note: On UHF LTR models, radios must be...
Service Manual - Page 47
... 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 ...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- Transceiver Performance Testing
4-7
4.4 Receiver Performance Tests
...
Service Manual - Page 48
... Hz Low Band
Refer to continuous (during the
performance check). and Canada.
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) Global. 5 kHz (20 kHz Ch Sp)
U.S.
PTT to Specifications
Press PTT switch on radio.
Service Manual - Page 51
... (Conventional and LTR)
Cloning is the process of copying the content of both radios reset themselves and turn their green LEDs. Tuning and alignment information are not transferable and are duplicated in the cloning process. Turn source and target radios off . The Radio Tuning, Programming, Cloning, Lowband Antenna Cutting Procedure, PassPort Tone Options, and Diagnostic Functions...
Service Manual - Page 58
... cursory tests to present an error code on the radio display.
Failure Display FAIL 01/81 FAIL 01/82
ERROR 01/02 FAIL 01/...power-up Display Codes to display the appropriate error code, generate an illegal mode tone for one second, and then reset its microcontroller. Problems detected during these cases, the radio will not. Fatal errors will inhibit user operation, non-fatal errors will ...
Service Manual - Page 59
...not correct. PTCB Firmware Defective. Programming is ... Turn radio off and restart. Use CPS and PPCPS to determine if the radio is a... Use PPCPS to aid in Watchdog Timer... a Primary Talk Group.
6.4 Operation Display Codes
During radio operation, the radio performs dynamic tests to properly program radio and PTCB. Selected Mode (Zone/Channel) codeplug checksum error.
Replace PTCB.
The...
Service Manual - Page 67
... Guide
Note: Models ending in FD are Federal Government Radios Only. 8-1
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
AAH25RDG9AA5_N
HT1250...
Service Manual - Page 68
...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...one of each is required.
HT750 Back Cover Kit HT750 Back Cover Kit HT750 Back Cover Kit HT1250 Back ...
Service Manual - Page 83
... in . x 2.26 in . Model Chart and Test Specifications
8-17
8.16 Specifications, HT1250•LS+ Radio
General
Specification
UHF
VHF
Model Numbers:
Frequency Range:
Frequency Stability: (-30°C to +60°C, 25°C Ref.) Channel ...17.5 ounces (500 grams) 15.8 ounces (450 grams) 12.5 ounces (350 grams)
Low Power 11 hours 14 hours 12 hours 11 hours
High Power 8 hours 11 hours 9 ...
Service Manual - Page 84
...radios meet or exceed requirements of MIL STD 810 C, D, E. 8-18
Specification Power Output NiMH @ 7.5V: Spurs/Harmonics:
Transmitter
Audio Response: (from 6 dB/oct. Modulation Limiting:
FM Hum and Noise:
Model Chart and Test Specifications
UHF / VHF...@ 25 kHz
-40 dB
Specification Sensitivity (12 dB SINAD) EIA:
Receiver
UHF/VHF 0.25 µV Typical
Sensitivity (20 dB SINAD) ETS:
0.5 µV...
Service Manual - Page 93
... Oscillator Buffer Integrated Circuit. Main control unit of oscillation can be varied by changing a control voltage. Standby Mode
System Central Controller System Select
TOT TPL µC UHF µP VCO
VCOBIC VHF VSWR
Glossary-3
An operating mode whereby the radio is muted but still continues to and from subscriber units (see ISW and OSW). Microcontroller. Microprocessor.
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