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P25
Operations Manual
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User Manual
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Midland Radio P25 User Manual

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Midland
Mobile Radio
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
680-090-2041 Version 5.0
OPERATION MANUAL
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Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
PREFACE
Thank you for purchasing a Midland Syn-Tech III P25 Mobile Radio. Properly used, this product will give you many years of reliable service. To get the most out of your purchase, be sure to carefully read this manual and keep it on hand for later reference when needed.
Before installing and using your radio, please read this operation manual.
CUSTOMER ASSISTANCE
Should you encounter any problems with this product, or are unable to use its features, please review this operation manual. If you require further assistance after reading this manual, please contact your local dealer.
FOR WARRANTY, PRODUCT SERVICE AND ACCESSORY INFORMATION
Please contact your local dealer or distributor.
Do not attempt to service any internal parts yourself. This radio should be opened by authorized personnel only.
Your radio is packed and labeled according to the commercial packaging standards.
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IMPORTANT SAFETY INFORMATION
Before installing and using your radio, please read this operation manual.
GENERAL PRECAUTIONS
Always use only Midland authorized accessories. Unauthorized accessories have the risk of fire hazard, explosion,
personal injury or damage to the radio.
CAUTION
Changes or modifications to your radio may void its compliance with government laws/rules and make it illegal to use.
Avoid using the radio at temperatures below -30ºC or above 60ºC. Avoid storing the radio at temperatures below -40ºC or above 85ºC.
WARNINGS
Your Midland Syn-Tech III P25 Mobile Radio generates electromagnetic RF energy when it is transmitting. To ensure that you and those around you are not exposed to excessive amounts of that energy (beyond recommended allowable limits for occupational use):
DO NOT operate your radio without a proper antenna. Otherwise, you can seriously damage your radio.
DO NOT touch the antenna when you are transmitting. NEVER connect the transceiver to any AC power source. This may cause
an electric shock or fire hazard and will damage your radio. NEVER connect the transceiver to a DC power source either greater than
16 volts or with reverse polarity. Doing so will damage the transceiver. DO NOT attempt to service any internal parts yourself. Please ask your
dealer for necessary service. This radio should be opened by authorized personnel only.
Please read the installation and operating instructions carefully.
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FCC EXPOSURE STATEMENTS
WARNINGS
The FCC has adopted a safety standard for human exposure to RF energy. Proper operation of this radio under normal conditions results in user exposure to RF energy below the Occupational Safety and Health Act and Federal Communication Commission limits.
Mandatory Safety Instructions to Installers and Users:
This radio is NOT approved for use by the general population in an uncontrolled environment. This radio is restricted to occupational use and work related operations only. Radio operators must have the knowledge to control their exposure conditions and the exposure conditions of bystanders and/or passengers to satisfy the lower exposure limit allowed for General Population.
To comply with FCC RF exposure limits, DO NOT operate the transmitter of this mobile radio when a person outside the vehicle is within 22 inches (56 centimeters) of the antenna.
The antenna supplied by the manufacturer or radio dealer must be mounted at a location such that during radio transmission, no person or persons can come closer than the above indicated minimum safe distance to the antenna, i.e. 22 inches. To comply with current FCC RF exposure limits, the antenna must be installed at or exceeding the minimum safe distance stated above, and in accordance with the requirements of the antenna manufacturer or supplier.
Vehicle Installation Instructions:
The antenna used for this transmitter must be mounted on the center of the roof ONLY and must be installed in vehicle having the following characteristics in order to prevent bystanders and passengers from being exposed to levels exceeding the limits for General Population/Uncontrolled Exposure environment:
1. All passengers must be sitting under a solid metal roof.
2. For rear deck trunk and roof top installations, the antenna must be located at least 22 inches (56 centimeters) away from rear-seat passengers and bystanders in order to comply with the FCC RF exposure requirements.
DO NOT operate the radio without the proper antenna installed. Do not substitute any antenna for the one supplied or recommended by the manufacturer or radio dealer. Antennas used for this transmitter must not exceed an antenna gain of 3 dBi. By not following the antenna recommendations you may be exposing person(s) to excess radio frequency radiation. You may contact your radio dealer or the manufacturer for further instructions.
DO NOT transmit more than 50% of total radio use time (50% duty cycle). Transmitting for more than 50% of the time can cause FCC RF exposure compliance requirements to be exceeded. This radio is transmitting whenever the Transmit/Receive LED is red. Pressing the PTT switch on the side of the microphone normally causes the radio to transmit.
The preceding information is provided to make you aware of RF exposure and how to ensure that this radio is operated within FCC RF exposure limits.
You, as the qualified end-user of this radio device must control the exposure conditions of bystanders to ensure the minimum separation distance, stated above for satisfying FCC RF exposure compliance, is maintained between the antenna and nearby persons. Transmit only when all person(s) are at least the minimum distance from the properly installed, externally mounted antenna.
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PATENT AND COPYRIGHT STATEMENTS
The AMBE+2™ voice coding Technology embodied in this product is protected by intellectual property rights including patent rights, copyrights and trade secrets of Digital Voice Systems, Inc. This voice coding Technology is licensed solely for use within this Communications Equipment. The user of this Technology is explicitly prohibited from attempting to extract, remove, decompile, reverse engineer of disassemble the Object Code, or in ay other way convert the Object Code into a human readable form. U.S. Patents Nos. #5,870,405, #5826,222, #5,754,974, #5,701,390, #5,715,365, #5,649.050, #5,630,011, #5,581,656, #5,517,511, #5,491,772, #5,247,579, #5,226,084, and #5,195,166
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OPERATION MANUAL
PRODUCT FEATURES
Your Midland Syn-Tech III P25 Mobile Radio has the following features:
• 136-174 MHz VHF and 380-470 MHz UHF bands
• Mixed analog and digital mode operation
• Easy installation
• Low maintenance
• Tri-color LCD display
• Full keypad
• High quality audio
• User friendly interface
• Extensive user prompts, alerts and warnings
• Flexible accessory connections
• Microprocessor controlled
• DSP based audio
• Flash memory
• Synthesized frequency control
• Extensive use of surface mount technology
• PC controlled testing and alignment
• CTCSS/CDCSS sub-audible signaling
• 2-Tone / 5-Tone analog signaling
• Analog DTMF encoding
• Conforms with TIA/EIA-603-A standard in Analog Mode
• Conforms with TIA/EIA-102-CAAB standard in Digital Mode
• Conforms with APCO25 EIA / TIA 102 standards
• Conforms with MIL-STD-810E standards
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ABBREVIATIONS AND ACRONYMS
ACK : Acknowledge AES : Advanced Encryption Standard ALG : Algorithm ANI : Automatic Number Identification dBm : Decibel Milliwatt CIK : Crypto Ignition Key Identity CDCSS : Continuous Digital Coded Squelch System CTCSS : Continuous Tone Controlled Squelch System DCS : Digital Coded Squelch DES : Data Encryption Standard DSP : Digital Signal Processing GPS : Global Positioning System ID : Identity LCD : Liquid Crystal Display MSG : Message NAC : Network Access Code RF : Radio Frequency RSSI : Received Signal Strength Indicator RX : Receive SC : Selective Call TCS : Tone Coded Squelch TBX : Telephone Branch Exchange TX : Transmit WACN : Wide Area Communication Network
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TABLE OF CONTENTS
1
INTRODUCTION...................................................................................................... 1
1.1 Package Contents........................................................................................... 1
2 INSTALLATİON....................................................................................................... 2
3 RADİO CONTROLS AND INDİCATORS................................................................. 3
3.1 Front and Rear Views ..................................................................................... 3
3.2 Button and Key Functions ............................................................................... 4
3.2.2 Alpha-Numeric keypad........................................................................ 4
3.2.3 Up/Down keys..................................................................................... 4
3.2.4 Left soft key (Menu) ............................................................................ 4
3.2.5 Right soft key (Index).......................................................................... 4
3.2.6 Power Adjust (long press)/Mode Change (short press) key................ 5
3.2.7 Monitor (long press)/Call Wait Option (short press) key...................... 5
3.2.8 Keypad Lock (short press)/Emergency Reset (long press) key .......... 5
3.2.9 Scan key............................................................................................. 5
3.2.10 Star key............................................................................................... 6
3.2.11 Pound key........................................................................................... 7
3.3 Display Icons................................................................................................... 9
3.4 Alpha-numeric Keypad Entry......................................................................... 11
4 OPERATION.......................................................................................................... 12
4.1 Basic Operation............................................................................................. 12
4.1.1 Turning the Radio On and Off........................................................... 12
4.1.2 Selecting Zones ................................................................................ 13
4.1.3 Selecting Channels........................................................................... 15
4.1.4 Receiving Signals ............................................................................. 16
4.1.5 Transmitting to Other Radios ............................................................ 17
4.1.6 Selecting Transmit Power................................................................. 20
4.1.7 Selecting Digital Talk Group ............................................................. 21
4.1.8 Selecting Talkaround Transmit Mode ............................................... 23
4.1.9 Monitoring Channels......................................................................... 24
4.1.10 Selecting Digital Call Wait Option ..................................................... 26
4.1.11 Scanning Channels........................................................................... 27
4.1.12 Locking the Keypad .......................................................................... 30
4.1.13 Switching to the Home Zone and Channel........................................ 31
4.2 Advanced Operation ..................................................................................... 32
4.2.1 Receiving Emergency Calls .............................................................. 32
4.2.2 Transmitting Emergency Calls.......................................................... 33
4.2.3 Receiving Digital Individual Calls ...................................................... 34
4.2.4 Transmitting Digital Individual Calls .................................................. 36
4.2.5 Transmitting Digital Unaddressed Calls ............................................ 38
4.2.6 Transmitting Digital Telephone Interconnect Calls............................ 39
4.2.7 Receiving a Digital Call Alert............................................................. 40
4.2.8 Transmitting a Digital Call Alert......................................................... 40
4.2.9 Receiving and Sending Non-voice Messages................................... 41
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4.2.10
Channel Programming...................................................................... 49
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4.3 Menu Operation ............................................................................................ 50
4.3.1 Analog Mode Menu Tree .................................................................. 50
4.3.2 Digital Mode Menu Tree.................................................................... 52
5 ACCESSORIES ..................................................................................................... 55
6 STORAGE AND CLEANING PRECAUTIONS...................................................... 56
7 TROUBLESHOOTING........................................................................................... 57
8 SPECIFICATIONS ................................................................................................. 58
8.1 Receiver Technical Specifications................................................................. 60
8.2 Transmitter Technical Specifications............................................................. 61
9 WARRANTY STATEMENT ................................................................................... 62
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OPERATION MANUAL
1 INTRODUCTION
1.1 Package Contents
The following items are in your Midland Syn-Tech III P25 Mobile Radio package:
Transceiver Assembly
Microphone
Microphone Hanger
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2 Installation
Installation should be performed by an Authorized Midland LMR Dealer only.
Radio installation should be performed by qualified and trained personnel, familiar with automotive electronics installation, and FCC RF exposure guidelines. This transceiver should be installed in 12V negative ground vehicles only. Installation instructions are available in the corresponding radio service manual.
Antenna selection, installation and positioning requires knowledge of RF radiation and exposure conditions and should be performed by qualified personnel only. Please consult your dealer or communications coordinator for more information.
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3 Radio Controls and Indicators

3.1 Front and Rear Views

Mobile Radio Front View
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Mobile Radio Rear View
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3.2 Button and Key Functions

Below is a brief description of each button or key. For more details of each function refer to the operation section of this manual. Many of the functions may be disabled by radio programming or unavailable because of the current analog/digital mode selection. Many of the buttons have a short press, or press and release function, and a long press, or press and hold function. The short press is function is performed if the button is pressed for less than one second, and the long press function is performed if the button is pressed for more than one second.

3.2.1.1 Emergency Call Button

The emergency button initiates emergency mode. The emergency function is only available in digital mode. The emergency key must be pressed for five seconds to activate the emergency function. Once emergency mode is activated, the radio will switch to emergency channel and initiate five SBC emergency transmissions. The emergency bit will be set on all user initiated digital transmissions until the emergency is cleared by a long press of the keypad lock key or the radio is turned off.
3.2.2 Alpha-Numeric keypad
The alpha-numeric keypad provides direct channel select from standby mode. The alpha-numeric keypad also generates DTMF tones while PTT is pressed on analog channels and enters alpha-numeric characters within other functions.

3.2.3 Up/Down keys

The up/down keys provide up/down channel select from standby mode. The up/down keys are generally used to scroll through lists within other functions.

3.2.4 Left soft key (Menu)

The left soft key enters the menus from standby mode. The left soft key is generally used as SELECT or OK within other functions.

3.2.5 Right soft key (Index)

The right soft key accesses the index (20 unit ID address book) from standby mode. Once the appropriate ID is displayed, press SELECT to edit the entry or # to initiate an acknowledged individual call to the displayed unit. Up to six of the first entries may be
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predefined in radio programming and may not be editable. Individual call initiation may be disabled by radio programming.
The right soft key is generally used as EXIT within other functions. The right soft key is used a nuisance channel delete during scan.

3.2.6 Power Adjust (long press)/Mode Change (short press) key

A long press of this key changes the transmit power level. The selections are high, medium and low power. A default power level is set each time the channel is selected.
A short press of this key changes the transmit mode on multi-mode and digital channels. The selections may include analog, digital clear, and digital encrypted transmit modes. A default mode is set each time the channel is selected.

3.2.7 Monitor (long press)/Call Wait Option (short press) key

A long press of this key turns monitor on. The function of the monitor button depends on digital/analog/mixed mode and the radio programming. If monitor is enabled the monitor function may disable the squelch on analog and mixed channels. The monitor function may allow all NACs and talk groups to be received on digital and mixed channels. While monitor is on, a long press of the Monitor/Call Wait key turns monitor off.
A short press of this key turns the call wait option on. The call wait option is available only on digital channels. When the call wait option is on, group calls will be muted. If an individual call (addressed to the radio) or all call is received, the call will be heard and the call wait option will be canceled. While call wait is on, a short press of the Monitor/Call Wait key turns call wait off.

3.2.8 Keypad Lock (short press)/Emergency Reset (long press) key

A short press of this key initiates keypad lock. While the keypad is locked, a short press of the Keypad Lock/Emergency Reset key will initiate keypad unlock mode.
While the emergency function is active, a long press of the Keypad Lock/Emergency Reset key will cancel the emergency mode.

3.2.9 Scan key

A short press of this key turns on selectable priority scan. Selectable priority scan assigns the selected channel as the high priority channel. A second, lower priority channel may be assigned in radio programming. All channels in the selected zone’s
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scan list will be scanned. If PTT is pressed while scanning, the radio will transmit on the high priority channel. If PTT is pressed while scan is paused on a channel the radio will transmit on the pause channel. If MENU is pressed scan is canceled. While scan is on, a short press of the Scan key cancels scan.
The Scan key is also used as a clear (long press) or backspace (short press) key during alpha-numeric keypad entry.

3.2.10 Star key

The ∗ key is a multi-function key allowing selection of several functions with successive presses. The available functions depend on analog/digital mode. In digital mode the talk group select, all call, talkaround and home functions may be available. In analog mode the talkaround and home functions may be available.
3.2.10.1 Switching Talk Group
The first press of the ∗ key may prompt “GROUP:” to enter a new talk group. This function is only available in digital mode and the entered talk group must be in the selected zone’s talk group list.
3.2.10.2 Entering/Exiting Unaddressed Voice Call Mode
Successive presses of the ∗ key may prompt “ENTER TO UNADDRESSED VOICE CALL?” or “EXIT UNADDRESSED VOICE CALL?” to enter/exit unaddressed voice call mode. This function is only available in digital mode. Unaddressed Voice Call mode implements an all call function to all talk groups using the channel.
Transmitting unaddressed calls may be disabled by radio programming.
3.2.10.3 Entering/Exiting Talkaround Mode
Successive presses of the ∗ key may prompt “ENTER TO TALKAROUND MODE?” or “EXIT TALKAROUND MODE?” to enter/exit talkaround mode. This option is not available on simplex (direct) channels. The talkaround function sets the transmitter to the programmed receive frequency/CTCSS/DCS/NAC.
3.2.10.4 Switching to Home Zone and Channel
Successive presses of the ∗ key may prompt “GO TO HOME?” to switch to the home zone and channel.
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3.2.11 Pound key

The # key is a multi-function key allowing selection of several functions with successive presses. The available functions depend on analog/digital mode. In digital mode the zone select, status set, individual call, telephone call and call alert functions may be available. In analog mode the zone select, selective call and two tone call functions may be available.
3.2.11.1 Switching Zones
The first press of the # key may prompt “ZONE NO:” to switch zones. The up/down keys will scroll through the available zones. The left soft key selects the displayed zone and the right soft key exits without changing zones.
3.2.11.2 Setting Current Status
Successive presses of the # key may prompt “CUR. STATUS:” to set the current status. This function is only available in digital mode. The current status is used when sending status to other users, or when other users request the current status. The current status may also be set under MENU | STATUS | PRESENT STATUS.
Sending current status and requesting status from other users may be disabled in radio programming. You may still set current status and receive status messages from other users.
3.2.11.3 Entering Unacknowledged Individual Call Mode
Successive presses of the # key may prompt “INDIVIDUAL:” to enter unacknowledged individual call mode. This function is only available in digital mode. A unit ID may be entered or selected from the index list. Once a unit ID is selected, the radio will enter individual call mode. The radio will transmit unit to unit calls to the entered unit ID each time PTT is pressed. If PTT is not pressed and no signal is received the individual call mode will time out after ten seconds.
Individual calling may be disabled by radio programming.
3.2.11.4 Initiating a Telephone Interconnect Request
Successive presses of the # key may prompt “TELEPHONE:” to initiate a telephone call. This function is only available in digital mode. This function initiates a telephone interconnect request on the RF subsystem.
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Telephone calling may be disabled or the number of dial digits may be limited by radio programming.
3.2.11.5 Sending a Call Alert
Successive presses of the # key may prompt “CALL ALERT:” to initiate a call alert transmission. This function is only available in digital mode.
Call alert transmissions may be disabled by radio progr amming.
3.2.11.6 Transmitting a Selective Call
Successive presses of the # key may prompt “SELECTIVE CALL” to transmit a selective call. This function is only available in analog mode.
Selective calling may be disabled by radio programming.
3.2.11.7 Transmitting a 2-Tone Call
Successive presses of the # key may prompt “TWO-TONE CALL” to transmit a 2-tone call. This function is only available in analog mode.
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3.3 Display Icons

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Table 1: Display Icons
This Digital Receive icon appears when a clear (unencrypted) digital signal is received.
This Digital Talkaround Receive icon appears when a clear digital signal is received in direct or talkaround mode.
This Digital Encryption 1 Receive icon appears when an encrypted digital signal using the first encryption algorithm is received.
This Digital Encryption 2 Receive icon appears when an encrypted digital signal using the second encryption algorithm is received.
This Analog Transmit icon appears when the radio is set to transmit in analog mode.
This CTCSS Transmit icon appears when the radio is set to transmit in analog mode with CTCSS.
This CDCSS Transmit icon appears when the radio is set to transmit in analog mode with CDCSS.
This Analog Talkaround Transmit icon appears when the radio is set to transmit in analog talkaround mode.
This Digital Transmit icon appears when the radio is set to transmit in clear digital mode.
This Digital Talkaround Transmit icon appears when the radio is set to transmit in digital talkaround mode.
This Digital Encryption 1 Transmit icon appears when the radio is set to transmit in digital encrypted mode using the first encryption algorithm.
This Digital Encryption 2 Transmit icon appears when the radio is set to transmit in digital encrypted mode using the second encryption algorithm.
This Received Signal Level icon appears when a signal is being received. The number of bars indicates the relative signal strength.
This SMS icon appears after an SMS is received and remains on until the message is read.
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This High Power icon appears when high transmit power level is selected.
This Mid Power icon appears when medium transmit power level is selected.
This Low Power icon appears when low transmit power level is selected.
This Tone Squelch icon appears when channel is set to receive a CTCSS or CDCSS signal.
This Call Wait icon appears when digital call wait mode is selected.
This Alert Tones Off icon appears when alert tones are disabled.
This Keypad Lock icon appears when keypad lock is selected.
This Scan icon appears when scan is selected.
This Low Battery icon appears when a low voltage condition is detected.
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3.4 Alpha-numeric Keypad Entry

The keypad is used to enter alpha-numeric characters within many functions. When the radio is in alpha-numeric mode, successive presses (less than one second apart) of the keys will step through the available characters. Pausing for more than a second will accept the displayed character and move the cursor right one space. A short press of the Scan/Clear key deletes the previous character and move the cursor left one space. A long press of the Scan/Clear key returns the radio to standby mode.
Table 2: Alpha-numeric Keypad Entry
Keys
Number of Key Presses
1 2 3 4 5 6 7 8 9 10 11
1 Space 1
2 A B C 2 a b c Ç ç
3 D E F 3 d e f
4 G H I 4 g h i Ğ ğ İ I
5 J K L 5 j k l
6 M N O 6 m n o Ö ö
7 P Q R S 7 p q r s Ş ş
8 T U V 8 t u v Ü ü
9 W X Y Z 9 w x y z
0 0 + . , : ; ! ” ’
* / \ - ( ) @
# ? € $ % & < = >
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4 OPERATION

4.1 Basic Operation

Despite the radio’s advanced feature set, the basic receive and transmit operations can still be quite simple. The radio is capable of distinguishing between analog and digital signals, and the channel may be configured to receive both signal types with no user intervention. The radio channel may also be configured to allow users to transmit analog signals, digital signals, or choose the appropriate transmit mode.

4.1.1 Turning the Radio On and Off

Press and release the On/Off Volume Knob to turn the mobile radio on. Press and hold the On/Off Volume Knob at least two seconds to turn the mobile radio off. Rotate the knob clockwise to increase the speaker volume. Rotate the knob counter-clockwise
Figure 4.1 – On/Off
to decrease the speaker volume.
While the radio is performing power-on self-tests, it will display the greeting message and the current zone selection. The radio will power-on to the last selected channel.
Figure 4.2 – Increase volume
Figure 4.3 – Decrease volume
If a power-on password has been set, the radio will prompt for password entry when it is turned on. Use the numeric keypad to enter the correct password then press the left soft key (OK). If the password is entered incorrectly five times, the radio will lock and must be reprogrammed to reset the password.
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Enter 5
digit
password
Press OK
to
continue
Figure 4.4 – Power-on password entry
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4.1.2 Selecting Zones
The radio channels may be organized into zones or channel groupings to sort and organize the channels. To
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OPERATION MANUAL
select a new zone, press the (pound) key, then use the Up/Down keys to scroll through the available zones. The new zone number may also be entered using the keypad. Press the left soft key (OK) to switch to the new zone. The first channel in the new zone will be displayed.
Press #
key
Use up/down to select new
zonel
Press OK
to select
new zone
Figure 4.5 – Zone selection using # key
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A new zone may also be selected using MENU | CHANNEL PARAMETERS | ZONES.
Press
MENU
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Use up/down to
select
Channel
Use up/down to select
Zones
Use up/down to select
new zone
Figure 4.6 – Zone selection using Menu
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4.1.3 Selecting Channels
The (up/down) keys may be used to increment or decrement the channel selection.
Enter channel
The (alpha-numeric keypad) may be used to enter a channel number for direct channel selection.
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OPERATION MANUAL
number
Press OK
Figure 4.7 – Direct channel number entry
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4.1.4 Receiving Signals
The radio channel may be configured to receive only analog transmissions, only digital transmissions or both. If the channel is programmed to receive both analog and digital signals (mixed mode receive), the radio will automatically switch to the appropriate mode when receiving the signal.
4.1.4.1 Analog Reception
An analog signal exceeding the squelch threshold is indicated by a green Transmit/Receive LED. A relative value of signal strength is also indicated by
the Received Signal Level icon (
). If the channel’s analog reception parameters are met, the received audio is heard over the speaker.
Figure 4.8 – Analog receive display
4.1.4.2 Digital Reception
A decoded digital signal is indicated by a green Transmit/Receive LED and the digital Received Signal Type icon
(
). A relative value of signal
strength is also indicated by the Receive Signal Strength icon (
the channel’s digital reception parameters are met, the received audio
). If
Figure 4.9 – Digital receive display
is heard over the speaker.
More information is displayed about the digital receive signal. While receiving, the talk group ID is displayed in decimal format on the third line ( displayed in decimal format on the fourth line (
), and the source ID is
). If the received source
ID is in the radio’s address book, the name associated with the source ID will be displayed ( Digital Talkaround icon is displayed to the left of the source ID ( Digital Receive icon is displayed ( letter indicating the emergency bit is normal (
). If the received signal has status bits set to 0, the direct or
), otherwise the
). To the right of the talk group ID is a single
) or emergency ( ). To the right of the source ID is a single letter indicating the link control format is set for group call ( ) or individual call (
).
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4.1.5 Transmitting to Other
Radios
The radio channel may be configured to transmit in analog mode, digital mode or to allow you to select either analog or digital mode. A default mode is chosen by radio programming. The default mode is used each time the channel is selected or radio is turned on with the channel selected. The other available modes may be chosen by successive short presses of the Power Adjust/Mode Change key.
4.1.5.1 Analog Transmissions
1. Press the (Power
Adjust/Mode Change) key repeatedly until analog transmit mode is displayed. Depending on channel programming, the analog transmit mode may display as
carrier squelch ( squelch (
).
(
), CTCSS
) or CDCSS squelch
2. Ensure that the channel is clear.
3. Press and hold the push to talk key
(PTT). The Transmit/Receive LED will light red while transmitting.
4. Hold the microphone approximately
two inches from your mouth and speak in a clear, normal voice. Keep the PTT switch pressed until you have finished speaking.
5. Release the PTT switch to return to
standby mode and receive any reply.
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
Short press
of Mode
Change key
selects
digital mode
Short press
of Mode
Change key
selects analog
mode
Figure 4.10 – Transmit mode selection
Figure 4.11 – Carrier transmit display
Figure 4.12 – CTCSS transmit display
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Figure 4.13 – CDCSS transmit display
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OPERATION MANUAL
4.1.5.2 Digital Transmissions
1. Press the (Power
Adjust/Mode Change) key repeatedly until digital transmit
mode is displayed (
).
2. Check that the correct talk group ID
is selected.
3. Ensure that the channel is clear.
Figure 4.14 – Digital transmit display
4. Press and hold the push to talk key (PTT). The Transmit/Receive LED will light red
while transmitting.
5. Hold the microphone approximately two inches from your mouth and speak in a
clear, normal voice. Keep the PTT switch pressed until you have finished speaking.
6. Release the PTT switch to return to standby mode and receive any reply.
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4.1.5.3 Time Out Time
A Time Out Time may be programmed to limit the length of continuous transmissions. If the Time Out Time is exceeded, release PTT and wait for the channel to be available again. The Time Out Time may be set from 15-225 seconds in radio programming.
4.1.5.4 Busy Channel Lockout
The radio may be programmed to inhibit transmission while the channel is busy. Wait until the channel is clear before transmitting.
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
Figure 4.15 – Transmit time out
Figure 4.16 – Busy channel lockout
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4.1.6 Selecting Transmit Power

To minimize interference with others, use the lowest transmit power that will provide adequate range. The radio has three transmit power levels which are selected with successive long presses of the Power Adjust/Mode Change key. The actual transmit power associated with each level is set in radio programming. To switch to the next power level, press and hold
the (Power Adjust/Mode Change) key for more than one second.
Long press
of Power
Adjust key
selects mid
power
Long press
of Power
Adjust key
selects low
power
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
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Long press
of Power
Adjust key
selects high
power
Figure 4.17 – Transmit power selection
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Syn-Tech III P25 Mobile Radio
OPERATION MANUAL

4.1.7 Selecting Digital Talk Group

The default talk group may be set for the channel in radio programming. When the channel is selected, the default talk group is used. If a default talk group has not been set for the channel, the radio will use the talk group last selected and displayed.
Press ∗ key
until
“Group:” is
displayed
Each zone in the radio may have a list of allowed talk groups. When the radio is in digital transmit mode, you may select a new talk group from this list by repeatedly
Enter new
talk group
then press
OK
pressing the (star) key until “GROUP:” is displayed. Then use the alpha-numeric keypad to enter the new talk group. Then press the left soft key (OK) to use the
Figure 4.18 – Talk group selection using ∗ key
entered talk group. If the entered talk group is not in the zone’s talk group list, the radio will not allow the talk group selection.
Each zone in the radio may have all valid talk groups assigned to it. This allows any talk
group to be selected by the by repeatedly pressing the (star) key until “GROUP:” is displayed. Then use the alpha-numeric keypad to enter the new talk group. Then press the left soft key (OK) to use the entered talk group.
The radio has a talk group scan feature which is on by default. When a signal is received from any talkgroup in the list, the radio will switch to the received talkgroup for the duration of the receive signal and then start the scan delay timer. You may reply using the received talk group during the scan delay time, by pressing PTT. After the scan delay time expires the radio will switch back to the selected talk group. Use MENU | CHANNEL PARAMETERS | GROUP SCAN to turn talk group scan on/off.
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The zone’s talk group list may be viewed and a new talk group may also be selected from MENU | CHANNEL PARAMETERS | GROUPS.
Press
MENU
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
Use
up/down to
select
Channel
Parameters
Use
up/down to
select
Groups
Use
up/down to
select new
talk group
Figure 4.19 – Talk group selection using Menu
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4.1.8 Selecting Talkaround Transmit Mode

On channels programmed for repeater operation, the radio may be set to talkaround mode. Talkaround mode allows direct mobile to mobile communication without accessing the repeater. Repeatedly press the
(star) key until “ENTER TO
Press ∗ key
until “Enter to
Talkaround
Mode?”
TALKAROUND MODE?” is displayed then press the left soft key (YES). The radio will switch it’s
Select YES
transmit frequency parameters to those programmed for receive. The
Analog Talkaround icon ( Digital Talkaround icon (
) or
) is displayed while talkaround mode is active
The radio will remain in talkaround mode until it is canceled, the
Figure 4.20 – Entering talkaround mode
channel is changed, the radio is turned off, or a new zone is selected. To cancel talkaround mode,
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
repeatedly press the (star) key until “EXIT TALKAROUND MODE?” is displayed, then press the left soft key (YES).
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Press ∗ key
until “Exit
Talkaround
Select YES
Mode?”
Figure 4.21 – Exiting talkaround mode
23
4.1.9 Monitoring Channels
Press and hold the (Monitor/Call Wait Option) key for more than one second to turn the monitor function on. The function of the monitor button depends on radio programming. If Monitor Channel is enabled, the monitor function will disable the squelch on analog and mixed channels.
Long press
Monitor key
to turn
monitor on
Squelch is
opened
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
Long press
Monitor key
to turn
monitor off
Figure 4.22 – Monitoring channel
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If Monitor All NACs & T.Groups is enabled, the monitor function allows all NACs and talk groups to be received on digital and mixed channels. While monitor is on, a long press of the
(Monitor/Call Wait
Option) key turns monitor off.
Long press
Monitor key
to turn on
Monitors all
talk groups
and NACs
monitor
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
Long press
Monitor key
to turn off
monitor
Figure 4.23 – Monitoring all talk groups and NACs
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4.1.10 Selecting Digital Call Wait Option
A short press of the (Monitor/Call Wait Option) key turns the call wait option on. The Call Wait
icon (
) is displayed while call wait mode is on. While the call wait option is on, all normal group calls will be
Short press
Call Wait
key to turn
on call wait
muted. If an individual call (with matching destination ID) or all call is received, the call will be heard and the call wait option will be canceled. While call wait is on, a short press of
the (Monitor/Call Wait Option)
Radio will
normal
group calls
key turns call wait off.
Short press
Call Wait
key to turn
off call wait
mute
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
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Figure 4.24 – Selecting call wait option
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Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
4.1.11 Scanning Channels
A short press of the (Scan) key turns on selectable priority scan. The Scan icon (
) is displayed while scan is active. Selectable priority scan assigns the selected channel as the high priority channel. A second, lower priority channel may be assigned to each zone in radio programming. All channels in the selected zone’s scan list will be scanned. If MENU is pressed or the portable channel knob is changed, scan is
canceled. While scan is on, a short press of the (Scan) key cancels scan.
4.1.11.1 Transmitting While Scanning
If PTT is pressed while scanning the radio will transmit on the high priority channel.
Press Scan
key to turn
on scan
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Press PTT
to transmit
on high
priority
channel
Release
PTT, scan
resumes
after scan
Figure 4.25 – Pressing PTT while scanning
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If PTT is pressed while scan is paused on a channel the radio will transmit on the pause channel.
Radio
receives
signal while
scan is on
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
Press PTT
to transmit
on pause
PTT, scan
after scan
channel
Release
resumes
Figure 4.26 – Pressing PTT while scan is paused
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4.1.11.2 Editing the Scan List
You can add and delete channels from the selected zone’s scan list using MENU | CHANNEL PARAMETERS | CHANNEL SCAN. If a “+” is displayed above the channel name, the channel is currently in the scan list. If “-“ is displayed above the channel name, the channel is not in the scan list. A “1” or “2” indicate priority channel selections.
Press
MENU
Use
up/down to
select
Channel
Parameters
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
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Use
up/down to
select
Channel
Scan
Select
channel to
add or
remove
Figure 4.27 – Editing the zone’s scan list
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4.1.12 Locking the Keypad
Press the (Keypad Lock) key to lock the alpha-numeric, up/down, scan, and left and right soft keys. While the keypad is
locked, press the (Keypad Lock) key, then press the left soft key (UNLOCK) to unlock the keypad.
Press
Keypad
Lock to lock
the keypad
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
Press Keypad
Lock then press
UNLOCK to
unlock the
keypad
Figure 4.28 – Locking the keypad
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∗
4.1.13 Switching to the Home Zone and Channel
Press the (star) key repeatedly until the “Go to Home?” is displayed. Then press the left soft key (OK) to switch to the home zone
Press
key
until “Go To
Home?”
and channel. The home zone and channel are set in radio programming.
Press OK to
switch to
home zone
and
channel
Figure 4.29 – Switching to the home zone and channel
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
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Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
4.2 Advanced Operation
Some of the radio’s more advanced operations are listed in this section. Most of these advanced features may be disabled in radio programming. In this case, the feature being described may not appear, or may have a reduced, view only function.

4.2.1 Receiving Emergency Calls

When an emergency alert transmission is received, the radio sounds and displays the emergency alert and displays the unit ID of the sender. Pressing any key will silence the alert tone. Press the right soft key to exit the emergency display mode. When a call with the emergency bit set is received the radio displays the call with emergency bit indicator
(
).
Figure 4.30 – Emergency alert display
Figure 4.31 – Emergency call display
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4.2.2 Transmitting Emergency Calls
Press and hold the (emergency) key for five seconds to activate the emergency function. Once emergency mode is activated, the radio switches to the emergency channel set for the
Emergency
key for 5
seconds
selected zone in radio programming or initiates the emergency transmissions on the current channel.
The radio will automatically transmit
Keypad
Lock for 2
seconds to
five emergency alert transmissions and set the emergency bit on all user initiated transmissions until the emergency is cleared. The emergency is cleared by a long
Radio
reverts to
previous
channel
press of the (Keypad Lock) key or by turning the radio off.
Hold
Hold
clear
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
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Figure 4.32 – Transmitting in emergency mode
Emergency calls may be disabled in radio programming. W hen emergency calls are disabled the emergency button will not function.
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Syn-Tech III P25 Mobile Radio
OPERATION MANUAL

4.2.3 Receiving Digital Individual Calls

Individual calls are addressed to a single unit ID rather than a talk group. This radio is capable of receiving both unacknowledged and acknowledged indvidual calls.
4.2.3.1 Receiving Unacknowledged Individual Calls
When an unacknowledged individual call is received, the radio will enter individual call mode. The radio will automatically use the received source ID as the destination ID in individual call replies.
Press PTT
to reply to
individual
call
Individual
call time out
(after ten
seconds)
Figure 4.34 – Receiving unacknowledged individual call
If no signal is received and PTT is not pressed for ten seconds, individual call mode will time out.
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4.2.3.2 Receiving Acknowledged Individual Calls
When an acknowledged individual call request is received, you may accept or reject the call. The initiating radio will receive the accepted or rejected response. If the call is unanswered the display will show the missed call.
Press
ACCEPT to
enter
individual
call mode
If the call is accepted the radio will enter individual call mode and use the received source ID as the destination
Individual
call time out
(after ten
seconds)
ID in individual call replies.
Figure 4.34 – Receiving acknowledged individual call
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
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Figure 4.35 – Missed individual call
If no signal is received and PTT is not pressed for ten seconds, individual call mode will time out.
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Syn-Tech III P25 Mobile Radio
OPERATION MANUAL

4.2.4 Transmitting Digital Individual Calls

Individual calls are addressed to a single unit ID rather than a talk group. This radio is capable of transmitting both unacknowledged and acknowledged indvidual calls. Most digital radios are capable of receiving unacknowledged individual calls, but some may not be able to respond to an acknowledged individual call.
4.2.4.1 Transmitting Unacknowledged Individual Calls
Repeatedly press the
(pound) key until “INDIVIDUAL:” is displayed. Enter the unit ID or press the left soft key (INDEX) to select from the address book.
Press # key
until “Individual:” is displayed
Press the left soft key (OK) to enter unacknowledged individual call mode.
Enter unit
ID or press
INDEX.
Then press PTT to initiate an individual call to the selected unit ID.
If no signal is received and PTT is not pressed
Press OK to enter
unacknowledged
individual call
mode
for ten seconds, individual call mode will time out.
Figure 4.36 – Unacknowledged individual call mode
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4.2.4.2 Transmitting Acknowledged Individual Calls
The radio may also initiate an acknowledged individual call. This type of call may not be supported by other radios. To initiate an acknowledged
Press
INDEX
individual call, press INDEX then scroll to the desired unit ID. While the unit ID is displayed, press
the (pound) key.
The radio will send up to
Use up/down
to scroll to
unit ID, then
press # key
four individual call requests. If the receiving radio accepts the call, the initiating radio will enter individual call mode.
If accepted, radio enters
individual call
mode
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
680-090-2041 Version 5.0
Figure 4.37 – Transmitting acknowledged individual call
Individual call initiation may be disabled in radio programming.
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4.2.5 Transmitting Digital Unaddressed Calls

A digital unaddressed call is similar to a group call, except no talk group is specified (reserved talk group $FFFF is used). Any digital radio with matching receive frequency and NAC should receive the unaddressed call.
To enter unaddressed call mode,
Press ∗ key until “Enter to Unaddressed
Voice Call?”
repeatedly press the (star) key until “ENTER TO UNADDRESSED VOICE CALL?”
Press YES
is displayed, then press the left soft key (YES). The radio will now transmit with reserved talk group $FFFF. To exit unaddressed call
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
mode, repeatedly press the (star) key until “EXIT UNADDRESSED VOICE CALL?” is displayed then press the left soft key (YES).
Unaddressed call initiation may be disabled in radio programming.
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Figure 4.38 – Entering unaddressed call mode
Press ∗ key
until “Exit
Unaddressed
Voice Call?”
Press YES
Figure 4.39 – Exiting unaddressed call mode
38
Syn-Tech III P25 Mobile Radio

4.2.6 Transmitting Digital Telephone Interconnect Calls

Repeatedly press the
(pound) key until “TELEPHONE:” is displayed. Enter the telephone dialing digits then press the left soft key (CALL). The radio will send
Press # key
until
“Telephone:”
is displayed
up to four telephone interconnect requests. If the telephone interconnect request is successful, the radio will enter telephone call mode.
Enter dial
digits then
press CALL
Figure 4.40 – Initiating telephone interconnect request
Telephone interconnect calls may be disabled or the number of dial digits may be limited in radio programming.
OPERATION MANUAL
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4.2.7 Receiving a Digital Call Alert

A call alert is normally used as a low priority request to return the call when it’s more convenient. When a call alert is received the radio will display the unit ID of the initiator.

4.2.8 Transmitting a Digital Call Alert

Repeatedly press the (pound) key until “CALL ALERT:” is displayed. Enter the destination ID or press the left soft key for INDEX. Press the left soft key (SEND) to send the call alert. The radio will send up to four call alert requests.
Press # key
until “Call
Alert:” is
displayed
Call alert transmissions may be disabled in radio programming.
Enter unit ID
or press
INDEX
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
Figure 4.41 – Receiving a call alert
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Press SEND
If unit ID is does
not answer
Figure 4.42 – Initiating a call alert request
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Syn-Tech III P25 Mobile Radio
OPERATION MANUAL

4.2.9 Receiving and Sending Non-voice Messages

The radio can receive and send three types of non-voice messages when operating in digital mode. SMS messages are free text messages sent from one radio to another. With SMS messages, the message (up to 160 characters maximum) is entered using the alpha-numeric keypad and transmitted to the other radio. Predefined messages are common messages among all radios.
A predefined message is selected from the predefined message list (of 20 messages of maximum 20 characters) and the message pointer is transmitted to the other radio.
Status messages are common status settings among all radios. A current status is selected by the radio user (of 30 status settings of maximum 20 characters), and may be sent to another radio. Your current status may also be queried by another user.
Both status and predefined messages rely on the receiving radio’s database to determine the message displayed. The message characters are not sent, instead only a pointer of which message should be displayed is sent. For proper status and predefined messaging operation, both the receiving and transmitting radios should be using the same message database.
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4.2.9.1 Receiving SMS Messages
When an SMS message is received, the radio will display the SMS Message
icon (
). You may view the last twenty received SMS messages from MENU | SMS | RECEIVED MESSAGES.
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
Figure 4.43 – SMS message received
The
icon indicates unread messages and will remain on until all new messages have
Press MENU
been viewed. Within the Received Messages menu unread messages are preceded by a ∗.
Use up/down
keys to select
Use up/down
keys to select
SMS
Received
Messages
Select
message to
view
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Figure 4.44 – Viewing received SMS message
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4.2.9.2 Sending SMS Messages
SMS messages are sent from MENU | SMS | MSG EDIT. Use the alph-numeric keypad to enter the desired text, then enter the destination ID or select it from the
Press MENU
index.
Sending SMS messages may be disabled by radio programming. When SMS is disabled, SENT MESSAGES and MSG EDIT will not appear on the SMS menu. The radio will still receive SMS and you can view received messages.
Use up/down
keys to select
Use up/down
keys to select
SMS
Msg Edit
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
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Key in
message and
press OK
destination ID or use INDEX
then press
Enter
SEND
Figure 4.45 – Sending SMS message
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4.2.9.3 Receiving Predefined Messages
When a predefined message is received, the corresponding text is pulled from the database and displayed along with the source ID. You may also view the last ten received predefined messages from MENU | PREDEFINED MESSAGES | RECEIVED MESSAGES.
Figure 4.46 – Received predefined message
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OPERATION MANUAL
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4.2.9.4 Sending Predefined Messages
Predefined messages are sent from MENU | PREDEFINED MESSAGES | MESSAGE LIST. Select the desired message from the list then enter the destination ID or select it from the index.
Press MENU
Sending predefined messages may be disabled in radio programming. When predefined messages are disabled, the
Use up/down
keys to select
Predefined
Messages
message list may still be viewed, but predefined messages can’t be sent.
Use up/down
keys to select
Message List
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
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Use up/down
to select
message and
press
Enter
SEND
SELECT
destination ID or use INDEX
then press
Figure 4.47 – Sending predefined message
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4.2.9.5 Setting Current Status
The radio’s current status may be set from MENU | STATUS | PRESENT STATUS or by pressing
the (pound) key repeatedly until “CUR. STATUS:” is prompted.
When the radio is turned on, the present status will be reset to the first status option in the list.
4.2.9.6 Receiving Status
When a status message is received, the corresponding text is pulled from the database and displayed along with the source ID. You may also view the last ten received status messages from MENU | STATUS | RECEIVED STATUS.
Press MENU
Use up/down
keys to select
Use up/down
keys to select
Use up/down
keys to select
new status then press
Status
Present
Status
SELECT
Figure 4.48 – Selecting current status
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
Figure 4.49 – Receiving status
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4.2.9.7 Sending Status
Your current status may be sent from MENU | STATUS | SEND STATUS. Enter the destination ID or use the index to select it, then press SEND to transmit your current status.
Transmitting status may be disabled in radio programming. When status transmissions are disabled, SEND STATUS and STATUS REQUEST will not appear on the STATUS menu.
Press MENU
Use up/down
keys to select
Use up/down
keys to select
Send Status
Status
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
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Enter unit ID
or use INDEX
then press
SEND
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Figure 4.50 – Sending status
4.2.9.8 Requesting Status
You may request the current status of another radio from MENU | STATUS | STATUS REQUEST. Enter the destination ID or select it from the index, then press SEND to request another radio’s status.
Transmitting status may be disabled in radio programming. When status transmissions are disabled, SEND STATUS and STATUS REQUEST will not appear on the STATUS menu.
Press MENU
Use up/down
keys to select
Use up/down
keys to select
Status
Status
Request
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
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Enter unit ID
or use INDEX
then press
SEND
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Figure 4.51 – Requesting status
4.2.10 Channel Programming
Front panel channel programming is an option offered to some customers. Radios must be purchased with channel programming capability or returned to the factory to have the capability added.
On channel programming capable radios, the channel parameters may be edited or created from the radio’s alpha-numeric keypad. Channel programming may be chosen from MENU | CHANNEL PARAMETERS | CHANNELS. Enter the channel edit password then press OK. Choose the appropriate channel then press SELECT. Then change the appropriate parameters.
The channel programming access password is set in radio programming. This password is independent of the power-on password.
Channel programming may be disabled in radio programming. When channel programming is disabled, CHANNEL will not appear on the CHANNEL PARAMETERS menu.
Press MENU
Use up/down
to select Channel
Parameters
Use up/down
to select
Channels
Enter
password
then press
OK
Use up/down
to select
channel to be
edited
Use up/down
to select
parameter to
edit, then
save changes
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
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Figure 4.52 – Channel programming
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1
1
1
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4.3 Menu Operation
The menu function is used to access many features in the radio and also provides information about each radio. The features available from the menu depend on the analog/digital mode selection and the radio programming. The following menu trees depict the available menu selections, but some may not be accessible on your radio because of radio programming. The numbers shown may be used as keypad shortcuts to the menu option.

4.3.1 Analog Mode Menu Tree

MENU
1 SETTINGS
11 TONES
12 ILLUMINATION – Change backlighting & Transmit/Receive LED, on/off/auto
13 DISPLAY
14 ACCESSORY
15 PASSWORD
16 SERIAL PORT–Select serial port type, data/GPS select data to program 17 SQUELCH – Adjust analog squelch level
18 GREETING MSG – Edit turn-on greeting message
19 FACTORY SETTINGS
note
111 ALERT TONE – Adjust user alert tone volume
112 CALL ALERT – Adjust call alert tone volume
113 KEYPAD TONE – Adjust key press tone volume
note
note
131 DISPLAY DIRECTION (portable only) – Invert display, normal/invert
133 CONTRAST – Adjust contrast
134 COLOR – Change backlight color
141 EXTERNAL ACCESSORY – Use external accessory, yes/no
142 MICROPHONE SENSITIVITY (mobile only) – Set mic sensitivity
143 VOX (portable only)
VOX MODE – Enable VOX, on/off
VOX LEVEL ADJUST – Adjust VOX threshold
151 PASSWORD QUERY – Enable turn-on password, on/off
152 PASSWORD CHANGE – Change turn-on password, enter & confirm
note
note
191 RESTORE SETTINGS – Restore settings menu items to factory settings
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6
6 RADIO INFO
61 IDENTS
SERIAL NO – View radio serial number
ANI, SC, ACK – View analog IDs
IDENT – View digital unit ID
RADIO NAME
TERMINAL IP-ID – View IP address
SYSTEM NO – View system ID
WACN – View wide area communication network ID
62 SOFTWARE
VERSION – View microcontroller flash version
DSP VERSION – View DSP flash version
63 HARDWARE
UNIT, RF CARD, FRONT – View PCB assembly versions
DSP, ENCRYPT, BAND – View PCB assemly & encryption versions & band
64 BATTERY INFO (portable only) (for OEM rechargeable batteries)
CHARGE, COUNT – View remaining battery capacity & charge cycle count
VOLT, CURR, TEMP – View battery voltage, current & temperature
TYPE – View battery type
65 MEASUREMENT
651 RSSI – Measure receive signal strength
652 GPS – View present GPS data
653 POWER SUPPLY – Measure supply voltage
7 CHANNEL PARAMETERS
71 CHANNEL SCAN – View & edit current zone’s scan list
72 GROUPS – View & select new talk group from list
73 GROUP SCAN – Enable talk group scan (receive any talk group in list), on/off
74 CHANNELS – View & edit channel programming
75 ZONES – View & select zone
76 CLONER – Clone channel parameters to another radio
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1
1
1
1
1
2
3
3

4.3.2 Digital Mode Menu Tree

MENU
1 SETTINGS
11 TONES
12 ILLUMINATION – Change backlighting & Transmit/Receive LED, on/off/auto
13 DISPLAY
14 ACCESSORY
15 PASSWORD
16 SERIAL PORT–Select serial port type, data/GPS select data to program 17 SQUELCH – Adjust analog squelch level
18 GREETING MSG – Edit turn-on greeting message
19 FACTORY SETTINGS
2 CALL LOG – View last ten caller IDs and last ten called IDs
3 SMS
31 RECEIVED MESSAGES – View last twenty received SMS
32 SENT MESSAGES – View last ten sent SMS
33 MSG EDIT – Key & send new SMS
note
111 ALERT TONE – Adjust user alert tone volume
112 CALL ALERT – Adjust call alert tone volume
113 KEYPAD TONE – Adjust key press tone volume
note
131 DISPLAY DIRECTION (portable only) – Invert display, normal/inverse
133 CONTRAST – Adjust contrast
134 COLOR – Change backlight color
141 EXTERNAL ACCESSORY – Use external accessory, yes/no
142 MICROPHONE SENSITIVITY (mobile only) – Set mic sensitivity
143 VOX (portable only)
VOX MODE – Enable VOX, on/off
VOX LEVEL ADJUST – Adjust VOX threshold
151 PASSWORD QUERY – Enable turn-on password, on/off
152 PASSWORD CHANGE – Change turn-on password, enter & confirm
note
191 RESTORE SETTINGS – Restore settings menu items to factory settings
note
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note
note
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4
4
4 PREDEFINED MESSAGES
41 RECEIVED MESSAGES – View last ten received messages
42 SENT MESSAGES – View last ten sent messages
43 MESSAGE LIST – View and send predefined message
5 STATUS
51 PRESENT STATUS – View and set present status
52 SEND STATUS – Send present status to another radio
53 STATUS REQUEST – Request another radio’s present status
54 RECEIVED STATUS – View last ten received status messages
6 RADIO INFO
61 IDENTS
SERIAL NO – View electronic serial number
ANI, SC, ACK – View analog IDs
IDENT – View digital unit ID
RADIO NAME
TERMINAL IP-ID – View IP address
SYSTEM NO – View system ID
WACN – View wide area communication network ID
62 SOFTWARE
VERSION – View microcontroller flash version
DSP VERSION – View DSP flash version
63 HARDWARE
UNIT, RF CARD, FRONT – View PCB assembly versions
DSP, ENCRYPT, BAND – View PCB assemly & encryption versions & band
64 BATTERY INFO (portable only) (for OEM rechargeable batteries)
CHARGE, COUNT – View remaining battery capacity & charge cycle count
VOLT, CURR, TEMP – View batter voltage, current and temperature
TYPE – View battery type
65 MEASUREMENT
651 RSSI – Measure receive signal strength
652 GPS – View present GPS data
653 POWER SUPPLY – Measure supply voltage
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note
note 5
note 5
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Syn-Tech III P25 Mobile Radio
7
6
OPERATION MANUAL
note
7 CHANNEL PARAMETERS
note 1
71 CHANNEL SCAN – View & edit current zone’s scan list
72 GROUPS – View& select new talk group from list
73 GROUP SCAN – Enable talk group scan (recieve any talk group in list), on/off
74 CHANNELS – View & edit channel programming
75 ZONES – View & select zone
76 CLONER – Clone channel parameters to another radio
8 ENCRYPTION
81 ALGORITHM – View and select available encryption types
82 ENCRYPTION INFO – View encryption information, Algorithm ID and Key ID
These selections are unavailable when the Settings option is disabled in radio
note
programming.
note 2
This selection is unavailable when the Call Log option is disabled in radio
programming.
note 3
These selections are unavailable when the SMS option is disabled in radio
programming.
note 4
These selections are limited or unavailable when the Pr edefined Messages
option is disabled in radio programming.
note 5
These selections are unavailable when the Status option is disabled in radio
programming.
note 6
This selection is unavailable when the Channel Programming option is
disabled in radio programming.
note 7
This selection is only available when encryption option is purchased.
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5 ACCESSORIES
Original Midland accessories give you operational efficiency, flexibility and reliability in difficult working conditions.
ACCESSORY MIDLAND P/N
Syn-Tech III P25 Mobile Radio
OPERATION MANUAL
Microphone
Loudspeaker
Under dash mounting kit
Trunk mounting kit
Power cable assembly
Programming software
Programming cable
Cloning kit
Test and alignment adaptor
ACC4425
ACC1425
560-090-0091
90-0042
ACC2600
ACC2305
ACC2205
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6 STORAGE AND CLEANING PRECAUTIONS

Keep the radio clean and away from dust, humidity, dense sunlight, extreme heat sources and liquids.
Avoid exposing the radio and accessories to cleaning solvents, aerosol sprays, adhesive agents, paints etc. Chemical reactions with such agents will destroy seals, case, display and finish.
If the radio is exposed to dirt, wipe with a soft and moist cloth at least once a week to prevent build-up of dirt and dust deposits.
Your radio does not require any periodic maintenance.
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7 TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE(s) SOLUTION(s)
No display on LCD when radio is turned on.
No sound from Loudspeaker
No response to key press.
Fuse is blown or connections are insecure.
Volume level is too low. or Squelch level is too high. or Radio is set for external accessory.
Check fuse and connections.
Adjust volume level. or Adjust squelch level. or Turn off external acc. or Check speaker connections
Key lock is on. Unlock the keypad.
Switch to H (High) output power. or Move closer until you have a “line-of-sight” to the other
No answer to calls.
Out of range of other stations or signal is blocked by terrain.
station.
Radio to PC connection fails.
Serial port is set for GPS receiver.
Change serial port selection to “DATA”.
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8 SPECIFICATIONS
GENERAL SPECIFICATIONS
Modulation 16K0F3E, 11K0F3E , 8K0D1E, 8K0F1E Data Rate P25 : 9.6 kb/s Symbol Rate P25 : 4.8 kb/s Protocol Project 25-CAI : 4.4 kb/s IMBE Encryption Algorithms DES-OFB, AES Channel Capacity 999 Operating Voltage Range
13.6 Vdc ± % 20 (10.88-16.32 Vdc)
Standby Current Drain (backlight off) ≤ 0.4 A RX Current Drain ≤ 1.5 TX Current Drain ≤ 8.5 A Display 64x128 pixel LCD Keypad 20 key, back lit Dimensions (HxWxL) (projections not included) 1.8x6.5x6.5 in (46x165x165 mm) Weight 1.50 kg
ENVIROMENTAL SPECIFICATIONS
Operating Temperature Range Storage Temperature Range Humidity
-30°C / +60°C
-40°C / +85°C
% 95, 50°C
ESD IEC 801- 2KV Water and Dust Protection IP65, MIL-STD
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MILITARY STANDARDS 810C/D/E/F
MIL-STD 810C MIL-STD 810D MIL-STD 810E MIL-STD 810F Method
Proc./
Cat.
Method
Proc./
Cat.
Method
Proc./
Cat.
Method
Proc./
Cat.
Low Pressure 500.1 I 500.2 II 500.3 II 500.4 II High Temperature 501.1 I, II 501.2
Low Temperature 502.1 I 502.2 Temperature
Shock
503.1 – 503.2 I/A1-C2 503.3 I/A1-C2 503.4 I/Hot-C2
I/A1, II/A1
I/C1, II/C2
501.3
502.3
I/A1, II/A1
I/C1, II/C2
501.4
502.4
I/Hot, II/Hot
I/C1, II/C2
Solar Radiation 505.1 II 505.2 I 505.3 I 505.4 I Rain 506.1 I, II 506.2 I, II 506.3 I, II 506.4 I, III Humidity 507.1 II 507.2 II 507.3 II 507.4 – Salt Fog 509.1 – 509.2 – 509.3 – 509.4 – Sand and Dust 510.1 I 510.2 I, II 510.3 I, II 510.4 I, II
Vibration 514.2
VIII/F,
XI/H
514.3 I/10, II/3 514.4 I/10, II/3 514.5 I/24, II/5
Shock 516.2 I, II, V 516.3 I, V, VI 516.4 I, V, VI 516.5 I, V, VI
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8.1 Receiver Technical Specifications

RECEIVER SPECIFICATIONS
VHF UHF Frequency Range 136-174 MHz 380-470 MHz Frequency Separation Full Bandsplit Full Bandsplit Channel Spacing 12.5 / 20 / 25 / 30 kHz 12.5 / 20 / 25 / 30 kHz Frequency Step 2.5 / 3.125 kHz 2.5 / 3.125 kHz Rated Audio Output Power * 7.5 W / 8 Ω 7.5 W / 8 Ω
Frequency Stability * (-30°C / +60°C; 25°C ref)
Analog Sensitivity * 12 dB SINAD Digital Sensitivity ** 5% BER 1% BER
Adjacent Channel Rejection Analog 25 kHz channel * Analog 12.5 kHz channel * Digital 12.5 kHz channel **
± 2.5 ppm ± 1.5 ppm
≤ -119 dBm
≤ -120 dBm ≤ -117 dBm
≥ 75 dB ≥ 63 dB ≥ 63 dB
≤ -118 dBm
≤ -119 dBm ≤ -116 dBm
≥ 75 dB ≥ 63 dB ≥ 63 dB
Intermodulation Rejection * ≥ 75 dB ≥ 75 dB Spurious Response Rejection* ≥ 85 dB ≥ 85 dB
Hum and Noise Ratio Analog 25 kHz channel * Analog 12.5 kHz channel * Digital 12.5 kHz channel **
≥ 48 dB ≥ 42 dB ≥ 50 dB
≥ 42 dB ≥ 36 dB ≥ 50 dB
Audio Distortion * ≤ 3 % ≤ 3 %
* Measured in the analog mode per EIA-603 under nominal conditions. ** Measured in the digital mode per TIA-102.CAAA under nominal conditions.
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8.2 Transmitter Technical Specifications
TRANSMITTER SPECIFICATIONS
VHF UHF Frequency Range 136-174 MHz 380-470 MHz Frequency Separation Full Bandsplit Full Bandsplit Channel Spacing 12.5 / 20 / 25 / 30 kHz 12.5 / 20 / 25 / 30 kHz Frequency Step 2.5 / 3.125 kHz 2.5 / 3.125 kHz Rated RF Output Power * 5-50 W 5-40 W
Frequency Stability * (-30°C / +60°C; 25°C ref)
Modulation Limiting * Analog 25 kHz channel Analog 12.5 kHz channel
C4FM Modulation Fidelity ** RMS Error C4FM Deviation
Spurious Emissions * (Conducted and Radiated)
± 2.5 ppm ± 1.5 ppm
± 5.0 kHz ± 2.5 kHz
± 5.0 kHz ± 2.5 kHz
≤ 2 %
1800 ±100 Hz
≤ 2 %
1800 ±100 Hz
≤ -70 dBc ≤ -70 dBc
Audio Frequency Response * (6 dB/Octave Pre-emphasis
+1, -3 dB +1, -3 dB
from 300 to 3000 Hz) Hum and Noise Ratio
Analog 25 kHz channel * Analog 12.5 kHz channel *
≥ 52 dB ≥ 46 dB
≥ 46 dB ≥ 40 dB
Audio Distortion * ≤ 1 % ≤ 1 %
* Measured in the analog mode per EIA-603 under nominal conditions. ** Measured in the digital mode per TIA-102.CAAA under nominal conditions.
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9 WARRANTY STATEMENT
Midland Radio Corporation (herein, Midland) warrants each new radio product manufactured or supplied by it to be free from defects in material and workmanship under normal use and service for a period listed below, provided that the user has complied with the requirements stated herein.
The Warranty period begins on the date of purchase from an Authorized Midland Sales and Service Outlet. This Warranty is offered to the original end user and is not assignable or transferable. Midland is not responsible for any ancillary equipment attached to or used in conjunction with Midland products.
Midland offers to the original end user a Two (2) Year Limited Warranty on Midland Business and Industrial radio products. Accessories carry a One (1) Year Limited Warranty.
During this period, if the product fails to function under normal use because of manufacturing defect(s) or workmanship, it should be returned to the Authorized Midland Sales and Service Outlet from which it was purchased. The Sales and Service Outlet will repair the product or return the product for repair to Midland or its Authorized Repair Depot. The user is responsible for the payment of any charges or expenses incurred for the removal of the defective product from the vehicle or other site of its use; for the transportation of the product to the Sales and Service Outlet; for the return of the repaired / replacement product to the site of its use and for the reinstallation of the product.
Midland shall have no obligation to make repairs or to cause replacement required, which results from normal wear and tear or is necessitated in whole or in part by catastrophe, fault or negligence of the user, improper or unauthorized alterations or repairs to the Product, incorrect wiring, use of the Product in a manner for which it was not designed or by causes external to the Product. This Warranty is void if the product serial number is altered, defaced or removed.
Midland’s sole obligation hereunder shall be to replace or repair the Product covered in this Warranty. Replacement, at Midland’s option, may include a similar or higher-featured product. Repair may include the replacement of parts or boards with functionally equivalent reconditioned or new parts or boards. Replaced parts, accessories, batteries or boards are warranted for the balance of the original time period. All replaced parts, accessories, batteries or boards become the property of Midland.
THE EXPRESS WARRANTIES CONTAINED HEREIN ARE IN LIEU OF ALL OTHER WARRANTIES, EITHER EXPRESSED OR IMPLIED OR STATUTORY, INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
FOR ANY PRODUCT WHICH DOES NOT COMPLY WITH THE WARRANTY SPECIFIED, THE SOLE REMEDY WILL BE REPAIR OR REPLACEMENT. IN NO EVENT WILL MIDLAND BE LIABLE TO THE BUYER OR ITS CUSTOMERS FOR ANY DAMAGES, INCLUDING ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES, OR FOR THE LOSS OF PROFIT, REVENUE OR DATA ARISING OUT OF THE USE OF OR THE INABILITY TO USE THE PRODUCT.
This warranty is void for sales and deliveries outside of the U. S. A. and Canada.
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