TMC Radio SRP9170 User manual

SRP9170/80 Series
FM VHF/UHF Portable
Radio Transceiver
SERVICE MANUAL
TNM-M-E-0023
ISSUE 1.00
Mar 2009

SRP9170/80 Series FM VHF/UHF Portable Transceiver TNM-M-E-0023 ~ Issue 1.00

TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00
Page i
Table of Contents
1. INTRODUCTION ............................................................................................................................. 1.1
1.1 G
ENERAL
..................................................................................................................................... 1.1
1.2 S
COPE
......................................................................................................................................... 1.1
1.3 D
ESCRIPTION
............................................................................................................................... 1.1
1.4 P
RODUCT
V
ARIANTS
A
ND
F
ACILITIES
............................................................................................. 1.2
1.5 S
OFTWARE
V
ERSIONS AND
N
AMING
C
ONVENTION
.......................................................................... 1.5
1.5.1 Filename Structure............................................................................................................. 1.5
1.5.2 Application Code ................................................................................................................ 1.5
1.5.3 Software Type Code .......................................................................................................... 1.5
1.5.4 Version Number ................................................................................................................. 1.6
1.5.5 Exclusions.......................................................................................................................... 1.6
1.5.6 Displaying Software Versions ............................................................................................ 1.6
1.5.7 Automatic Version Upgrade Prompting.............................................................................. 1.7
1.5.8 Wailing Siren (Boot-up Software Corrupted)...................................................................... 1.8
1.6 A
DJUSTMENT AND
A
LIGNMENT
...................................................................................................... 1.9
1.7 S PECIFICATION ............................................................................................................................. 1.9
1.7.1 General .............................................................................................................................. 1.9
1.7.2 Transmitter....................................................................................................................... 1.10
1.7.3 Receiver ........................................................................................................................... 1.11
1.7.4 Signalling.......................................................................................................................... 1.12
1.7.5 Environmental .................................................................................................................. 1.16
2. SERVICE PHILOSOPHY ................................................................................................................ 2.1
2.1 S
ERVICE
C
ONCEPT
....................................................................................................................... 2.1
2.2 W
ARRANTY
.................................................................................................................................. 2.1
2.2.1 Service Within and Out Of Warranty.................................................................................. 2.1
2.2.2 Ancillary Items.................................................................................................................... 2.1
2.3 S
OFTWARE
P
OLICY
....................................................................................................................... 2.1
3. DISASSEMBLY............................................................................................................................... 3.1
4. TECHNICAL DESCRIPTION .......................................................................................................... 4.1
4.1 R
ECEIVER
.................................................................................................................................... 4.1
4.1.1 Front-End Filters and RF Amplifier .................................................................................... 4.1
4.1.2 First Mixer and IF Section .................................................................................................. 4.2
4.1.3 IQ Demodulator.................................................................................................................. 4.2
4.1.4 Receiver Audio Processing................................................................................................ 4.2
4.2 T
RANSMITTER
.............................................................................................................................. 4.3
4.2.1 Drivers and PA Stages....................................................................................................... 4.3
4.2.2 Power Control .................................................................................................................... 4.4
4.2.3 Antenna Switch and Harmonic Filter.................................................................................. 4.4
4.2.4 Transmitter Audio Processing............................................................................................ 4.4
4.3 P
HASE
-L
OCKED LOOP
(PLL) F
REQUENCY
S
YNTHESISER
............................................................... 4.5
4.3.1 General .............................................................................................................................. 4.5
4.3.2 Integrated Synthesiser ....................................................................................................... 4.5
4.3.3 VCOs.................................................................................................................................. 4.6
4.3.4 Negative Bias Generator and Loop Filter........................................................................... 4.6
4.3.5 Phase Modulator ................................................................................................................ 4.6

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4.3.6 Reference Oscillator ...........................................................................................................4.7
4.4 S
YSTEM
C
ONTROLLER
..................................................................................................................4.7
4.4.1 DSP and PLA......................................................................................................................4.7
4.4.2 DSP Clock Oscillator ..........................................................................................................4.8
4.4.3 PLA PWM ...........................................................................................................................4.8
4.4.4 Digital I/O ............................................................................................................................4.9
4.4.5 System Memory..................................................................................................................4.9
4.4.6 Serial Data Interface.........................................................................................................4.10
4.5 P
OWER
S
UPPLIES
.......................................................................................................................4.11
4.5.1 Power On Function ...........................................................................................................4.11
4.5.2 Power Supply Detail..........................................................................................................4.12
4.6 K
EYBOARD AND
G
RAPHIC
D
ISPLAY
MMI......................................................................................4.13
4.6.1 Keypad..............................................................................................................................4.13
4.6.2 LCD Assembly Interface...................................................................................................4.13
4.6.3 MMI Interface Signals .......................................................................................................4.14
4.6.4 Function Keys ...................................................................................................................4.15
5. ALIGNMENT (LEVEL 3 SERVICE ONLY) ......................................................................................5.1
5.1 T
EST
E
QUIPMENT
..........................................................................................................................5.1
5.2 T
EST
S
ET
-
UP
................................................................................................................................5.2
5.2.1 COMMS Set up...................................................................................................................5.3
5.2.2 Radio Preparation...............................................................................................................5.5
5.2.3 Alignment Procedure ..........................................................................................................5.6
6. REPLACEABLE PARTS..................................................................................................................6.1
6.1 C
OMMON
P
ARTS
...........................................................................................................................6.1
6.2 A
CCESSORIES
...............................................................................................................................6.1
APPENDIX A - ACCESSORY CONNECTOR.............................................................................................. A
APPENDIX B - ACCESSORIES................................................................................................................... B
Declaration
The performance figures quoted are subject to normal manufacturing and service tolerances. The right is reserved
to alter the equipment described in this manual in the light of future technical development.
Copyright
All rights reserved. No part of this publication may be reproduced in any form or by any means without the prior
permission of TMC Radio.

TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00
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Errors and Omissions
The usefulness of this publication depends upon the accuracy and completeness of the information contained
within it. Whilst every endeavour has been made to eliminate any errors, some may still exist. It is requested that
any errors or omissions noted should be reported to:
Product Engineering
TMC Radio Pty Ltd.
1270 Ferntree Gully Road
Scoresby Victoria
3179 Australia
Ph: [phone]
Fax: [phone]
e-mail: [e-mail]
http://www.tmcradio.com/

TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00
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Document History
Issue Date Comments
Draft 1.00 2009-03-31 Initial issue.
List of Associated Publications
Document No. Description Issue
TNM-U-E-0088 SRP9180 PMR Brief User Guide. 1
TNM-U-E-0089 SRP9180 PMR Operating Instructions. 1
TNM-U-E-0090 SRP9180 TMR Operating Instructions. 1
TNM-U-E-0091 SRP9180 P25 Operating Instructions. 1

TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00
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Warnings and Cautions
Caution
Customer configuration files should be saved prior to any alignment adjustments.
Preparing the radio for alignment will erase from the radio all customer PMR and Trunking
configuration data (channel, signalling information etc). The only data retained by the Alignment
Tool is the factory alignment data for the radio (DAC settings for Tx power, front-end tuning etc).
WARNING
SRP9170/80 radio equipment is to be connected to TMC approved chargers and accessories only.
WARNING
Do not dispose of batteries in a fire or expose them to high temperatures.
WARNING
Do not operate your radio, without a handsfree kit, whilst driving a vehicle.
WARNING
Do not operate your radio in an explosive atmosphere. Obey the “Turn Off Two-way Radios”
signs where these are posted, eg on a petrol station forecourt.
WARNING
Servicing and upgrades of IECEx approved Intrinsically Safe radios and accessories must only
be carried out by TMC Radio Pty Ltd IECEx Intrinsically Safe trained staff, at locations that have
been IECEx approved. Please contact TMC Radio Pty Ltd for your nearest Service Department.

TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00
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IECEx Intrinsic Safety
Radio models approved for use in hazardous environments according to the IECEx scheme are marked with the
approval number XXXXXXXXX, or XXXXXXXXX.
The Intrinsically Safe protection rating for these models are either:
• (Gas) Ex iC IIB T4; and,
• (Dust) Ex tD A 22 IP67 T135
o
C; or,
• (Gas) Ex iC IIA T4; and,
• (Dust) Ex tD A 22 IP67 T135
o
C.
The following MUST be observed to maintain the IECEx protection rating:
a) use only approved Simoco battery (PAR-9180BATL2 or PAR-9180BATL3)
;
b) battery charging must only be carried out in non-hazardous areas, using an approved battery charger;
c) metal belt clips must NOT be used in hazardous areas;
d) it is a requirement that when the radio is used in a hazardous area that either the SRP9180 Accessory
Connector Cover (6102 350 1446) or an approved Simoco IECEx accessory is fitted;
e) approved accessories may only be connected and disconnected outside the hazardous areas;
f) prior to use in a hazardous area, inspect the radio and accessories for signs of damage. Any visible
signs of damage to the radio or accessories may compromise the integrity and safety of the radio. A
damaged radio or accessories must be repaired or replaced prior to use in a hazardous area;
g) incorrect storage, handling or operation of the radio and accessories, as specified in TMC Radio Pty Ltd
published User Guides and Service Manuals, may compromise the safety and integrity of the radio or
accessories;
h) approved labels stating the IECEx rating level must be affixed to the radio and accessories, and must
be legible, before their use in a hazardous area;
i) servicing and upgrades of IECEx approved Intrinsically Safe radios and accessories must only be
carried out by TMC Radio Pty Ltd IECEx Intrinsically Safe trained staff, at locations that have been
IECEx approved. Please contact TMC Radio Pty Ltd for your nearest approved Service Department;
and,
j) substitution of parts or accessories will void the equipments’ IECEx Intrinsic Safety rating.

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GLOSSARY OF TERMS
A summary of common radio terms and some other terms used in this document, and their meanings, are given
below.
3RP Trunking Signalling Specification relating to trunked networks for shared use. Used
primarily for networks in France.
ADC Analogue to Digital Converter.
AFC Automatic Frequency Control.
AGC Automatic Gain Control.
Alarm A Selcall sequence sent from subscriber equipment to indicate an Emergency situation.
When activated the radio will enter a repeating sequence consisting of an Alarm Live
Transmit Time and an Alarm Dead Receive Time.
ANN Abbreviation for Algorithmic Network Numbering. This is the numbering system where the
numbers presented to the radio user can be mapped directly to the MPT1327 PFIX /
IDENTs and vice versa by use of a fixed algorithm in combination with some other
customisation parameters. See also FPP and MEP.
ANI Automatic Number Identification.
Attack Operation
Auto Interrogate An Acknowledge identity sent as a response to an individual reset call.
Automatic Power Feature whereby the transmit power is automatically set to a level determined by the level
of the received signal. This is used to extend the battery life and/or reduce radiated
emissions.
Background Hunting The searching for an alternative and 'better' control channel whilst already on a valid
control channel.
BCAST MPT1327 broadcast message. Used to transmit information about the trunked radio
system to radio units.
BPF Band-Pass Filter.
Busy The state of a channel such that:
• for a non-signalling channel - if Busy this means that the carrier is above squelch;
• for a channel with CTCSS / DCS - if Busy this means a signal is being received
with either no CTCSS tone / DCS code or the correct CTCSS tone / DCS code;
and,
• for a channel with Selcall - if busy this means a closed channel where the signal is
above squelch.
A feature that equates to 'Do Not Disturb' such that the radio will reject all non-
emergency calls. This feature can be activated using the busy key (if assigned) or
from a menu; it is reset to disabled at switch on.
C4FM Compatible 4-Level Frequency Modulation.
Call Back A request, sent by the dispatcher, to a unit requesting that the unit calls the dispatcher
back.
CCSC Control Channel System Codeword.

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Channel Spacing The distance (in Hz) between the defined frequency channels.
CHEKKER System Interface Specification for Trunked Networks in Germany.
CLIM Call Limit Time; time limit on calls made. Normally this is defined by the Call Time Limit
parameter but can by overridden by the TSC depending upon the setting of TSCLIM.
CLIME Emergency Call Limit Timer.
Closed A state where transmit and receive are not allowed until a Selcall message to open the
channel has been received. A Closed Channel is one that defaults (when selected or after
timed reset) to its closed state. Contrast with Open. Normally a Closed channel would
have Selcall Mute and PTT Inhibit would be enabled.
CODEC COde (Analogue to Digital Converter) / DECode (Digital to Analogue Converter).
Community Repeater A communications set-up whereby different groups of radios can operate by using only
one base station. This is achieved by the use of CTCSS tone signalling such that each
group has a different CTCSS tone (encode and decode) and radios can only
communicate with other radios in their group. Only one group of radios can use the base
station at any one time.
Continuous Control Channel
A continuous control channel is one that is only used by one site. There are no breaks in
the transmission of signalling. Emergency Call Time Limit.
Control Channel A channel used for the transmission of messages that enables the TSC to control radios.
Control channels may either Continuous or Timed Shared.
Control Channel Burst A feature that enables control channel burst transmissions on systems using time-shared
control channels. It is unavailable if the control channel acquisition type is not 'Time
Shared'. To make available: go to Control Channel Acquisition Type and set to Time-
shared.
CRU Central Repair Unit.
CTCSS CTCSS stands for Continuous Tone Controlled Squelch System. A continuous tone
(lower than the audio range of the receiver) is modulated onto the carrier as well as other
signalling or voice traffic. Only receivers that have been programmed to recognise the
same CTCSS tone are able to receive the transmissions, since the squelch of receivers
looking for different CTCSS tones prevents the audio from being heard. This provides a
simple method of sending messages to selected receivers and allows several different
networks to use the same frequency. CTCSS is also known as Tone Lock or Tone
Squelch.
DAC Digital to Analogue Converter.
Dash (-) digits Digits known as 'No Tone' digits used in Selcall Identities.
DCS Digital Coded Squelch system is based on sending a continuous stream of binary code
words using low deviation, direct frequency shift keying. Only receivers which have been
programmed to recognise the same DCS sequence are able to open their squelch and
receive the associated speech transmissions. This provides a simple method of sending
messages to selected receivers only and allows several different networks to use the
same frequency. DCS is also known as CDCSS.
Decode Reception of signalling, either Selcall, where encoded tone frequencies are decoded and
identified as specific tones digits, or CTCSS/DCS, where tones are analysed to see if the
channel should be opened.
Demanded Demanded Registration; a procedure in which the TSC forces a single radio unit to
attempt registration immediately (providing the radio is not already attempting to register).

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Disabled The 'False' state of a parameter. That indicates this parameter is not active. Typically this
state is represented by an unmarked check box. Compare with Enabled.
DSP Digital Signal Processor.
DTMF Abbreviation of Dual Tone Multi-Frequency signalling. Used to dial into Telephone
networks using tone dialling.
Dual Watch A facility that enables the Radio to periodically monitor another channel for a signal above
squelch. Typically applications are checking an emergency channel whilst on another
channel.
Economiser A process by which the Receiver is powered down whilst there is no received signal.
Periodically the receiver is powered up to check for such a signal. This is used to extend
the battery life of a portable.
EDM Extended Data Message (MPT1327).
Enabled The 'True' state of a parameter that indicates this parameter is active. Typically this state
is represented by a mark (either a tick or a cross) in a check box.
Encode Transmission of signalling, either Selcall where Selcall tone digits are encoded into tone
frequencies, or CTCSS/DCS where sub-audible signals modulated onto the carrier.
ETSI European Technical Standard Institute.
Fallback A mode of operation that may be entered when the Network is suffering a malfunction.
During this mode certain facilities (e.g. PSTN) may not be available.
FFSK Fast Frequency Shift Keying. This is a signalling system for the transfer of digital
information. It works by using one of two audio tones to represent data, 1 or 0 being
transmitted.
Fleet A group of units formed such that only a shortened form of dialling (2 or 3 digits) is
required between them. These groups are normally assigned contiguous IDENTs.
FOACSU Full Off Air Call Set Up. A method of call set-up where the calling party has to manually
answer the incoming call before the trunking system will allocate a traffic channel to the
call. This reduces the loading on traffic channels as it prevents them being allocated to
calls when the called party is not present to deal with the call.
PLA Programmable Logic Array.
FPP Field Personality Programmer.
Hash (#) digits These digits are used for two purposes:
• for Selcall identities (encode and decode) - known as User Id digits. These digits are
replaced by the user id entered at switch on (if enabled); and,
• use in DTMF dialled strings - their use is network dependent to access special
services.
IDENT A 13 bit number used for Identification purposes. Associated with a Prefix (PFIX) this
forms a 20-bit address which is used for identification purposes in signalling between the
radio and the trunking system.
Identity Name given to a sequence of tones that is used in sequential tone signalling. See Valid
Selcall Digits.
Idle State The state of the radio when it is not in a call.
Inaccessible A state of a channel such that it is unavailable to the user through normal methods of
channel selection. Therefore inaccessible channels will not appear on the channel menu.
Include Calls These types of calls are used to allow a 3rd party to join into an existing call.

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IS Intrinsically Safe.
LCD Liquid Crystal Display.
Link Establish Time A delay incorporated into the start of every selective call or DTMF transmission
that allows for the finite delay of the radio equipment in responding to any radio signal.
This includes both the commencement time of the originating transmitter and the
response time of the receiver.
Locked A state of a channel whereby it is not possible to change channels using the normal
up/down keys on the channel menu until the OK key is pressed. See Auto Channel
Selection Lock.
MAP27 Mobile Access Protocol for MPT1327 equipment.
MEP Miniaturisation Extent Parameter. Used in systems that use ANN numbering.
MMI Man-Machine Interface.
Modifier Part of a dialled string that modifies the nature of the call made to a number (e.g. dialling
"*9" before the number that is to be dialled will modify the call to be an emergency call).
MPT1327 A signalling standard for Trunked Private Land Mobile Radio Systems. Defined for
systems in the UK but also used outside the UK. Issued January 1988.
MPT1343 A System Interface Specification for commercial Trunking networks. Defined for systems
in the UK but also used outside the UK. Issued January 1988.
Multiax CTCSS based multi channel sharing system.
Noise Blanker A circuit designed to reduce automotive ignition interference.
NDD Network Dependent Data. This is a field within the CCSC codeword that is used by the
trunking system to identify information about the trunking network and, in particular,
information specific to the site that is radiating the control channel. It is used by the radio
when it is acquiring a control channel to identify valid channels.
Nuisance Delete
Null Id A Selcall identity that is not defined and whose tones' field is displayed as a blank.
Open A state where transmit and receive are allowed. The channel is no longer open when
reset.
Normally an Open channel would not have Selcall Mute and PTT Inhibit would be
disabled.
OPID Network Operator Identity used in Regional Systems. See Roaming.
PABX Private Automatic Branch Exchange.
Password An optional password system available on the radio. This feature is only available if the
radio does has a display and a keypad. To make available: go to Hardware Components,
Terminal Settings and set Product Type to one which has a display and a keypad.
PFIX The 7 most significant bits of an MPT1327 address number. Normally same fleet units
have same prefix. Relates to individual and group address numbers.
PiN Diode P-type intrinsic N-type diode. Type of diode used for RF switching.
PLL Phase-Locked Loop.
PMR Private Mobile Radio (not normally trunked).
Priority Channel A channel in a search group that is scanned between every other channel.

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PSTN Public Switched Telephone Network.
PTT Press To Talk. This is the term given to the operator’s key normally used to commence
transmitting a message.
PTT Inhibit A state whereby transmission using the PTT is not allowed. Also know as Tx Lockout.
PWM Pulse Width Modulation.
Queuing The storing of a Selcall Identity for later transmission.
If inhibited from transmitting a Selcall sequence because the channel is busy then the
radio can queue the Send 1 / Send 2 sequence for later transmission. When a radio unit
is in Queuing mode all incoming calls are stored automatically in a queue for later
examination. The caller is given an indication that the call has been queued by the called
party. The queue will contain the identity of the caller and the status value received (if a
status call). Up to 20 calls may be queued. The Queuing mode may be selected using the
Modes Menu.
Note: Connecting a MAP27 device to a radio that is in queuing mode will disable queuing.
All incoming calls will then be routed both to the radio user interface and to the MAP27
device connected to the radio. Also known as Logging Mode.
Reference Frequency Normally this is generated from a high stability crystal oscillator reference and is divided
digitally in a frequency synthesiser for comparison with other frequency sources, e.g. a
VCO.
Registration Registration is a technique used to ensure that the trunking system knows the location of
radio units that are using the system. This allows the system to set-up calls quickly
without having to search the whole system for the called radio.
Repeat Tone A Selcall tone that is used to replace repeated tones. Fixed at tone E.
Example: an identity entered as '12333' would be sent by the radio as '123E3'.
Reset Resetting is caused by Three Tone Reset, a Remote Reset, and an Individual reset or a
Group reset (Call Types in Decode Identity). When a radio is reset the effect on the radio
will be as follows:
• any Call Alerts will be stopped;
• the Call LED flashing will stop;
• if the channel is in Open mode then the channel is closed;
• the PTT is optionally inhibited (see PTT Inhibit After Reset Sequence);
• in searching - if paused on a Selcall channel then searching resumes; and,
• if the Acknowledge property of a Decode Identity is set to 'Auto Interrogate' or
'Transpond & Auto Interrogate' then the Auto Interrogate encode identity is
transmitted.
Roaming This is a process that allows changing between regional trunking systems which have
different Operator Identities (OPIDs). Not allowed on MPT1343 Systems.
RSSI Received Signal Strength Indicator.
Scanning Process of switching between the channels in the nominated search group in cyclic
sequence, stopping when the search condition (which may be to look for either a free or a
busy channel) is satisfied.
SDM Short Data Message.
Selcall Selective Calling - a system of signalling which allows 'dialling up' of specific mobiles,
portables and controllers. Such a system may be used to pass messages as a data
message to a specific user or group of users. It can be used to provide remote switching
facilities and to provide access control into community repeaters or similar devices.

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Selcall Mute A state of the audio gate whereby the loudspeaker is muted (closed) until a valid Selcall is
received.
Selcall System Selective Calling, uses a tone sequence at the start, and end, of a call to control which
members of a fleet react to the transmission.
SFM Short Form Memory.
Sidetone Sidetone is the audio which can be (optionally) heard when Selcall, DTMF and tone burst
transmissions are made.
Simplex Mode of operation whereby the radio operates as a conventional fixed channel radio
outside the Trunking network.
SINAD Ratio of SIgnal plus Noise And Distortion to noise and distortion expressed in dB.
Squelch System used to prevent weak, unintelligible signals and random noise from being heard
by a radio operator while still allowing intelligible signals to be received normally. This is
accomplished by the use of a threshold below which any received signals are ignored.
Only signals whose signal-to-noise ratio is above the squelch level cause the audio
circuits of the radio to be enabled, with the result that only satisfactory signals are
received. The squelch level is specified in SINAD.
Star (*) digits Digits known as Status or Message digits. These digits are used for three purposes:
• Status Digits for Selcall Identities;
• Wildcard digits in Status strings; and,
• use in DTMF dialled strings - their use is network dependent to access special
services.
Status A feature whereby a radio's status (or usually the status of the radio's user) can be
transmitted and a status message from other radios can be displayed. This operates
through status digits in Selcall identities, either in Encode Identities or Decode Identities
as follows:
Encode Identities: status digits within the identity are used to transmit the current
situation of the radio's user (e.g. "Out To Lunch"); and,
Decode Identities: status digits are looked up in a table (Status Menu) for possible
messages to display.
SW Software.
SYS System Identity Code part of the CCSC.
TCXO Temperature Compensated Crystal Oscillator.
Temporary Temporary Registration; a process carried out by the Dispatcher due to some system
failure that prevents it from carrying out normal registration. The radios will recognise this
temporary registration mode but will otherwise use the network in the same way as if they
were registered. They may be required to re-register when normal registration mode is
resumed.
Three Tone Reset This is a system whereby a call to a user automatically reset all other users in a group.
Example: a call to user '12345' would call 12345 and reset all other users on this channel
with an identity 123nn where n can be any digit 0-9, A-F.
Timed Reset Facility that causes the Radio, after a certain period of time, to restore current channel to
its initial condition e.g. if it was previously searching it will resume searching.
Time Shared A time-shared control channel is one that is used by more than one site. This allows a
wide coverage area to be obtained using only one frequency.

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Page xiii
The forward channel from the TSC to the radio is divided into timeslots. Each site using
the channel is allocated one timeslot in which to transmit and send signalling.
Therefore, when on a timeshared channel, the radio may be able to receive bursts of
signalling from different sites at different signal strengths and may receive periods when
no signalling is received.
Depending on the type of system, the radio may be able to perform transactions with any
site it can receive from or only with a specific site.
TMR Trunked Mobile Radio.
Tone Burst An audio tone is transmitted at the start of transmission to inform a relay (repeater)
station to switch itself on to relay the transmission.
Transpond An Acknowledge identity sent as a response to an individual call.
TRAXYS Air Interface for the PTT Telecom Trunked Radio Network, used in the Netherlands.
TSC Trunking Site Controller. Central control required for the Trunking System to function.
Controls base stations.
Tx Inhibit A facility which prevents the user from transmitting (other than alarms), while the channel
is Busy.
UMP User Memory Plug. A special device that contains the customisation data for the radio. If
this is removed then this can cause the radio to behave in a number of ways.
User Defined Groups These groups are set up by the user (contrast with Dynamic User Groups) when the user
desires to be included, temporarily, in an existing group. Up to 8 groups may be defined
(in addition to the Network group Idents defined by Network Group Numbers). This
feature is only available if User Defined Groups parameter is enabled. These temporary
groups are lost at switch off unless 'Save Groups at Switch Off' is enabled.
User Identity This is a sequence of up to four digits entered by the user when the Radio is switched on,
if this option is programmed. These digits are then substituted into any transmitted Selcall
identity which includes # digits.
VCO Voltage-Controlled Oscillator.
Vote Method used to compare the signal strength on a current channel with another specified
channel and then to choose the channel having the stronger signal.
Voting Feature used during searching when there is more than one channel that satisfies the
required conditions. It involves examining all the channels that satisfy the required
conditions, and then selecting the channel with the highest signal strength.
VOX Voice Operated Transmit.

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Page
1.1
1 - INTRODUCTION
1. INTRODUCTION
1.1 G
ENERAL
The SRP9170/80 series of FM portable radio transceivers are designed for conventional PMR and Trunked
operation in VHF and UHF radio systems.
The transceiver is available in four functional variants. The variants are as follows:
Description PMR/Trunked
Portable Transceiver with no Keypad and Graphic Display. SRP9170
Portable Transceiver with no Keypad and Graphic Display, Intrinsically Safe. SRP9170is
Portable Transceiver with Keypad and Graphic Display. SRP9180
Portable Transceiver with Keypad and Graphic Display, Intrinsically Safe. SRP9180is
1.2 S COPE
This manual provides technical specifications, description and servicing details for the SRP9170/80 series of
portable radio transceivers together with the related accessories.
Unless specifically stated otherwise, the text and illustrations refer to all versions in the series.
1.3 D ESCRIPTION
The design concept utilises wide band analogue techniques for RF transmit and receive circuitry with digital signal
processing of analogue or digital modulation and demodulation. Electronic tuning is used throughout the portable to
eliminate manual tuning and level adjustment.
A Digital Signal Processor (DSP) and a Programmable Logic Array (PLA) are used with other dedicated devices in
the SRP9170/80 to perform the following functions under software control:
• frequency synthesis of all operating frequencies;
• modulation and demodulation of 10 / 12.5 / 20 / 25 kHz FM signals on a per channel basis;
• modem functionality for specified data modulation schemes;
• filtering, pre-emphasis, de-emphasis, limiting, compression, muting, CTCSS, Selcall or any other
frequency or level dependent signal modification;
• serial communications with the Control Ancillaries, Field Programmer and Alignment Tool; and,
• tuning control data for Tx and Rx.
The SRP9170/80 Transceiver comprises a rugged cast internal lightweight alloy chassis that houses two printed
circuit board assemblies and provides all heatsink requirements. The battery clips into the chassis where it is
securely locked via a tensioned clip. Release is achieved by sliding the latch towards the bottom of the transceiver.
The chassis is enclosed in a high impact polycarbonate ABS plastic case that retains the speaker, keypad and
display.
Gaskets fitted around keys, the display, buttons, connectors, switches, and the antenna socket provide a seal
against moisture and dust ingress.
The main PCB assembly comprises a multi-layer board containing all the RF and control circuitry. The display or
man-machine interface (MMI) board is connected via a miniature connector to the main board. Flexible PCBs
connect the speaker and microphone, accessories connector, volume control and channel / zone switch to the main
PCB. Provision is made in the radio for optional plug-in accessories (i.e. for encryption, P25, etc).
The standard battery capacity is 2200 mAh and utilises lithium-ion technology to suit the endurance requirement of
the portable application.
The antenna is connected to the radio via an SMA plug that is mounted in the radio chassis. The antenna flange
provides it with additional rigidity when seated on the radio body.

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1.4 P RODUCT V ARIANTS A ND F ACILITIES
Product variants and facilities are detailed in Table 1-1, Table 1-2 and Table 1-3.
Table 1-1 Common Features for All Variants
Model
Feature 9170 / 9170is 9180 / 9180is
Keys 7 Function keys. All keys
can be customised.
7 Function keys. All keys
can be customised.
Keypad Non keypad. 12 button numeric keypad.
Display LCD 12 character with bit
mapped section and fixed
icons.
Graphic LCD 102 x 64
pixels.
Volume Rotary control. Rotary control.
Zone Rotary control – 3 position. Rotary control – 3 position.
Channel Rotary control – 16 position. Rotary control – 16 position.
Indicators Tri-colour LEDs. Tri-colour LEDs.
Facility connector Yes. Yes.
Frequency Bands* 66 to 88 MHz, 136 to 174 MHz, 335 to 400 MHz,
400 to 480 MHz, 440 to 520 MHz.
Channel Spacing* 10
#
/ 12.5 / 20 / 25 kHz.
Menu driven Yes (limited selections). Yes.
Customisable Menus Yes. Yes.
* Not all combinations are valid or currently available.
#
Requires special hardware build (narrow band filters).

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Table 1-2 Conventional-PMR Variants
Model
Feature 9170 / 9170is 9180 / 9180is
Channels
200 (nominal). 1000.
Signalling
CTCSS / DCS Selcall / FFSK / DTMF. CTCSS / DCS / Selcall / FFSK / DTMF.
Text Messaging
FFSK text messaging display.
Selcall status messaging.
FFSK text messaging display.
Selcall status messaging.
Attack Operation:
Yes. Yes.
DTMF Encode
Pre-defined Encodes via function keys. Pre-defined Encodes via function keys.
Free form encodes via keypad.
PTT Limit Timer with
warning beeps
Yes. Yes.
PTT Inhibit on Busy
Yes. Yes.
Scanning
100 groups with up to 15 channels per
group.
240 groups with up to 15 channels per group.
4 user defined scan groups.
Voting
Up to 50 groups consisting of up to 16
channels per group.
Up to 200 groups consisting of up to 16
channels per group.
Priority Scanning
Yes. Yes.
Nuisance Delete
- Yes.
Multiax
Yes. Yes.
Phonebook
250 entries. 250 entries.
P25
Optional. Optional.

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Table 1-3 Analogue Trunked Variants
Feature 9170 / 9170is 9180 / 9180is
Channels
1024 channels in 50 sub-bands.
Frequency Bands
136 to 174 MHz, 400 to 480 MHz.
Background Hunt and
Vote-Now
Yes. Yes.
MPT1343 dial strings
Yes. Yes.
ANN Numbering
Yes. Yes.
Phonebook Memories
250. 250.
User Phonebook
Recall entries configured by FPP only. Recall and edit.
Alpha Status List
Yes. Yes.
SDM / EDMs
Yes. Yes.
NPDs
Yes. Yes.
Attack Operation
Yes. Yes.