cds 05 - ss 00 00 00 02 app d - halcrow options for … · 6.2 standard siemens radio ... 12.5 khz...

DisciplineEngineering Standard –NSW

CategoryCommunications

Title

Halcrow Options for Incorporating GPSMetronet Train Radio Facilities into ExistingTrain Radio Installations

Reference Number

CDS 05 –(RIC Standard: SS 00 00 00 02 APP D)

Document Control

Status Date Prepared Reviewed Endorsed Approved

Standards andSystems

StandardsEngineer

GMInfrastructure

Strategy &Performance

SafetyCommitteeIssue 1

Revision 1 Mar 05Refer to

ReferenceNumber

H Olsen M OwensRefer to minutes

of meeting12/08/04

Engineering Standard–NSWCommunications CDS 05Halcrow Options for Incorporating GPS Metronet Train Radio Facilities intoExisting Train Radio Installations

Issue 1 © Australian Rail Track CorporationRevision 1 This document is uncontrolled when printedMarch 2005 of 50

Disclaimer

Australian Rail Track Corporation has used its best endeavors to ensure that the content,layout and text of this document is accurate, complete and suitable for its stated purpose.It makes no warranties, express or implied, that compliance with the contents of thisdocument shall be sufficient to ensure safe systems of work or operation. Australian RailTrack Corporation will not be liable to pay compensation in respect of the content orsubsequent use of this document for any other purpose than its stated purpose or for anypurpose other than that for which it was prepared except where it can be shown to haveacted in bad faith or there has been willful default.

Document Approval

The technical content of this document has been approved by the relevant ARTCengineering authority and has also been endorsed by the ARTC Safety Committee.

Document Supply and Control

The Primary Version of this document is the electronic version that is available andaccessible on the Australian Rail Track Corporation Internet and Intranet website.

It is the document user’s sole responsibility to ensure that copies are checked for currency against the Primary Version prior to its use.

Copyright

The information in this document is Copyright protected. Apart from the reproductionwithout alteration of this document for personal use, non-profit purposes or for any fairdealing as permitted under the Copyright Act 1968, no part of this document may bereproduced, altered, stored or transmitted by any person without the prior written consentof ARTC.



Document History

Primary Source –ARTC Standard SS 00 00 00 02 Appendix D Version 1.0

List of Amendments –

ISSUE DATE CLAUSE DESCRIPTION1.1 09/03/2005 Disclaimer Minor editorial change

Header & footer reformatted



Contents

1 BACKGROUND ............................................................................................................... 5

1.1 Overview .............................................................................................................................................................. 5

1.2 Purpose and Limitations ..................................................................................................................................... 5

2 METRONET SYSTEM INFORMATION ............................................................................ 7

2.1 Parameters ........................................................................................................................................................... 7

2.2 Standard products ............................................................................................................................................... 7

2.3 Functional Outline ............................................................................................................................................... 7

3 STANDARD METRONET ON TRAIN INSTALLATIONS ................................................. 9

3.1 Equipment ............................................................................................................................................................ 9

4 GPS METRONET ........................................................................................................... 10

4.1 Difficulties–Standard installation on other rolling stock ............................................................................. 10

4.2 What is GPS MetroNet ..................................................................................................................................... 10

4.3 How does it work - Overview? .......................................................................................................................... 11

5 THE GPS PROCESSOR SYSTEM ................................................................................. 12

5.1 Function .............................................................................................................................................................. 12

5.2 Minimum equipment specification - processor ............................................................................................... 12

5.3 Minimum equipment specification–GPS receiver ........................................................................................ 12

5.4 ARTC–Siemens GPS Software ....................................................................................................................... 13

5.5 MetroNet Transponder Database .................................................................................................................... 14

5.6 GPS Processor Unit Software ........................................................................................................................... 15

6 GPS METRONET INSTALLATIONS ............................................................................. 18



6.1 Standard MetroNet GPS–(Standard GPS Processing) ................................................................................ 18

6.2 Standard Siemens Radio–External GPS Processing ................................................................................... 18

6.3 Siemens Radio Option (small format)–Standard or External GPS Processing ......................................... 19

7 USER CONTROL INTERFACE OPTIONS .....................................................................21

7.1 Siemens Control Console ................................................................................................................................. 21

7.2 CountryNet MetroNet Combined Control Console ....................................................................................... 22

7.3 Control Input from Touch Screen Device ...................................................................................................... 22

8 AUDIO INTERFACE OPTIONS ......................................................................................27

8.1 Handset Standard Installation ......................................................................................................................... 27

8.2 Handset Sharing–Existing CountryNet handsets ........................................................................................ 27

8.3 Existing Handsets ............................................................................................................................................. 28

8.4 600 Ohm Handset Interface ............................................................................................................................. 28

9 OTHER CONSIDERATIONS ..........................................................................................29

9.1 ROA Antennas .................................................................................................................................................. 29

9.2 GPS Antennas ................................................................................................................................................... 29

9.3 Power Supplies .................................................................................................................................................. 30

9.4 Environmental .................................................................................................................................................. 30

10 OPTIONS SUMMARY ...................................................................................................31

11 FIGURE 5 METRONET STANDARD ARRANGEMENT ..............................................32

12 FIGURE 6 GPS METRONET STANDARD ARRANGEMENT .....................................33

13 FIGURE 7 GPS METRONET COMBINED HANDSET AND CONSOLE .....................34

14 FIGURE 8 GPS METRONET PROCESSOR OPTIONS AND TOUCH SCREENCONSOLE .........................................................................................................................35



Figures

FIGURE 1 SIEMENS CONTROL CONSOLE ................................................................................................................ 21FIGURE 2 COMBINED CONTROL CONSOLE ............................................................................................................ 22FIGURE 3 TANGARA NORMAL INPUT SCREEN ...................................................................................................... 24FIGURE 4 TANGARA DATA INPUT SCREEN ............................................................................................................ 24FIGURE 5 METRONET STANDARD ARRANGEMENT ............................................................................................. 32FIGURE 6 GPS METRONET STANDARD ARRANGEMENT .................................................................................... 33FIGURE 7 GPS METRONET COMBINED HANDSET AND CONSOLE .................................................................... 34FIGURE 8 GPS METRONET PROCESSOR OPTIONS AND TOUCH SCREEN CONSOLE ..................................... 35



Background

Overview

The MetroNet Train Radio System provides radio communication facilities between Signallers, TrainControllers and Train Drivers in the Sydney Metropolitan Area.

The system offers speech and Short Message Text facilities as well as Status facilities for thesignaller’s line section. A Signaller can use the system to make Individual (One-on-One) as well asGroup (Conference) Calls. The status facilities advise Drivers when an Emergency is in Progress,whether they should make an Emergency Stop, and can be extended to include advice of speedrestrictions.

Trains use their Timetable Run Number to identify themselves, the run number appearing to be theselective call identity of the radio. A Driver registration facility links the Run Number to theindividual Stock Number of the on train radio.

As trains move through the area they are directed to differing signaller areas by the use of trackmounted transponders which advise passing trains of the radio systems controls signals which nowapply to the track section the train is in. The transponder system uses an active interrogator coupled toan antenna mounted on the bogie under the train. The frequencies to be used for communications areadvised to the train equipment as each call is established. This advice is carried on a system widecontrol channel which is time slotted and polled around the radio base station network.

Currently the whole Sydney electric rolling stock fleet is equipped with the train radio systemincluding the interrogator equipment.

This document outlines the methods that can be used to extend the MetroNet system onto the non-electric (primarily Freight) rolling stock also operating in the Sydney Metropolitan area. In this waydrivers of these trains will benefit from reliable communication to the controlling signaller and

signallers will have the confidence of knowing all trains are contactable.

Purpose and Limitations

This document is intended to allow Operators to determine which solutions they may adopt to facilitateprovision of MetroNet communications on their trains. It explains the operation of the MetroNet GPSsystem and its elements and explains where existing equipment may be used to take the place of someelements of astandard MetroNet installation.

In all cases it will be necessary for a Siemens mobile radio unit to be utilised as this contains theproprietary system software necessary for MetroNet operation.

The GPS Processor software forms the bridge to the Siemens mobile software allowing access to themobile radio control functions via the transponder passed messages. The specific nature and contentof the messages used for this purpose still remain proprietary to Siemens, who have only grantedARTC rights to use the information in conjunction with the GPS software package jointly developed

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1.1

1.2



by ARTC and Siemens.



MetroNet System Information

Parameters

The radio network complies with the following parameters;

ROA frequencies in the 408–420 MHz band

12.5 kHz radio channel spacing

Frequency Modulation

CTCSS operation for Traffic Channels

FFSK data signalling

Full Duplex

Siemens proprietary On Air Interface, derived from MPT 1327principles

Standard products

The MetroNet Train Radio Product Catalogue (Appendix A) gives furtherinformation on standard facilities and products available to facilitate the installation ofMetroNet.

Functional Outline

MetroNet provides communications between Signallers Train Controllers andTrain Drivers. The communications set up are One-One-One permitting thepassage of Safe Working information. Additional functionality allows CroupConference Calls, receipt and transmission of Short Text Messages and advice ofLine Status as well as Emergency Calls.

2.1

2.2

2.3

2



The system uses a polled control channel which advises mobiles of the appropriateradio channel to use for communication requests to the Network. All calls areestablished by the Signaller or Train Controller responding to Call Requests, shownin a call queue.

Each Signaller and Train Controller access their own radio infrastructure forSpeech Calls but may share equipment with all other users when setting up andreceiving call requests.

More detail is available in the MetroNet Train Radio Product Catalogue(Appendix A)



Standard MetroNet on Train Installations

Equipm ent

Standard MetroNet installations (on electric rolling stock) comprise the followingequipment;

Robust operators handset and loudspeaker

Operators Control Unit - either a proprietary Siemens unit or facilitiesincluded on the Tangara Trains drivers Display (touch Screen) system. Thisunit includes a display section of 2 lines of 24 characters for message andcalling party identification, as well as buttons for calling signallers andaccess to the other calls via call menus. Other buttons access volume andother radio/system functions. A single button exists for Emergency Callswhich in Tangara installations uses an external switch so that EmergencyCalls are not affected by any failure of the Touch Screen system

Mobile Radio Tray (19 inch rack 3U size)–this unit contains the Siemensmobile radio unit and interfacing components for microphone andloudspeaker connections

110 volt to 12 volt DC-DC power converter (19 inch 3 U size)

Transponder Interrogator Reader Unit (19 inch 2U size)

Roof mounted 408-420 MHZ low profile antenna

Under train Transponder Interrogator antenna

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See also

Engineering Standard–NSWCommunicationsHalcrow Options for Incorporating GPS Metronet Train Radio Facilities intoExisting Train Radio Installations

Issue 1 © Australian Rail Track CorporationRevision 1 This document is uncontrolled when printedMarch 2005

GPS MetroNet

D ificulties –Standard instalation on other rolling stock

The standard MetroNet equipment is difficult to include on none electric rollingstock, e.g. Freight Locomotives, because of space constraints, particularly underthe train for the interrogator antenna unit. Other radio equipment, alreadyinstalled on some locomotive for other Rail Networks radio systems, makes thelocation of handsets and drivers control panels difficult. The cost of theinterrogator reader unit and under train antenna also considerably increases theinstallation costs.

Australian Rail Track Corporation (ARTC) has jointly developed with Siemensan alternative method of generating the location boundaries that the transpondersystem currently creates by using GPS location information. This is known asGPS MetroNet.

The development objective was to significantly reduce on train equipment andinstallation costs while providing a position system that would satisfy the locationrequirements of the MetroNet Network.

What is GPS MetroNet

GPS MetroNet uses a GPS receiver and micro processor unit supported by adatabase of track transponder locations. The processor generates track transpondermessages, for transmission to the main mobile radio unit, in the same format ascurrently generated by the transponder interrogator and under train antenna system.This approach enables the standard MetroNet mobile radio software to be used forboth GPS and transponder Interrogator operation.

In a GPS MetroNet installation the Transponder Interrogator unit is replaced by theGPS Processor unit which additionally houses a power supply capable of poweringthe GPS Processor and the mobile radio unit. Modern switched mode powersupplies, with high efficiency, are used. This approach has extended the input powerrange which can be served and reduced the physical space required for installation.

Using the current preferred power supply unit the following input voltage rangescan be catered for;

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4.1

4.2



· 110V nominal (66.0 - 137.5V)dc· 72V nominal (43.2 - 90.0V) dc

· 52V nominal (31.2 - 65.0V) dc

· 24V nominal (16.8 - 33.6V) dc

How does it work - Overview?

The GPS Processor unit receives GPS location information at one second intervalsfrom the GPS receiver module in the form of a position fix. Every position fix isscanned through the transponder location database to build a list of transponderswhich are within 50m from the current GPS location. If transponders are foundwithin 50 metres the GPS Processor unit will send a transponder passed message tothe MetroNet mobile radio when one of the following conditions satisfied:

Current Signallers Area Number matches transponder old area numberand the transponder old area (Area 2) does not match transponder newarea (Area 2) i.e. a Signaller or Train Controller Area boundary has beenpassed. The transponder New Area (Area 1) will become the Area towhich the mobile is set. The GPS software stores the transponder areanumbers as well as the mobile radio

Current GPS Processor Area 1 matches transponder Area 2 and the GPSProcessor unit Area 2 matches transponder Area 1 and the train is heading inthe opposite direction. This caters for reversal over a single track linesection.

In addition to the normal MetroNet transponders for Signaller and Train Controllerboundary locations the database also incorporates transponders having specialmeaning for the GPS Processor. These cater for Entry & Exit to MetroNet as well asspecial messages to indicate that the train has been stationary for a pre determinedperiod and should be removed from signallers train lists and /or have its transponderdatabase automatically updated over the air.

4.3



The GPS Processor System

Function

The GPS Processor takes the place of the Transponder interrogator and undertrain antenna system. It uses GPS position data and a database of track mountedtransponder locations to generate messages for the Siemens mobile radio thatappear to be the same as those which would have been obtained form atransponder reader unit.

Additionally the GPS Processor houses the DC-DC converter to power it and themobile radio unit.

Minim um equipm ent specification - processor

300 MHz Pentium II computer

64Mb of RAMS,

32Mb on chip disk,

watchdog timer

Four serial communication ports. COM1 (RS232) is used for command/data transfer from GPS

receiver. COM2 (RS 422) used for command/data transfer to /from Siemens

mobile radio. This caters for the normal process of transponder passedmessages, indication that the mobile should enter/leave MetroNet andalso allows the Transponder Database (held in the GPS Processor) to beupdated over the air by the Mobile radio and MetroNet groundNetwork. These On Air Updates are contained in the existing MetroNet“Data Call” processes used for other on air system updates.

COM3 (RS232) for technician diagnostic and database download using alaptop computer

DOS Operating System. The QBasic programme runs under DRDOS in the standard GPS Processor configuration.

Minim um equipm ent specification –GPS receiver

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5.1

5.2

5.3



12 parallel channel 12 simultaneous tracking capability Acquisition Time (Time To First Fix TTFF

o < 60 seconds–no stored informationo <15 seconds with current almanac, position, time &

ephemeris

Output;o Latitude, Longitude, Heading, Velocity, Height, Timeo NMEA 4800 data formato 1 second update

ARTC –Siem ens GPS Software

ARTC and Siemens have developed the GPS software to run on the above processorand GPS receiver platform. The software hardware platform independent to facilitateits inclusion in other processors should these exist and have spare processingcapability. This software can be made available to operators for inclusion in existingequipment subject to agreed Licensing requirements.

Intellectual property rests jointly with ARTC and Siemens. Modifications to the codeto facilitate operation on platforms not meeting the above requirements will be byarrangement with ARTC and Siemens.

The critical requirement for consideration of the use of external processing is theability to service the GPS software and mobile radio in a timely manner such that the1 second processor task of transponder assessment and following update of themobile take place without delay. It is not anticipated that this will be a problem formodern processor systems however careful evaluation will be required for systemsoffering only the minimum processor specification AND running other co-incidentprogrammes in a multitask environment.

GPS Processor software is executed in DOS and written in QB7 (Quick Basic 7).

The GPS Processor program performs the following tasks:

Upon power up initialise the on board hardware (COM port, etc.), test andconfigure GPS receiver and load transponder location information from file.

After the system is initialized, the task organiser takes control of the system. Theorganiser controls the execution of the processes.

5.4



The watchdog service routine services the watchdog hardware at regular intervals.

A self-test routine checks GPS receiver at regular intervals and reports any faults tothe mobile radio for display to the Driver. The Driver being warned that manualMetroNet Area Number changing will be required if the GPS receiver has eitherfailed or does not have sight of enough satellites to determine a position fix.

The GPS Processor software can be executed in 3 modes:

Stand-alone mode: Position fix is derived from GPS receiver (COM1). This isthe default - start from cold mode.

Development mode: Position fix is derived from GPS receiver. GPS Processorunit status and GPS status are updated onto a VGA monitor if one is connected to theprocessor VGA port GPS position fix is also passed on to technicians terminal.

Replay mode: GPS position fix is read sequentially from a specified file instead offrom GPS receiver. GPS Processor unit status and GPS status are updated on displaymonitor. This facility is used for bench testing of the unit and its communication tothe mobile radio.

MetroNet Transponder Database

The GPS processor is loaded with a database of MetroNet transponder locationsand their transponder data (Area Number) as well as MetroNet boundary locations.The database is in a simple text format. Updating of the database, to take account ofchanged or new transponder data is made via on-air transactions when in theMetroNet service area. This update is handled by the Siemens mobile radio andtransferred to the GPS processor via the RS 422 data link.

The master transponder database is held within the MetroNet ground Networkand managed from the ARTC Network Maintenance Terminal. For new GPSProcessor installations a copy of the current database will be available on disk.Once the initial database is installed in the GPS Processor updates are carried outautomatically by the MetroNet system when the GPS Processor is within theMetroNet boundaries (and the on train installation is powered).

The need for database update is controlled by Version number checking carriedout as normal MetroNet processes (this also manages the mobile radio’s Call Permissions, Static and Dynamic databases necessary for correct operation of the

5. 5



Siemens mobile). The system only transfers changed or new records to minimiseon air download time.

It should be noted that mobiles not correctly registered with ARTC, and not enteredinto the main MetroNet System database, will not receive full database updates andwill be prohibited from Registering Run / Trip Numbers with MetroNet. Basic Calland Emergency functions will be allowed in these circumstances.

For correct registration with the system the Mobile Radio’s Serial Number and Stock Number must match those advised to ARTC. When Radio’s are changed, as a result fault repairs, the new mobile serial number must be advised to ARTC to enablethe system to be updated.

The data base also contains locations where ARTC Shunting yards are provided withradio facilities which can also be accessed by the Siemens radio operating in its nonMetroNet mode. Other non MetroNet locations can be entered in the database tocater for the use of the radio at other locations.

GPS Processor Unit Software

(Extract from “GPS MetroNet Train Radio (GMTR) System Manual”

The GPS data analyser routine receives the ‘short position message’ from the GPSreceiver at one-second interval. The angular co-ordinates and heading are extractedfrom the message, then analysed to determine the following:

Direction of Travel towards (Up) or Away (down) from Sydney, this is based onanalysis of Old and New Area numbers in transponder data

Is the location within the MetroNet Operational Boundary? If the location is out ofthe MetroNet area, a transponder passed message is sent to the mobile. The messagecontains a new area number of 200. Upon the reception of this message, mobile isdeactivated and sends a key-off message to ground on the old MetroNet AreaNumber. Entering the MetroNet area will re-activate the mobile and a key-onmessage is send. This process will also terminate / commence the “Please Register” request to the Driver.

Movement to Non-Train Radio (8xx Areas) will also cause the mobile to be issuedwith a Key On command to facilitate display of the Area Number and operation ofthe mobile in Non Train Radio mode.

5.6


Issue 1 © Australian Rail Track CorporationRevision 1 This document is uncontrolled when printedMarch 2005 Page 16 of 50

In all cases movement back to Area 200 causes a Key Off message to be sent tothe mobile.

If the location falls into the area of the circle of 50m radius centred at a transponderlocation then a transponder passed message, in existing format, is sent to the mobile.The mobile will act on the message in the normal way. Sending of transponderpassed message depends on the status (registered / unregistered) of the mobile. Thenext transponder locations will then be determined from the database, based on thecurrent transponder position and heading. There may be more than one transponderahead depending upon which track direction is taken. In the case of a single-trackcircuit, train has to move out of the area of circle of interest or the heading changedbefore re-entering to trigger another transponder passed message.

The GPS Processor unit software also caters for non-MetroNet operation using the8xx facility initiated by appropriate transponders. These areas may exist within theMetroNet general area or outside of the MetroNet area.

In some locations, especially in the inner Sydney area, GPS information may not beaccurate (due to number of visible satellites and satellites tracked), the mobile isinformed by the GPS Processor that the driver may be required to intervene tomaintain correct area.

A technician port is provided to enable monitoring of the GPS module functionsfor diagnostic purposes, and to enable operating system update and transponderdatabase update from a laptop, or similar, computer.

In the case of a missing transponder that may result from a high error in GPS data orfrom incorrect initial area setting, the GPS Processor unit will build a list of nextavailable transponder based on the current list. A transponder passed message is sendbased on current transponder list, next available transponder list and current headingas well as the heading from the current transponder to the next transponder.

Once the processor has determined that a transponder has been passed it formulatesa message, using the MetroNet Area information stored in its database, to updatethe Siemens mobile radio with the current MetroNet Area information.

At MetroNet Boundaries a similar action takes place but the processor insertsadditional commands to instruct the radio to carry out a standard MetroNet‘Driver Key In/Out” process. This switches On/Off the Drivers display and triggers the Driver Registration process on the mobile radio.



GPS MetroNet Installations

Standard MetroNet GPS –(Standard GPS Processing)

A MetroNet GPS installation, where no other existing radio communications, driverinterface or processing equipment exists, requires the following units. More optionsexist for inclusion and use of existing equipment where this is compatible. Theseoptions are dealt with in later sections

Operators handset

Loudspeaker

Siemens Operators Control Unit


GPS Processor unit which includes a DC-DC power converter (19 inch 3U size)

Roof mounted 408-420 MHZ low profile antenna

Roof mounted GPS antenna Standard Siemens

Radio –External GPS Processing

Where an operator wishes to uses existing GPS receiver and processing capability toprovide the MetroNet GPS Processor capability the following equipment will berequired;

Operators handset

Loudspeaker

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6.2



Siemens Operators Control Unit


Processor unit/capability meeting the requirements of Sections 5.2 and5.4 above, connected to a GPS receiver, running the Siemens ARTCMetroNet GPS software

GPS receiver meeting the requirements of Section 5.3 above

DC-DC power converter to provide 13.8 volts DC at 10 amps to powerthe Siemens mobile radio unit

Roof mounted 408-420 MHZ low profile antenna for the Siemens radiounit

Siemens Radio Option (smal format) –Standard or External GPSProcessing

The standard Siemens radio tray requires 3U of 19 rack space. This can bereduced if the radio module can be installed in an existing enclosure or housingwhich will afford the protection of the existing tray. This option has not yet beendeveloped by ARTC / Siemens but no technical problems are foreseen.

As each installation is potentially special it is not possible to offer definitivespecification information. The following serves as a general guide when assessingthe possibility of adoption of this requirement.

The Siemens radio unit has connections for the following;

DC power input–flying lead with in line fuse Loudspeaker output–flying lead with plug coupler RF antenna–BNC female socket Audio input and outputs, line and low level–25way D connector Data input and outputs catering for Control Console, GPS Processor

connection for Transponder Passed, technician terminal and TouchScreen alternative Control Console capability–25 way D connector

6.3



These connections will require termination to their appropriate connectedequipments. The low level microphone input additionally requires externalphantom power connections to power the electric microphone in the standardhandset.

The radio unit is mounted on an ant vibration plate with rubber shock absorbers.This has been tested to AS 1099.2.6 for vibration resistance when the unit ismounted horizontally. Additional determination will need to be carried out shouldvertical mounting be required.



User Control Interface Options

MetroNet functionality requires the Driver to interface to the radio via anOperators Control. This unit requires a display section of 2 lines of 24 characters,for message and calling party identification, as well as buttons for calling signallersand access to the other calls via call menus. Other buttons access volume and otherradio/system functions. A single button exists for Emergency Calls.

Two options exist for provision of this facility either use of the proprietary SiemensControl console or interface form a touch screen or similar driver input / displayunit.

Siem ens Control Console

The Siemens control console, as used in non Tangara electric rolling stock,comprises a 2 line, 22 character vacuum fluorescent display with 28 back litfunction buttons. The unit communicates to the mobile radio, from which it alsodraws its power, using RS 422 communications. The protocols of communicationare proprietary to Siemens and, as yet, not available in the public domain.

Figure 1 Siemens Control Console

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The unit mounts by back mounting screws and is connected to the mobile radio by asingle cable of 4 pair’s minimum construction.

The mobile radio can support the connection of two consoles to facilitateoperation in a double ended locomotive. Both consoles operate simultaneouslywith the mobile controlling input by a simple time contention process.

CountryNet MetroNet Combined Control Console

To facilitate simpler installation in locomotive currently fitted with standardCountryNet Control panels, a combined control head has been developed offeringCountryNet and MetroNet control buttons and display in a single panel. This unit isdesigned to replace the front section of existing CountryNet control consoles.

Figure 2 Combined Control Console

This unit does not amalgamate any operations between CountryNet and MetroNetbut just provides co-location of the drivers operations controls.

Control Input from Touch Screen Device

GeneralThe mobile radio unit can also support interface using a touch screen or similardriver interface system.

The display interface was designed to work with the Tecknis touch screen installed inthe Tangara trains. While machine specific the details of the interface and intellectual

7.2

7.3

7.3.1



property of the interface protocols is owned by ARTC and can thus be



utilised by operators wishing to interface into their own existing touch screensystems.

Some interface configuration will be required to connect satisfactorily between nonTecknis screens and the MetroNet mobile and the following information will assist indetermining the complexity of this configuration.

The interface provides a current loop interface between the radio unit andconnected touch screen. Details are included in SRA Specification 1118 Issue 5,the following summarise the important parameters that apply;

20 ma active TX from Radio 20 ma active RX at radio i.e. radio sources TX and RX current Communications speed 9600 baud Protocol ASCII Characters, 7 data,1 stop bits, Even Parity Link Test handshake

7.3.2 OperationAt power up the mobile tests its control interfaces to determine if a Siemenscontrol head is connected. If no Siemens head is detected then it tests the currentloop port for a touch screen.

When a touch screen is detected by response to the link test message the mobileradio downloads to the touch screen a layout to be drawn on the screen foroperator input. The layout defines appropriate buttons or touch targets,representing the MetroNet key function, by x,y screen coordinates, button type /size and caption.

One section of the layout represents the display area found on the standardMetroNet console and messages are written to this area in the same way as thestandard display.

To cater for the lower resolution of the touch screens in terms of touch targetnumbers the radio advises the touch screen system of two button display screens.One being the normal “Screen” the second being a special panel for Registration Input where normal target annotations are changed to numerical input targets.

The radio controls which screen the touch screen displays to the driver bydetermination of the Drivers input. The Data Input (Registration) Screen is onlydisplayed once the Driver has pressed the RG target on the normal screen.



Figure 3 Tangara Normal Input Screen

Figure 4 Tangara Data Input ScreenNote: The Status Area above the operational Area is used to display other Tangara Specific data tothe Driver when the Drivers Touch Screen Display unit is in Radio Mode. When the Driver switches toControl or TMS mode the contents of the Radio display window are shown in the Status Area withTMS function buttons taking the place of the Radio Control Buttons.

By additional processing in the operators interface the need for screen switchingcould be eliminated if the resolution and available screen area permitted display ofall 28 MetroNet input buttons simultaneously.

The need to accept the screen drawing commands from the mobile radio could beeliminated by having pre draw screen displays stored in the Operators Touch Screenunit. Only the necessary ASCII output string would then need to be



transmitted to the mobile for each Target. The ASCII message content (from Spec.1118) for this “Soft Key Pressed” message is;

ESC] (nESC\ where n = soft key button number pressed

The need for the Status window will be dictated by the manner the Operator choosesto integrate MetroNet with existing touch screen functionality. Operationally theminimum display that should be continuously shown to the Driver, when in theMetroNet Area, is the content of the Display Window. As this content may includeinstructions from Signaller, to make Emergency Stops, and other, real time networkInformation. It should be displayed in such a manner that it is clearly visible to the

Driver and in a manner that does not delay visual display by greater than onesecond.

Emergency Cal InitiationTo guarantee driver access to the MetroNet Emergency Call function when touchscreen input is in use a separate Emergency Call trigger is provided. In TangaraMetroNet installations this is a press button mounted on the driver’s console. Theradio requires the button to be activated for greater than 3 seconds to preventaccidental operation.

In any installation using the touch screen input this feature must also be provided.While the hardwired button is the most reliable solution it would be possible for aslaved voltage free contacts to be used should an existing emergency button ortouch screen target be available.

Constraints(a) Audio Input & Output

When the radio detects that it is operating via a touch screen input it automaticallydetermines that audio input and output, for the operators handset mic/earpiece,will be via the 600 line level port. No change is made to the loudspeakerconfiguration. Normal handset audio input is therefore not available in touchscreen mode and line levels must be utilised.

(b) Multiple Screens

The radio can only support one touch screen input so for dual cab installations theexternal equipment must cater for any dual ended or multiple screen operationincluding any required input contention control.

7.3.3

7.3.4



Audio Interface Options

Handset Standard InstallationMetroNet is a duplex radio system and requires use of a handset for correctoperation. Call establishment uses a loudspeaker to convey Alert and Key Pressconfidence tone to the driver. Once a call is connected the first press of the PTTbutton is detected by the radio and used to transfer audio to the handset earpiece,loudspeaker audio is reduced at this time to leave residual audio to assist inovercoming ambient noise but at a level which prevents howl round the duplex radiocircuit. There is no PTT function at the signaller’s end which would prevent howl round.

The PTT function operates as a microphone mute, should this be necessary toreduce background ambient noise pick up, and does not control the transmitter inMetroNet operation other than when in conference call modes when the radio isconfigured, by the system, to be two frequency simplex.

PTT operation is also used when the radio is in non MetroNet mode when used inshunting yards and other locations where non MetroNet operation is enabled.

In a MetroNet installation, where no other equipment is used or installed, a standalone standard MetroNet handset unit should be used.

Handset Sharing –Existing CountryNet handsetsWhere MetroNet is installed with other radio and / or communications equipment ahandset sharing option exists. This unit allows a Simoco CountryNet handset to feedMetroNet, standard CountryNet and one other (at CountryNet Line level) connectedunit (intercom, other radio etc.)

The unit draws power from CountryNet and MetroNet to ensure non dependenceon either system.

The unit also provides a ‘Call in Progress” output condition to facilitate muting of external equipment e.g. entertainment systems, should this be required.

The unit is contained is a small die cast box and connects using same style of lockingDIN connectors used for CountryNet. Connection is made at the handset the unitbeing connected in series with the existing handset, additional cabling is then takento the Siemens radio unit and other equipment as required.

8

8.1

8.2



Existing HandsetsWhere existing handsets, other than CountryNet type, are provided they may beinterfaced to the MetroNet radio provided that they offer the following facilities;

Earpiece compatibility for “4T” type insert Microphone compatibility to provide 14 millivolts audio to the mobile

radio at normal voice level Voltage free PTT contacts either directly or slaved via relay

Hook / Cradle switch connections are not required by MetroNet.

Where existing CountryNet handsets are available then the Handset Sharingdevice may be used to provide handset functionality for MetroNet or aseparate handset provided.

600 Ohm Handset InterfaceThe MetroNet mobile only supports, when used with a non Siemens controlinterface via the Tangara port, handset audio at 0dBm 600 Ohm line level.

When this method of connection is provided a Voltage free PTT contact, eitherdirectly or slaved via relay, is required to be fed to the radio from the externalhandset.

Received audio is always available at the 600 line interface port for all handsetconnection conditions. Only the microphone input is switched between normaland 600 Ohm input.

8.3

8.4



Other Considerations

ROA AntennasMetroNet mobiles normally operate in duplex mode when in the MetroNet area. Itimportant that the antenna is located to minimise interference form othertransmitting antenna on the train where these wil be transmitting inside of the MetroNetboundary.

There is no concern, say with CountryNet as this will not, under normal conditionstransmit within the MetroNet area and will not therefore cause interference orreceiver de sensing to the MetroNet mobile.

Consideration has to be given to other system receivers, and their antennas, wherethese need to function in the MetroNet area. ARTC and Siemens have conductedtests to determine interference effects to the GPS antenna and field trials show thata minimum separation of 1 metre is required to prevent ROA frequencies affectingGPS receiver performance.

MetroNet Mobiles do not transmit unsolicited outside of the MetroNet area otherthan when working in non MetroNet or Shunting mode. There is therefore minimuminterference capability to other system when outside of MetroNet except when theradio is used for non MetroNet operation.

It would be possible for MetroNet to share existing antennas via appropriateantenna sharing devices provided that these offer the following capability;

RX frequency insertion loss less than 1 dB TX power handling of 10 Watts TX isolation to other units >70 Db 50 Ohms matching

The MetroNet mobile does not have capability for the connection of separate TXand RX antennas for use, any system for shared antenna use must provide singlecable connection.

GPS AntennasAs indicated above trials have shown that GPS antennas must be separated by atleast 1 metre from sources of RF in the ROA band if there performance is to bemaintained.

9

9.1

9.2



The MetroNet GPS processor requires valid GPS data while in and outside of theMetroNet area, it is important that its associated antenna is therefore distancedfrom other sources of RF radiation.

Power SuppliesThe MetroNet mobile requires 13.6 volts negative earth at 10 amps to operatecorrectly. Ripple should be less than 300 millivolts and voltage regulation betterthan +/ - 1.5 volts.

Power supplies should offer galvanic isolation form the input voltage lines.

Environm entalMetroNet equipment has been designed to meet SRA specification 1122 and hasbeen tested to meet AS 1099.2.6. Installations of other than the standardequipment will require validation of performance in other than these conditions.

9.3

9.4



10 Options Summary

The following are the main options available for the provision of MetroNet.

Mobile Radio Standard UnitDe Cased unit

Control Console Siemens Console CombinedConsole (CountryNet) TouchScreen Interface

GPS Processor MetroNet GPS Processor Other PC Processor

Handset Standard Handset Shared(CountryNet Handset) 600Ohm Line Level

The following Table shows the functional limitations of each option

Siemens ControlHead

Dual ControlHead

Touch ScreenControl interface

Standard orshared Handset

Audio

600 OhmHandset

Audio

Mobile OK OK OK OK OK

SiemensControl head

OK No OK No

Touch

ScreenInterface

No No No OK



Figure 5 MetroNet Standard Arrangement

11 Figure 5 MetroNet Standard Arrangement

T R A N S P O N D E R I N T E R R E G A T O R U N I T

ROAANTENNA

SK B SK A

MICROPHONEEARPIECEPRESS TO TALK



Figure 5 MetroNet Standard Arrangement



Figure 6 GPS MetroNet Standard Arrangement

12 Figure 6 GPS MetroNet StandardArrangement

ROAANTENNA

GPSANTENNA

Figure 6 GPS MetroNet Standard Arrangement

HANDSET

MICROPHONEEARPIECEPRESS TO TALK

A

SIEMENS MOBILE RADIO

SK B SK A

TRANSPONDER DATAAND DATABASE UPDATERS422

GPS PROCESSOR UNIT

LOUDSPEAKER



Figure 7 GPS MetroNet Combined Handset and Console

13 Figure 7 GPS MetroNet CombinedHandset and Console

Figure 7 GPS MetroNet Combined Handset and Console

Notes;

Handset sharing device is designed to use the Simoco CountryNet handset

Combined Control Console replaces front unit on an existing CountryNet control Console Siemens mobile radio can support dual Console and handset inputs for these options



Figure 8 GPS MetroNet Processor Options and Touch Screen Console

14 Figure 8 GPS MetroNet ProcessorOptions and Touch Screen Console

Figure 8 GPS MetroNet Processor Options and Touch Screen Console

ROAANTENNA

GPSANTENNA

SIEMENS MOBILE RADIO

SK B SK A

TRANSPONDER DATAAND DATABASE UPDATERS422

EXTERNAL / OPERATORP R O V ID E D

P R O C E S S O R

GPS PROCESSOR UNIT



15 Appendix A MetroNet Train RadioCatalogue

METRONET TRAIN RADIO PRODUCT CATALOGUE

OVERVIEWThe MetroNet train radio network has been in service for approximately 4 years in the State of NSW.MetroNet provides secure voice and data communications between train drivers, signallers and controllers.The MetroNet system has over 180 base stations located along the electrified railway corridors providing100% coverage including all tunnels. There are 6 controller areas managed by dual redundant ManagementProcessor (MP) computers connected to a dual redundant Network Control Processor (NCP). Areas coveredare Sydney City Underground and suburban areas, north to Newcastle, west to Lithgow and Richmond, south toCampbelltown and on the south coast to Dapto and currently being extended to Kiama.Maintenance procedures are well established for the MetroNet network and as a result of good maintenancepractises, high system availability has been achieved since the system has been commissioned.Brief technical specifications are listed below.Details of MetroNet components and ordering information are described later in this leaflet, which focusesmainly on GPS MetroNet, a lower cost train radio suited for locomotives.

MetroNet General Technical Specif ications

Function Details

Communications system Analogue Terrestrial UHF radio

Coverage Area Sydney to Lithgow, to Kiama, to Campbelltown and to Newcastle

Signalling Areas Currently 50

Controller Areas 6 Controller Areas. Mechanical Control (Defects) and Operations Supervisor also haveaccess.

Base Stations 188

Transponding Base Stations 78 (used to remotely test base stations)



Mobiles 870 Cabs



Function Details

System Structure The electrified area is covered by a single system with distributed processing (6 nodalpoints on a protected ring) and central management. Signaller and controller positionsare connected to the nodal points and in turn connect to base stations.Each cab of the suburban fleet is equipped with a separate mobile and single controlhead/handset/loudspeaker.Trains are progressed between signal and control areas by reading passive

transponders located on sleepers. Current development will provide a GPS-basedalternative suitable for freight and country operations.

Driver Facilities andCapabilities

Control head with display and alphabetical and numerical entry capabilities.Driver registers each run using these inputs.Driver requests a signaller call by pressing a single button and a controllercall by selection of the call from a menu of call types. Mechanical Controland Operations Supervisor are called in the same manner.A driver’s call request is acknowledged to the driver by a text message on hiscontrol head and an associated audible tone.Drivers can issue an emergency call by pressing the“Emergency” button.This is a priority call that also causes all other trains in the signaller area to beadvised of “Emergency in Progress”.Drivers can send a number of pre -defined short text messages to groundcontrollers who can respond with similar text messages or by voice.

Signaller/Controller Facilitiesand Capabilities

A signaller or controller being called is alerted by an audible tone and by theappearance of caller details on the screen.A signaller or controller calls a train or responds to a call request by selectingthe train’s run number from the display using a keyboard. The driver will bealerted by an audible tone and text message. The driver can then pick up thehandset and talk.A signaller or controller can also initiate a broadcast call that will be heard byall trains in the signalling or control area via the loudspeaker. Drivers can nottalk into a broadcast call.A signaller or controller can initiate a group call involving two or more trainsin the signalling or control area. All parties can talk and be heard. Thisfeature can be used for driver-to-driver communications.Controllers can also send short text messages of up to 24 characters bykeyboard entry.Signallers can send a priority“STOP-STOP-STOP” message to all trains intheir area, including those that enter the area while this condition is in force.

General FeaturesAll the above voice calls are recorded, as are the associated data messagesand the short text messages.Over-the-air database download of system information is available.

Dual cab functionality Available for dual cab operation in locomotives. Two MetroNet control headsand one radio are required for dual cab operation.

Radio Mode Duplex except for handportables

Operating frequency bands 408/418 MHz (Railways of Australia frequencies)

Frequency Spacing 12.5 kHz

Channels in use 48



Function Details

Coverage Criteria Greater than 95% of track between stations and, 100% coverage in stations,tunnels and cuttings.

Data Transmission A “transparent” voice channel may be used with external modems to transmitdata at up to 1200 bit/s. Limited data can also be sent to the train via thecontrol channel. Note: the mobile radio can only handle one call at a time.

Supplier Siemens Ltd

System design & developmentcontrol

ARTC Systems



STANDARD METRONET TRAIN RADIO EQUIPMENTThe standard MetroNet mobile radio configuration is currently in service on the NSW CityRail electricpassenger fleet. It uses a transponder interrogator unit mounted under the train to accurately detect track-mounted transponders that automatically set the correct signaller and controller areas. It is suitable for trainsthat operate in the electrified metropolitan area including the City Underground.The standard MetroNet system uses the transponder interrogator to read transponder positions for SignallingArea Code selection as the train moves through different signalling areas. If a transponder is missing or faulty,the driver can manually enter the area code to select the correct radio channel for the current signal area .New mobile radios have to be configured into the system database before they can be used in the network.Stolen radios can be barred from use through the system database. Call type permissions can be remotelyconfigured into radios limiting (where required) the call functionality. For example, not all radios need to callthe CityRail Mechanical Controllers.Typically, installation of standard train radio equipment in a single cab situation typically requires a team of 4-persons for 4 days.

Standard MetroNet Control Head

GPS MetroNet Train Radio EquipmentThis option provides a lower cost solution that has been developed for freight and inter-urban trains that enterthe metropolitan electrified areas. The GPS Processor unit is based on the international GPS (GlobalPositioning System) technology and determines a train's location in relation to the positions of the tracktransponder positions used by standard MetroNet. When a train passes a signalling area or control areatransponder position, the GPS processor switches the Train Radio to the relevant signaller or train controllerarea.The GPS MetroNet is not suited to frequent passage through underground tunnels, where there is no GPScoverage and train location does not get updated.



Installation and maintenance is simpler and easier than a standard MetroNet installation, as the massive under-train antenna is not required. Typically, installation of the GPS MetroNet train radio equipment on a single cablocomotive can be completed in less than 2 days using a team of four persons.GPS MetroNet is essentially the same as standard MetroNet mobile train radio equipment from the point ofview of drivers, signallers and controllers. There are some subtle differences–for example, the GPS system isnot accurate enough to select between adjacent tracks. Logic in the GPS Processor uses other information toobtain this information. Manual setting of the signalling area is always available.Over-the-air database download is provided when in the electrified area, so that the latest transponderpositions are available to locomotives.GPS MetroNet will shut itself down and display only time when outside the electrified area. It will also do thisif stationary for a period of time (e.g. 1/2 hour).It should be noted that the ID of new radios and their permitted functionality must be registered in the RadioSystem Operation Manager (RSOM) database for them to be recognised by the system. This work is currentlyperformed by SRA for CityRail trains.Examples of GPS MetroNet configurations are illustrated in the “Ordering Information” section. Further discussion is required in the case of NRC locomotives, as it is expected to be possible to integrate GPSMetroNet with the existing AWARE system.

Dual Cab Operation

The GPS MetroNet radio can be configured using one mobile radio unit to serve both cabs of a dual cablocomotive. This requires two MetroNet or combined control heads. The mode of operation is described asfollows:1. In the absence of a cab-occupied indication to the radio equipment, either of the MetroNet control heads

(A or B) can take control of the radio, and will remain in control for about one minute after being activatedby pressing any button on the control head. If control head A is in control, any entry on control head Bwill be rejected. After the 1 minute time period is elapsed, control head B can take control in the samemanner.

2. Both control heads will display the same messages whether generated by one of the control heads orreceived from the system.

3. The control heads are arranged in a redundant fashion. That is if control head A fails, control head B canbe used and vice versa.

GPS PROCESSOR (GPSP)Overview

The MetroNet GPS Processor (GPSP) is the position locating element of GPS MetroNet and replaces thetransponder interrogation system of standard MetroNet. It also includes a dc power supply for itself and theradio equipment to save space.The unit reads the position of the train every second using the Global Positioning System (GPS) system of lowearth orbit satellites. The GPS system can give stationary positional accuracy better than 10 metres, andmoving accuracy of 50 metres for over 95% of the time, meeting the basic requirements for MetroNetoperation. Suitability for use with MetroNet has been verified by Australian Rail Track Corporation by takingrecordings from train trips and relating them to survey-derived information contained in the ARTC Graphical



Information System (GIS).



The GPSP is manufactured using standard “off the shelf” component parts to ensure long term availability. Itincorporates a 12 channel GPS receiver that is interfaced to a single board computer (SBC). The SBC runs aQuick Basic programme that determines the proximity of the train to known track transponder positions storedin a database.When the GPSP determines that a MetroNet track transponder position has been passed, it sets the radio to thefrequency corresponding to the new signalling or control area and transmits a Transponder Passed Message tothe ground equipment. The train then is transferred from the train list of the previous to the new signaller orcontroller. If a call is in progress, it will be continued as long as radio coverage is available.

MetroNet Mobile Radio Tray and Prototype GPS Processor Unit Installed in An Endeavour Cab

GPS MetroNet Capability For Shunting Radio

The GPSP can also set the mobile to operate on standard ROA frequency channels for two-frequency operationin shunting yards and similar installations. This enables the GPS MetroNet mobile to support othercommunication systems when not within the MetroNet area. The ARTC strategy for communications in NSWShunting Yards is to provide compatible communications systems that can use this facility.

GPSP Versions

3U*19” Mobile Radio Tray

2U*19” GPS Processor



To facilitate installation and to meet user requirements, the GPSP is available in various versions. These rangefrom a skeleton frame supplied in kit form for incorporation in either existing or other supplier’s equipment, through to a rack mounted unit which can also incorporate a power supply to power the GPSP and theMetronet mobile from the train supply.

Additional Facilities

All GPSP units have a data output connection which provides a GPS data stream from the GPS receiver instandard NEMA 283 format. This permits the connection of other equipment requiring GPS position or timeinformation. GPS position output is available at all times, not just when the radio is in the MetroNet area.

Engineering Facilities

A number of maintenance features are included in all GPSP units to facilitate testing and indication of correctoperation. These facilities are not visible to the driver.The front panel incorporates a number of LED’s to indicate the following functions:

GPS Data Link Operational Satellites available for position tracking DC Power Input present Internal power present Data Link to mobile radio present

A D-type 9 pin female connector allows the connection of a laptop PC that allows additional technical tests tobe performed. One of these allows the running of a GPS simulation, which changes the mobile through allavailable Area Numbers allowing rapid confirmation of operation.Software updates and transponder database download can be performed via a laptop using the technician’s serial port. This would only be necessary if the unit had been operating away from the Metronet territory for aconsiderable time and required a complete transponder database download, or needed a new version of theoperating software. Database differences up to 2Kbytes will be downloaded over-the-air automatically.

Combined MetroNet & CountryNet Control Panel

This unit replaces the standard CountryNet control panel and incorporates the CountryNet controls (in anagreed new layout) with the Siemens standard Metronet Control head. This allows MetroNet to be installed inan existing set up without requiring additional space provision within the Drivers view and reach. Twoversions of combined control heads have been developed. A standard die -cast box version directly replacesthe fully enclosed unit; and the other, a flat-plate version for incorporation into control desks and consoles is asshown in a Endeavour train installation.



Standard Combined Control Head (diecast box) Endeavour Combined Control Head (flat-plate)

Common Handset Interf ace UnitTo eliminate the need for multiple radio handsets, the Common Handset Interface Unit allows a single handsetto be used for MetroNet, CountryNet and another interface (e.g. Intercom). Where CountryNet is alreadyinstalled the handset-sharing unit uses the existing CountryNet handset and replaces the handset connectionbox. It supports the headset function where required.The unit is equipped with a muting facility providing the following functions:

Mutes CountryNet and Intercom input to the handset earpiece when a MetroNet Call is in progress. Provides a control line output to Mute an external Driver Entertainment system when either a MetroNet,

CountryNet or Intercom call is taking place.



MetroNet Handportable RadioThe MetroNet Handportable Radio was designed for use by guards and shunters, and is based on a standardcommercial handportable radio. It has now been enhanced to make it also suitable for communications withmetropolitan signallers and controllers users who only infrequently enter the electrified area. It provides aninterim solution allowing a rapid provision of communication facilities on the MetroNet network. Thefunctions available in the Handportable are a subset of those available in the standard MetroNet mobile radio.The Handportable can access the WB (450.05 MHz) radio channel used for Roam mode on CountryNet,permitting its use instead of a regular WB handportable.Issues such as battery maintenance, different operation from that of standard MetroNet and general limitationsof handportable radios suggest that a fixed installation is more suitable where regular use of MetroNet isanticipated.The MetroNet handportable is based on a Motorola MTS2000 radio loaded with Siemens software. StandardMotorola accessories, such as vehicle mounting kits and remote microphones, can be used.A train-the-trainer instruction package on the operation of the handportable radio by locomotive drivers isavailable, including a video and other training materials.

MetroNet Handportable Radio

cds 05 - ss 00 00 00 02 app d - halcrow options for … · 6.2 standard siemens radio ... 12.5 khz...

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