OP25 Project

OP25 is a not-for-profit project to bring together folks that are interested in implementing APCO P25 using a software-defined radio. Our goal is to build a software-defined analyzer for APCO P25 signals that is available under the GNU Public License (GPL).

APCO Project 25 is the digital communications standard used by many police and emergency services throughout the world. Most notably the US, Canada and Australia deploy systems based on P25. Compared to existing analogue systems P25 offers improved spectrum use, coverage and flexibility. Provision is made to ensure the confidentiality of traffic, to allow the use of trunking and the provision of data in addition to voice services.

Hardware scanners such as the Uniden BCD996T offer APCO P25 functionality but software-defined radio (SDR) offers significantly improved flexibility. For example, software radio approaches can receive many channels at once, handle both voice and data (including the trunking control channel), decrypt encrypted traffic when the key is known and log traffic to disk for later analysis. With the right software an SDR is a powerful analysis tool for debugging and monitoring of P25 networks.
That's the sales message. The reality is software-defined radio isn't yet as simple as the plug-and-play of hardware radios. You will need a lot of patience and a fair amount of software skills to get working. To get an idea of the work involved you can check out Hardware for Your Software Radio By Stephen Cass. In that sense this really is an amateur radio project and requires the same kind of skill and dedication but we've a few people who will help out if you run into trouble. A project like this needs many different skills so even if you're not technical you maybe able to help in other ways.

A short video that demonstrates OP25 transmitting audio from a PC's microphone input, then to a USRP being received by a GRE scanner is available on  http://www.youtube.com/watch?v=vk0S5JtQtMk

OP25 project can be found here: http://132.234.113.119/op25

V8 Supercars 2011 Frequencies (March 2011)

Here is an updated frequency list for 2011 of the V8 Supercar Series. This may vary from state to state but is the most up to date list at the moment.

Team Sponsor Name CAMS Competitor Name Driver Name Freq (MHz)
1 Toll Holden Racing Team Walkinshaw Performance James Courtney 450.1750
2 Toll Holden Racing Team Walkinshaw Performance Garth Tander 450.4500
3 Wilson Security Racing Bellmont Nominees Pty Ltd Tony D'Alberto 454.7000
4 Irwin Racing Stone Brothers Racing Pty Ltd Alex Davison 470.5000
5 Orrcon Steel FPR Falcon Prodrive Racing (Aust) Pty Ltd Mark Winterbottom 463.4625
6 Trading Post FPR Falcon Prodrive Racing (Aust) Pty Ltd Will Davison 464.4125
7 Jack Daniel's Racing Motorsport Holdings Pty Ltd Todd Kelly 453.4375
8 Team BOC Brad Jones Racing Jason Bright 453.0875
9 SP Tools Racing Stone Brothers Racing Pty Ltd Shane Van Gisbergen 471.2500
11 Pepsi Max Crew Perkins Engineering Pty Ltd Greg Murphy 456.7500
12 Triple F Racing Triple F Racing Dean Fiore 471.3500
14 Team BOC Brad Jones Racing Jason Bargwanna 456.9250
15 Jack Daniel's Racing Motorsport Holdings Pty Ltd Rick Kelly 458.3125
16 Stratco Racing Perkins Engineering Pty Ltd David Reynolds 454.9000
17 Jim Beam Racing DJ & CS Holdings P/L Steven Johnson 450.1000
18 Jim Beam Racing DJ & CS Holdings P/L James Moffat 450.2500
19 Mother Energy Racing Team Stephen John Webb Jonathon Webb 457.6750
21 Fair Dinkum Sheds Racing Britek Racing Karl Reindler 456.2125
30 Gulf Western Oil Racing Lucas Dumbrell Investments Warren Luff 461.2250
33 Fujitsu Racing GRM Garry Rogers Motorsport Lee Holdsworth 455.8000
34 Fujitsu Racing GRM Garry Rogers Motorsport Michael Caruso 456.1250
39 Supercheap Auto Racing Nemo Racing Pty Ltd Russell Ingall 455.0250
47 Lucky 7 Racing J R Racing Pty Ltd Tim Slade 457.1750
49 VIP Petfoods Nemo Racing Pty Ltd Steve Owen 458.1250
55 The Bottle-O Racing Team Rod Nash Racing Pty Ltd Paul Dumbrell 464.8625
61 Bundaberg Racing Walkinshaw Performance Fabian Coulthard 450.1500
88 TeamVodafone Triple Eight Race Engineering Pty Ltd Jamie Whincup 471.4500
888 TeamVodafone Triple Eight Race Engineering Pty Ltd Craig Lowndes 471.5750

MPT1327 Monitoring in Sydney

MPT1327 is a reasonably older system still being used throughout Sydney and some regional areas. The bigger ones being the Vertel VHF and Telstra Fleetcoms UHF networks.  However, most scanners available on the market are unable to track the MPT1327 trunking network on their own like they do with EDACS, LTR and Motorola Trunking systems, but thanks to some developers, there is now an application called 'Trunkview' which 'TrunkView is an MPT1327 protocol decoder, used in a single radio setup without the need for a discriminator output.' allows you to be able to monitor and decode the MPT1327 control channel and be able to follow voice channels with the use of 2 scanners and this application.

Trunkview is available from http://www.linato.net/trunkview/ and works on most Microsoft Windows operating systems, and all is required is a audio cable and/or a RS232 cable.

For a list of available MPT1327 sites, goto http://www.radioreference.com/apps/db/?tab=trs&stid=157&sort=type however this list may be outdated for certain areas.

Programming your PRO-96/2096 or DTS/DSE96 Digital Scanner

ARC96 supports the Radioshack PRO-96/PRO-2096/DTS-96 models in one single software package

http://www.butel.nl/products/arc96/arc96.html?gclid=CJ_phMvN25oCFQEMewodrTc5EA

 This is one of the easiest and quickest ways to program your scanner for the new P25 GRN system in NSW, all you need is your USB or Serial to PC/IF cable. Also allows you to enter alpha tags much easier then by hand to your talkgroups or PMR channels, as well as by Site name/number on your GRN control channels, or talkgroup's.