Differences

This shows you the differences between two versions of the page.

--- datatrak:start [2020/07/11 13:47] – [Datatrak reverse-engineering] philpem
+++ datatrak:start [2022/11/16 10:58] – [Datatrak reverse-engineering] philpem
@@ Line 7: / Line 7: @@
 I'm currently trying to build a desktop Datatrak LF signal simulator, and reverse-engineer the receiver to the point where they could be used to receive signals in the 136kHz (2200 metre) UK LF amateur radio band.
-You may also find my presentation at CampGND interesting: [[https://panels.sneptech.io/campGNDd_RadioLocation_Datatrak.pdf|(slides)]] [[https://www.youtube.com/watch?v=nB_3iod6LR8|(recording)]]. It was difficult to cram so much into 30 minutes and is quite fast paced. Hopefully I'll be able to give a more detailed talk at a later time!
+You may also find the presentation I gave at CampGND 2020 interesting: [[https://panels.sneptech.io/campGNDd_RadioLocation_Datatrak.pdf|(slides)]] [[https://www.youtube.com/watch?v=nB_3iod6LR8|(recording)]].
+I presented an [[https://www.emfcamp.org/schedule/2022/121-inside-datatrak-resurrecting-a-radio-navigation-network|updated version of my talk at EMF Camp 2022]], but mostly covered the hardware reverse-engineering side of things. Sadly EMF's camera broke (or something) and my talk was one of several which weren't recorded.
 ===== Contents =====
   * [[datatrak:intro|Introduction to Datatrak and hyperbolic navigation]]
   * [[datatrak:signal|The Datatrak signal]] -- technical details
-  * [[datatrak:uhfdata|The Datatrak UHF data return channel]] -- technical details
   * [[datatrak:network|The Datatrak transmitter network (LF and UHF)]]
   * [[datatrak:receivers|Datatrak receivers (Locators)]]
   * [[datatrak:mk2pinout|Locator Mk.II pinouts]]
-  * [[datatrak:mk2schematic|Locator Mk.II reverse-engineered circuit diagrams]]
+  * [[datatrak:mk2hardware|Locator Mk.II hardware]]
+  * [[datatrak:mk2firmware|Locator Mk.II firmware notes]]
   * [[datatrak:rom_emulator|Locator Mk.II EPROM cartridge emulator]] -- a replacement EPROM cartridge which allows fast-turnaround firmware patching and debugging.
-  * [[datatrak:simulator|Datatrak test signal generator]] -- simulates a constellation of Datatrak transmitters.
+  * [[datatrak:simulator|Network Simulator]] -- generates signals which simulate a network of Datatrak transmitters.
   * [[datatrak:software_tools|Software tools]] -- for analysing the network based on data obtained from Locators
+  * [[datatrak:recordings|Signal recordings]]
   * [[datatrak:references|References]] -- other sources of information
+===== Media coverage =====
+**NEW - April 2022**
+Datatrak was featured on TV several times during its development.
+Thanks to Alasdair for finding these and sending the links. Both videos are on Youtube.
+  * [[https://youtu.be/vufhclj5dFM|BBC Tomorrow's World, 28 May 1987]] -- featuring either a prototype or Mk.1 Locator being demonstrated in the London area, using the initial three transmitters.
+    * Shows early demonstration software and either a prototype or Mk.1 Locator receiver.
+  * [[https://youtu.be/HWz9sqVGFKI|Top Gear, 1990 season, 5th episode]] -- Jeremy Clarkson tries to steal a Vauxhall Cavalier (!) which was fitted with Datatrak.
+    * This episode also features the Autotag immobiliser, which allows the car to be remotely disabled using a radio paging signal.
+    * Shows what is believed to be the later 'base station' software used by the Datatrak call centre at the time