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Episode 118 – Raptor vs RAM TRX

Posted by on October 18, 2016

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On this episode of The 4×4 Podcast, Craig re-joins Rich and Dan to talk about some interesting bits of news.

In the news:




Offroad APPtitude:. Avenza PDF

Offroading 101: simple traction aids

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  • klaeufer

    Thanks for the informative episode! To build on your discussion of the Land Cruiser Emergency Network, I found this original post by the advertising company: It appears that the Cruisers were chosen in this pilot project for marketing reasons (Toyota is the client) and there nothing vehicle-specific about the communication devices.

    It appears that Flinders University did the communication networks research underlying the system. By delay/disruption-tolerant networking, they basically mean a wireless mesh network that handles situations where nodes can be disconnected from the rest of the network for some time and store the messages they are supposed to relay until they get reconnected. This is an interesting problem because nodes move around and might get reconnected to different sections of the network than before, so the network has to figure out dynamically where to send the stored messages. There is some good additional info here:

  • klaeufer

    Regarding the Avenza PDF Maps app, I have used this for hiking and scenic backcountry driving for a couple of years.

    The easiest way to get a georeferenced map into the app is to search for it within the app; more and more pertinent maps, including MVUM, USFS, USGS, BLM, NP maps are available in this way.

    To georeference a scanned map image, you basically need to specify the actual coordinates of three or four points on the map and then use a suitable tool to georeference the entire map. You can determine reasonably accurate coordinates by matching topographic features on your map with, say, Google or CalTopo maps. Here is the tutorial I have used for this process, using the free/open-source QGis tool:

    There is also this free/open-source online tool:

    Once you have the georeferenced version of your map, you can transfer it from your computer or upload it to Dropbox, then import it into the Avenza app.

    I hope this helps.