Sound Card
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Introduction
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Radio Mobile Deluxe and AGWPERadio Mobile Deluxe (RMD) is a program that predicts radio propagation and signal path quality over specific terrain using digital elevation maps. It is quite an amazing and powerful program. One of its features allows you to capture and plot APRS packets on the elevation maps using AGWPE. You can then "see" how well APRS digipeaters, home stations, and mobile stations will "hear" other's packets. You can download the RMD files at: Français:
http://www.cplus.org/rmw/index.html Note that RMD is difficult to setup and learn, and downloading digital elevation map data can be time consuming if you only have a dial-up internet connection. General instructions for program use are beyond the scope of this web page, but the specific setup for AGWPE is as follows: 1. Install and configure AGWPE and first test that AGWPE is working with AGWTerm. 2. Install and configure RMD. Create an RMD map for the APRS coverage area you wish to examine (see RMD's Help file). 3. From the RMD menu, select Options, then APRS Options. In the resulting APRS Setup window, do the following:
APRS station callsigns should begin to appear on the RMD map and then disappear when a new station is heard. After the positions of relaying digipeaters are also received, RMD will then display the station originating the packet, the digipeater(s) it was heard through, and signal path lines connecting all of them. To "permanently" display an APRS station position, use the lower half of the APRS Options window to make an APRS station in the left column become an RMD network "unit": check mark an available unit name/number in the right column, then highlight the APRS unit in the left column and press the arrow key between the two columns. You can also add the APRS stations into a RMD "network" if you want to further examine APRS coverage and the APRS digipeater network, but explaining how to do that is beyond the scope of this page. You'll have to work with and learn RMD.
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| Last Updated: 06/23/2008 |