开云体育

Previously posted on Facebook-APRS. It was suggested that I post here.

Looking for a APRS receive/decode/display map solution for a upcoming race event.? Most solutions revolve around an IGate. I would like to do with a SDR, Raspberry Pi and 10" monitor. Suggestions Please. Note: Internet unavailable. There are two digipeaters in the surroundings hills that will cover the race course. Thx, Chuck N7CHS

There are several solutions to your request. Obviously, YAAC will be promoted here (since I wrote it for exactly this kind of work), although there are other Linux/Unix APRS programs. However, a 10" monitor is probably going to be too small for a bicycle event if you are at the Net Control station and need to be able to see the entire course in detail. I typically use a laptop computer connected to a 40" flat screen for those events, but I have AC power available at those events. Other events I know of that have indoor Net Control locations use projectors as monitors. Now, if you're using APRS in a support vehicle, then the 10" screen is probably enough.

Now using a USB-connected SDR (such as the RTL SDR dongle) instead of a conventional amateur radio rig requires a bit more. A program called rtl_fm can configure such a stick to demodulate FM radio (such as 2M ham transmitters), and couple its output into Direwolf as the software modem/TNC for AX.25 packets. YAAC then connects to Direwolf to provide the graphical views of the received APRS packets.

Here's a link with directions for setting things up with the SDR and Direwolf:


Hope this helps.

Andrew, KA2DDO
author of YAAC

________________________________________
From: [email protected] <[email protected]> on behalf of Chuck Berry <n7chs.qsx@...>
Sent: Tuesday, April 28, 2020 7:15 PM
To: [email protected]
Subject: [yaac-users] APRS decode/map display, No Internet

Previously posted on Facebook-APRS. It was suggested that I post here.

Looking for a APRS receive/decode/display map solution for a upcoming
race event. Most solutions revolve around an IGate. I would like to do
with a SDR, Raspberry Pi and 10" monitor. Suggestions Please. Note:
Internet unavailable. There are two digipeaters in the surroundings
hills that will cover the race course. Thx, Chuck N7CHS