I understand that the HX-1 Radio Transmitter is an APRS, but how can I receive transmissions from this system? Could I track this with a RTL-SDR dongle?
Yes, an RTL-SDR dongle and Direwolf is one good way to receive APRS; there are many others. You can also rely on existing receivers passing data to the APRS-IS.
Also, with the NEO-6M GPS how do I receive ...
One reason why APRS is perfectly suited for such an experiment is that there is a physical network of receivers set up across the world. If your balloon is high up and transmitting its location on 144.390MHz, the chances are good that as long as it is near land where there is a certain density of amateur radio enthusiasts, someone will hear it and log it to ...
I am using firenet.aprs2.net and euro.aprs2.net for APRS-IS data.
If you need to fetch packets you have to connect to a server on a specific port.
Usually port 14580 is the one to use. Once a connection is established you are
supposed to authorize yourself using your callsign and password. Password is
a hash algorithm based on your callsign.
Here is an ...