For me to get started I used the YAESU FT991A which has the onboard sound card so its ready to go. Around the world different regions will use different frequencies for APRS so for Australia we will be tuning into 145.175MHz. But please lookup and use the appropriate APRS frequency for your region.
There are multiple tools to decode APRS as well as pushing all the decoded APRS messages up to APRS servers to share this is were you act as a IGate.
AFSK1200 decoder for APRS
- You can download the latest binary from Source Forge. I will not duplicate the efforts of others that have great HOW-TO on using this tool. As a starter I'd recommend the following video titled "Using AFSK1200 decoder for APRS decoding. Ham Radio".
- Once you have the sound level right the APRS messages should start appearing.
Setting up an IGate - Windows
- If you which to partake an become an IGate and upload the APRS messages you are decoding then again there are many options however for this article I will focus on using "APRSIS32" (APRS UI and IGate application) and "AGWPE" (TNS/Packet Engine that can decode APRS signals via Soundcard).
- Download the "free" version of the AGWPE and review the following information for installing and configuring AGWPE via SoundCard - "Basic AGWPE Program Configuration".
- Next download APRSIS32 and follow the instructions "Configuring APRSISCE/32 to use AGWPE"
- To publish APRS messages you need to request a "passcode". There is a online passcode generator that I found afterwards. But I'd recommend you follow the process of requesting as it does not take long for them to response with the code.
That's All Folks!
Stay tuned for my next post where I integrate "Direwolf" linux based KISS/TNS tool to decode APRS traffic from a feed tied into my SDRPlay RSP2PRo which is available online via SDR.hu call VHF (2m Amateur band) - Brisbane, Australia (VK4TMZ)(OpenWebRx).
73 de VK4TMZ
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