Start Direwolf at Boot, the SystemD way
The ways to start Direwolf at boot, as provided in the manual, are quite archaic and hacky. Let’s see how we can do this in a more modern way using systemd.
Doing APRS Voice Alert with CRT 2M / Anytone AT-588
After trying and failing at getting a working APRS set-up with voice alert here is my last try with a CRT 2M Radio, a rebranded Anytone AT588.
Putting a 3.3V HC-05 module in the Tinytrak 4
If you followed my previous adventures with the Tinytrak 4 and Bluetooth you may know that I used HC05 modules which where RS232 levels capable. I bought these years ago and, as of today, they …
HC-06 and Tinytrak : Fail
A couple of month ago I Bluetooth enabled my second Tinytrak 4 using a HC-06 module. It turned out this failed after a few weeks and the HC-06 is not usable for APRS.
Retevis RT98 for APRS, review 8 weeks after
After almost 8 weeks of using this little radio for my mobile APRS operations I thought it’s a good time to provide some feedback. I must admit I have mixed feelings about this radio…
Analog vs. Digital APRS
I keep on reading about “Digital APRS” vs “Analog APRS”. Youtube and social media are full of these words. This is utterly wrong. Whenever I hear “Analog APRS” I’m going mental: “Analog APRS” simply does …
Bluetooth and TinyTrak 4, episode 2
I got myself a second TinyTrak 4 and wanted to Bluetooth enable it like I did for my first one. I went a different route using a different module and wiring it another way.
What is APRS Voice Alert ?
Ever got frustrated of not being able to contact a passing by station you just saw on APRS? APRS can also work as a nearby station radar and help you out with that.
Using the Retevis RT98 for APRS with voice alert
My TYT THD9000 started to exhibit some strange behavior, after transmitting it sometimes needs half a second to switch back to receive. So I was in the market for a new APRS radio and came …
Howto: AX25 as a Systemd Service
In this article we’ll see how to run AX25 as a Systemd service, bringing the AX25 interface up on every boot and also putting the TNC into kiss mode. Having an AX25 interface allows you …
Putting Bluetooth into the Tinytrak 4
Byonics provides a Bluetooth add-on for the Tinytrak 4. While I love the TT4 I am not a huge fan of their TT4BT Bluetooth solution. It consists of a board with 2 DB9, no case …
Why are APRS RX only iGates bad ?
Every now and then I keep on reading on social networks or forums how people set RX only igates up. RX only igates are just bad, really bad. I could just leave you with the …
APRS.fi is not APRS-IS
There is a widespread belief that aprs.fi is the internet backbone of the APRS network. It is not uncommon to read posts on social networks saying “I am connecting to aprs.fi with aprsdroid” or “I …
Oops! I did it again!
No, I am not writing a blog exclusively about the TYT TH9000D. However I actually managed to run into the dreaded gibberish characters issue for a second time and to recover the radio!
APRS with Tinytrak 4 and TYT TH-9000D
After a couple of frustrations (here and here) I have finally managed to get my TYT TH-9000D running quite well with my Tinytrak 4. After a few weeks using it I must say I am …
Solved TYT TH-9000D Gibberish Characters / Locked CPU Issue
Next episode of my TYT TH-9000D for APRS adventures (first episode here). Somehow I managed to run into the gibberish characters issue, after swearing a few minutes I went to my friend Google only to …
And so I wanted to use a TYT TH-9000D for APRS …
I was in the market for another radio for my mobile APRS operations. After reading various articles (here and here) about the ability to add a D-SUB9 connector with all relevant signals for that matter. …
