Installing PAT Winlink client on MacOS

Quick notes:

  • download the .pkg from and run it
  • run ‘pat configure’ set your callsign, password and gridsquare
  • run ‘pat http’
  • open localhost:8080 in your browser

At this point you can connect using the telnet option to send and receive over the internet.

Will look at using Direwolf for access via radio later.

Connecting APRS apps to a software TNC over your network

A useful feature of Direwolf is that it exposes an AGWPE port on your local network that you can connect to across your local network. I use this feature to run an APRS app on my laptop elsewhere in the house with Direwolf running on a Raspberry Pi beside my 2m radio in my office upstairs.

With the YACC APRS app, this is as easy as adding an AGWPE port in the app and pointing it to the IP and 8000 port of the Raspberry Pi where Direwolf is running:

Revisiting Packet Radio on a Raspberry Pi with Direwolf: part 2 (minimal installation)

This is a continuation of part 1 here. To summarize the required steps to setup ax25 and Direwolf for software based packet radio, here’s the minimum steps need to get up and running:

Install libasound2-dev and libudev-dev:

sudo apt-get install libasound2-dev
sudo apt-get install libudev-dev

Clone the source for Direwolf, then build and install:

git clone

Compile and install Direwolf (build steps changed recently):

cd direwolf
mkdir build && cd build
cmake ..
make -j4
sudo make install
make install-conf

Plug in a soundcard device like a Signalink or Rigblaster, run ‘aplay -l’

Get the device number, in this case my Rigblaster is 2,0:

card 1: vc4hdmi [vc4-hdmi], device 0: MAI PCM i2s-hifi-0 [MAI PCM i2s-hifi-0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 2: Audio [RIGblaster Advantage Audio], device 0: USB Audio [USB Audio]
Subdevices: 1/1

Configure ~/direwolf.conf – change ADEVICE to refer to the device number from the previous step:, and then set your call sign:

ADEVICE plughw:2,0

Run alsamixer, select your soundcard attached to your radio, and make sure playback and capture sound levels are around 70% and not muted:

Install ax25 apps and tools:

sudo apt-get install libax25 ax25-apps ax25-tools

Add 1 line in /etc/ax25/axports – the number in the first column is the port number, you’ll need this in the next steps:

1 KK6DCT-1 1200 255 2 2m packet


direwolf -t 0 -p

Look for the last line for /dev/pts:

Ready to accept KISS client application on port 8001 ...
Virtual KISS TNC is available on /dev/pts/0
WARNING - Dire Wolf will hang eventually if nothing is reading from it.
Created symlink /tmp/kisstnc -> /dev/pts/0

Run kissattach:

sudo kissattach [/dev/pts/value here] [ax25 port value here]


sudo kissattach /dev/pts/0 1

You should see:

AX.25 port 1 bound to device ax0

Now you’ll set to use the ax tools to connect to other nodes, for example, run:

axcall [ax25 port number] [nodename]