APRS-IS => RF coverage in my area was weak, so I wanted to fill it in with an Igage. I already had a mobilinkd, Kenwood TM-V71 and a raspberry pi - so why not put them to work?
This site: https://idefix.net/~koos/newsitem.cgi/1484944367 was very helpful. Since since pages come and go, I'll try to boil it down to the important stuff.
Install packages for bluetooth
sudo apt-get install bluetooth
Find your mobilinkd. You are looking for a MAC address, something like
this:30:14:11:xx:xx:xx Mobilinkd TNC2
Prepare to pair. The PIN is 1234.
At this point, the light on your mobilinkd should be flashing slower b/c it is paired
Setup a serial connection from the bluetooth device to /dev/rfcomm0
rfcomm connect /dev/rfcomm0 30:14:11:xx:xx:xx 1 &
I built APRX from source because my first attempt was with a buggy older version on ubuntu. I pulled it from here: https://github.com/PhirePhly/aprx
If you don't have git, you'll have to install it.
sudo apt install git
Once you have it, you need to clone(copy) the source.
git clone https://github.com/PhirePhly/aprx.git aprx
Now that you have it, time to build it and install it
sudo make install
Did it build and install ok? This will show you the version and the help
There should be a sample config file at /etc/aprx.conf. In installed vim, because I'm used to it. You can edit it how you'd like.
apt install vim
At this point, the comments in the file and in the documentation are helpful, but I'll sum it up.
serial-device /dev/rfcomm0 19200 8n1 KISS
tx-ok false # do yo want to transmit?
telem-to-is false # do you want to report number of packets sent, etc?
cycle-size 30mRead the comments on beacon symbol and pick the appropriate one.
transmitter $mycallWithin the digipeater section, find the APRSIS source section
ratelimit 30 # packets per minute
filter -r/46.5/111.5/-150 # packets must be within a distance of this location
Options -v and -d are really helpful when troubleshooting why something is or isn't gated. I found when going from ARPS-IS to RF, it wouldn't work right away because my station had been heard too recently. Leaving the software running longer to get some history makes it work more like you'd expect, so be patient.
aprx -f /etc/aprx.conf
Be sure to watch aprs.fi to see what is going on.