Rpi-aprs-axports

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/etc/ax25/axports

The axports file configures the link between an AX.25 interface and the callsign it's working for.

# /etc/ax25/axports
#
# The format of this file is:
#
# name callsign speed paclen window description
#
sm0     VK2HAQ-1        1200    255     7       VHF APRS (1200  bps)


The first column [name] (here 'sm0', without /dev/) needs to match the system's interface name:

Example:

root@aprs:/etc# ifconfig sm0
sm0       Link encap:AMPR AX.25  HWaddr VK2HAQ-1
          inet addr:44.128.0.2  Bcast:44.128.0.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:256  Metric:1
          RX packets:113 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:10
          RX bytes:8662 (8.4 KiB)  TX bytes:0 (0.0 B)

root@aprs:/etc#


The second column [callsign] (here 'VK2HAQ-1') needs to match the '$mycall' variable in /etc/aprx.conf:

Example:

<interface>
   ax25-device   $mycall
   tx-ok         false  # transmitter enable defaults to false
   #telem-to-is  false # set to 'false' to disable
</interface>