====== Connecting old Packet-Radio only transmitters via AX.25 ======

There are several reasons why one would like to connect an old AX.25 Packet-Radio only Transmitter to the DAPNET: 
  * No possibility to change the hardware due to restrictions or motivation
  * No IP connectivity at the transmitter location
  * Sentimental reasons to keep the RPC PCB :-)

For thoses cases we provide two possible solutions:
===== Centralized connection of the transmitter via IGATE =====

If you setup contains a Packet-Radio connection that is reachable via IGATE, this is the easiest way to get your transmitter migrated from //FunkrufMaster// to **DAPNET**.

Just do the following steps:
  - Add //db0sda-12// as master to your RPC and store it permanently.
  - Write an email to <suppport@hampager.de> and give the following information
    - The transmitter callsign
    - The AX.25 connect path to reach you RPC via IGATE
    - The desired timeslots you want to use
    - The geografical location in decimal form, e.g. N50.123456 E006.123456
    - The antenna gain minus the cable losses in dBi
    - The output power in Watt
    - the antenna height above ground im meters (not NN!)

The DAPNET team will check you request and provide a software solution with dapnet-proxy to connect your transmitter to the network.

===== Individual interfacing from AX.25 to TCP =====
If you don't like the centralized way of connecting your old AX.25 transmitter, you can also setup you own interface from AX.25 to TCP. A Raspberry Pi is enough to do so.

The following steps are needed:

  - Connect your RPC card by means of a USB-2-Serial converter
  - Setup the ax0 kernel network device with kissattach. Edit ///etc/ax25/axport// before.
  - Install xinetd
  - Add the file below to a file in ///etc/xinetd.d//
  - Use the DAPNET-Proxy to connect yourself with a DAPNET-Node
  - Get your new transmitter registered into the DAPNET network (see above)

<file>
# description: Example AX.25 Interface to DB0SDA C9000
service rpc_db0sda
{
disable = no
type = UNLISTED
port = 19999
id = funkruf
socket_type = stream
protocol = tcp
user = root
wait = no
server = /usr/bin/axcall
server_args = -r -S -R -s db0sda-12 -r ax0 db0sda-7
}
</file>
In this example //db0sda-12// is the defined master callsign in your RPC card and //ax0// is the AX.25 kernel-interface you created with //kissattach// and //db0sda-7// is the AX.25 connect path incl. the destination callsign (most probably only your RPC callsign).

Further information on the [[dapnetproxy|DAPNET-Proxy]] is [[dapnetproxy|here]].