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F4FXL

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Life without knowledge is death in disguise

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Policy based routing and Wireguard
Ham RadioMiscamprpolicy based routingwg-quickwireguard
I am running several DStar repeaters using an AMPR Net public IP address. In this article we’ll see how to route only specific (Ham related) traffic through that address. Why ? I wanted only ham …

Source

https://www.f4fxl.org/?p=45924
Extensions
APRSDroid and dual port Direwolf
APRSHam Radioaprsdirewolf
In my mobile setup, I want to run a Direwolf instance with two ports (VHF and HF) on an Orange Pi Zero. APRSDroid is used to monitor both ports and send messages through them. Since …

Source

https://www.f4fxl.org/?p=31875
Extensions
Building a VHF / LoRa APRS Bridge
APRSHam Radioaprsdirewolflora
In this article I will expose how I built a VHF (1200bps AX25 APRS) to UHF LoRa APRS Bridge without going through APRS-IS (Internet). This is work in progress, feel free to comment and come …

Source

https://www.f4fxl.org/?p=30634
Extensions
Introducing DStarGateway
DStardstardstargateway
In december 2021 I started to work on a project “by accident”. This project is called DStarGateway What is it? DStarGateway is based on Jonathan Naylor G4KLX ircddbGateway. It adds some features while dropping some …

Source

https://www.f4fxl.org/?p=16915
Extensions
Building Xastir from sources
APRSHam Radioaprslinuxxastir
Most of Linux distributions have Xastir in their repositories , yet most of the time it is not the latest version or it is seriously outdated. Let’s see how we can build the latest version …

Source

https://www.f4fxl.org/?p=16125
Extensions
Simple audio streaming server using socat
Miscaprslinux
I was suspecting a receive issue on our club’s mountain top APRS digipeater. To spare me the 1 hour drive to listen to the radio’s audio I came up with the idea to remotely stream …

Source

https://www.f4fxl.org/?p=15043
Extensions
Modding the Kenwood TM-271 for voice alert
APRSHam Radioaprskenwoodtm-271voice alert
I have been using the TM-271 for my mobile APRS operation for over 18 Months now. Here is a quick article on how you can enable the radio for APRS Voice Alert. It is all …

Source

https://www.f4fxl.org/?p=14433
Extensions
We do not give a f*ck about your repeater!
APRSAPRS ExplainedHam Radioaprs
Here is a provocative/clickbait headline, and it is on purpose. Today I want to rant about APRS sysops abusing objetcs. Usually I try to keep the content here technical, but now is the time for …

Source

https://www.f4fxl.org/?p=14362
Extensions
Direwolf: add pre-emphasis to your AFSK signal
APRSHam Radioalsaaprsdirewolfkenwoodlinuxtm-271
Direwolf is very capable software TNC, yet it is not yet possible to add twist between the high and low tone e.g if you want to feed 1200bps to the 9600bps flat audio input of …

Source

https://www.f4fxl.org/?p=14326
Extensions
Setting optimal receive level for the Tinytrak 4
APRSHam Radioaprstinytraktt4
Recently I got myself a Kenwood TM-271 and wanted to give it a go on APRS with the TT4. This turned out to be more complex than expected. Once the TM-271 and the TT4 were …

Source

https://www.f4fxl.org/?p=6229
Extensions