Articles, notes and random thoughts on Software Development and Technology
I’ve been playing around trying to get a working config for using Direwolf as a soundcard modem for packet radio on the Raspberry Pi. I’ve played with getting ax25 and Direwolf running on Ubuntu (see here), and then I tried to copy across what I’d learnt to the Pi (running Raspbian). The trouble with a lot …
Continue reading “Packet Radio: AX25, Direwolf and Linpac on a Raspberry Pi”
Getting soundcard levels with alsasound on Linux dialed in for any Amateur Radio soundcard based comms can be tricky (at least in my experience). If you’ve plugged in an additional USB soundcard device like a Rigblaster or a SignaLink, it’s important to know that the ‘master’ volume level in alsamixer applies to all soudcards. Make …
Continue reading “Linux, Direwolf packet radio and alsa sound levels”
I’ve been playing around with Direwolf soundcard packet radio decoder on Linux. On Windows I use the packet terminal app that comes with the UZ7 soundcard modem, which you can connect to Direwolf’s AGW port over a network. The only comparable app on Linux that I’ve found seems to be LinPac. Linpac connects over an …
Continue reading “Direwolf soundcard packet on Linux, with ax25 and LinPac”
rtl_fm is one of the utilities from the rtl_sdr package for using a TV dongle as an SDR. Head over here if you need more info on this. Direwolf is a soundcard based packet modem. According to the Direwolf docs, it supports using rtl_fm as an input, so I thought I would take a look …