rtlsdr-airband : RTLSDR AM demodulator with support for multiple channels per dongle ( https://github.com/szpajder/RTLSDR-Airband )
rtlsdr-ogn : OGN radio message to APRS relay ( https://github.com/glidernet )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a bitcetera
For Paludis use this rsync : rsync://gentoo.zugaina.org/bitcetera-portage
If you have a problem : ycarus(-at-)zugaina.org