beacon: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/sbin/beacon - from package: ax25-tools

You may install the required package with command apt-get install {package}

Error in other languages:
beacon: bevel nie gevind nie
beacon: comandă negăsită
beacon: comando não encontrado
beacon: commande introuvable
beacon: command not found
beacon: käsku ei ole
beacon: không tìm thấy lệnh
beacon: komanda nerasta
beacon: Kommando nicht gefunden.
beacon: kommandot finns inte
beacon: komut yok
beacon: nie znaleziono polecenia
beacon: níor aimsíodh an t-ordú
beacon: no se encontró la orden
beacon: no s'ha trobat l'ordre
beacon: opdracht niet gevonden
beacon: parancs nem található
beacon: perintah tidak ditemukan
beacon: príkaz nenájdený
beacon: příkaz nenalezen
beacon: команда не найдена
beacon: командата не е открита
beacon: 命令找不到
beacon: コマンドが見つかりません