HB9NOS uses the LinBPQ software running on a Raspberry PI 3+ with Rasbian v4.1.6-v7 as operating system. To make connection to the transcievers TX and RX signals and decode the packets Direwolf is used. HB9NOS and the APRS I-gate are online 24/7 on 27.235 MHZ FM. HB9NOS is connected to the internet to setup netrom links to other stations and act as gateway between the 11m and the internet.
BPQ allows a computer to act as a Node in a NET/ROM compatible AX25 network, and to support a multiuser Mailbox.
The switch section allows up to 32 ports, supporting a number of radio protocols. The application supports up to 64 connections. The software includes an APRS digipeater and an interface to APRS/IS.