“This document is intended for new users to both Raspberry Pi SBC computers and the Raspbian based Linux operating system. This doc will help the user create a reliable device that operates as an AX.25 / APRS packet radio system with GPS support. This guide is focused around the Raspbian Linux distribution, specifically the “Stretch” or 9.0 version. This document also covers the previous Jessie version of Raspian which both of these versions use the new SystemD method of configuration. This document includes SD card hardening with a relatively secured configration for general connection to the Internet. It’s also directly manageable via Wifi via say a smartphone/tablet for off-Internet maintinace as well”.