Setting up Packet Radio on a Raspberry Pi (5 thru Rpi1) running Rasbperry Pi OS Bookworm, Bullseye, Buster, Stretch or Jessie

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This document is intended for new users to both Raspberry Pi SBC computers and the Raspberry Pi OS Linux based 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 Raspberry Pi OS Linux distribution and specifically to support any quirks wth the Bookworm (Debian 12.x), Bullseye (Debian 11.x), and Buster (Debia n10.0) versions of Raspberry Pi OS as well as some legacy versions like Stretch, Jessie, and even Wheezy (non-SystemD based) OS versions. This document includes many optimizations for improved hardware reliability, maintainability, SD storage card life and many security hardening steps for sustaining a direct connection to the Internet. This setup also offers direct connections via a Wifi or Bluetooth connection via say a smartphone/tablet for off-Internet communications and maintenance.