9600 Baud Packet Radio TCP/IP

Goal: Assemble a pair of systems to show just how capable 9600 baud TCP/IP really is.

Pack the two systems into demo case (Home Depot Rollaround?)

Go to a conference and this system should be able to be laid out on a tabletop; one unit is a server, the other unit is a client.

Communicate tabletop to tabletop.

Components for each system (there will be two systems)

  • Azden PCS-9600D - UHF
    • 12V DC Power (PowerPole cable)
    • Dummy load (in lieu of antenna, should be adequate for tabletop)
    • Signals cable to the TNC
  • AEA PK-96 (or, ideally, TNC-Pi 9600 baud)
    • 12V DC Power (PowerPole Cable)
    • Signals cable to the PCS-9600D
    • RS-232 cable to the computer
  • Computer (see discussion below)
    • 12V DC Power (may need regulator / adapter to handle 12V DC)
    • RS-232 cable to the AEA PK-96
  • 12V power Supply
  • Packing / padding
  • Documentation (see below)

Computer Considerations

  • It would be great if the computer would be a Raspberry Pi 2, but that might be a bit too geeky, and there are going to be enough cables and other bits that a separate computer module, display, keyboard, mouse, etc. might be a bit overwhelming and UNattractive. If using a Raspberry Pi, you'll need:
    • Display
    • Keyboard
    • Mouse-ish device
    • SD card with appropriate OS and applications
  • A better alternative to the Raspberry Pi might be a $200'ish Chromebooks that can be updated with a full (enough) Linux implementation.
  • Either one, there will need to be a full TCP/IP applications stack:
    • Web Server (in a box)
      • Lots of cached content
    • Web Browser
    • Mail Server
    • Mail Client
    • Usenet Server
    • Usenet Client


  • Block Diagram
  • List of units / components and (as applicable, where to buy them)
  • Schematics of all cables
  • List of packages to install in the Linux


  • Create a digipeater to demonstrate that digipeaters work… but not great
  • Create a pseudo repeater
    • Back-to-back radios separated sufficiently to not require a duplexer
    • Demonstrates how repeater increases the throughput above a digipeater
  • Second set of radios on 220 or 144 to demonstrate full duplex
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