Ham Radio Documents by N8URThese are documents I've written, and some presentations I've created, that relate to ham radio, and to packet radio in particular. (There's other stuff I've written scattered throughout this web site, but these are the ones that started life as documents and then turned into web pages, rather than the other way around...)
You are welcome to use these in their entirety (with my title page and copyright notices included) for non-commercial purposes, but please don't edit or modify them, or cut-and-paste from them into other documents or presentations, without first obtaining my consent.
I've recently put together some material on optimizing the "radio" part of packet radio. Go to Let's Not Forget Layer One! to see it.
Our local group has made extensive use of the Kantronics D4-10 DataRadio for packet radio networking. We've learned a lot along the way, and this article documents the tricks and traps we've found: Care and Feeding of the Kantronics D4-10. (40k)
We've modified a couple of the TAPR 9600 baud modem kits to work at 19.2kB and to serve as bit regenerators/controllers for full duplex digital repeaters. Here's a summary (originally a couple of email messages written in October, 1994) describing the mods we made: TAPR 9600 Baud Modem Modifications for 19.2kB.
Here's some information on converting a PacComm Tiny-2 TNC for use with the D4-10 radio at 19.2kb in "RF Modem" mode: Tiny-2 Mods for the D4-10.
And, here's similar info for the MFJ-1270C TNC: MFJ-1270C Mods for the D4-10.
Several years ago, I wrote a beginner's guide to amateur radio TCP/IP. I'm currently rewriting that document into a book which will be published by TAPR next year. In the meantime, here is the original paper (the html conversion is a little ugly): IntroNOS: Getting Started with TCP/IP on Packet Radio . (70k)
Here are some presentations I've given on various topics. They are all done with Microsoft PowerPoint. If you don't have PowerPoint on your system, here are free PowerPoint viewer programs you can download from Microsoft.
This is a presentation on Packet Radio Basics that I recently gave to my local radio club. (113k)
This is a presentation on Using AX.25 with the Linux Operating System that I gave at the 1998 Dayton Hamvention TAPR Digital Forum. (84k)