Green Bay Professional Packet Radio

G reen B ay P rofessional P acket R adio is our attempt at an advanced wireless communication research team. Based in Green Bay, Wisconsin, we have banded together a small group of specialized residents who strive for the advancement of modern forms of electromagnetic wave communication. We specialize in high-speed wireless data (packet), digital voice transmissions, ELINT/EW/ECM, radar, antenna design, bi-phase modulation and also the hardware/software side of all those types of communication. We are die-hard radio homebrewers and experimenters. While other people are drooling on nothing more than glorified ice cream truck 2-way radios, we are out using new and efficient modulation techniques and pioneering new developments in modern radio. We've also homebrewed microwave radio bi-directional amplifiers for the local packet radio links, circular polarized repeater antennas, high quality audio hardware and all types of RF test equipment. Modeled from the concepts originated by Clarence 'Kelly' Johnson (of Lockheed Martin Skunk Works fame), we attempt to push the boundaries of modern radio and antenna technology. Using common off-the-shelf components, old VCRs, cellular phones, lots of trips to Radio Shack and, of course, well established theory. We will always forge on. Building and testing new designs while quietly ignoring anyone who tells us something is not possible.

"Man who say it cannot be done should not interrupt man doing it."

Amateur Radio Projects

Other Projects

Local Terrain & RF Plots

"Leave the beaten path and dive into the woods. You are certain to find something interesting."

Interactive Wireless / RF Design Utilities

GBPPR Microwave Radio Path Analysis Tools

Advanced Wireless Communications Research Links

Fractal Antennas / Fractal Geometry

RF Design Notes & Links

GBPPR - Facts Not Drivel

FCC Compliance

Part 97.309 & 97.311 compliance specifiations and source codes to the programs used in our amateur radio networks. Don't be stupid. Passwords on all amateur radio nodes are either the user's callsign or disabled. gzip Compresses and Decompresses Files

mod_gzip For Apache Web Servers

OpenSSH OpenSSH is used in compression mode only

Brutalcopy Pushes data using UDP protocol through rotten, overloaded and otherwise disgusting lines

Vtun The easiest way to create Virtual Tunnels over TCP/IP networks with traffic shaping, compression and encryption

Amateur Radio ID'ing via ICMP Echo Request Packets ID using ping packets and MAC manipulation.

Toward New Link-Layer Protocols for Amateur Packet Radio

Spread Spectrum Rule Recommendations

Ideas for HF Modulation and Coding

Proposed Coded AO-40 Telemetry Format

Amateur Radio, Wireless Networks and the Information Age

Physical Layer Considerations in Building a High-Speed Amateur Radio Network

A Technological Rationale to Use Higher Wireless Frequencies

A Mathematical Theory of Communication

An Overview of the Application of CDMA to Digital Cellular Systems and Personal Cellular Networks

A Method of Reducing Disturbances in Radio Signaling by a System of Frequency Modulation

Shannon, Coding and the Radio Amateur

TAPR Packet Status Register Archives

TAPR Packet Status Register Archives Attempting to put all the TAPR Packet Status Register issues in one place.

The Shape of Bits to Come

Various TAPR Digital Communications Conference Speeches

Microwave Associates (M/A-Com) Gunnplexer Notes

MMDS Downconverter Notes & Applications

Archived Down East Microwave Inc. Design & Library Notes

Amateur Radio Repeater Notes

Radar & Military Communications

Hardware & Parts Suppliers

GBPPR Contact Information