A series of half hour technical talks of interest to hams.
cping is an open source program that can be used on Linux, Windows and MacOS for real time network monitoring, tracing the path of packets and following how they path changes with time and locating intermittent network problems. The talks cover a little bit of how ping and traceroute works, and how to use the program.
How to stream video with the least cost and minimal brain damage.
There are myriad QSO logging applications in the world specialized for almost every niche of ham radio, but I felt the need to create yet another. I hope this will be among the first of a new breed of QSO logging applications.
Forester is a web application, but has distinct advantages over contemporary web logging sites. Built from modern tools like Angular and Firebase, Forester can be used without an internet connection, and syncs in real-time between multiple devices when internet connected. It connects to digital mode and rig control software through a small agent program. It's all open-source and built in a modular way so that other amateur radio programmers might benefit from the effort.
Slot antenna fundamentals and build considerations; followup data from last year's V/UHF mobile antenna experiments; other work being done; next steps.
Power Point Presentation. Overview of the application process the steps needed to maintain Tax-exempt status over the organizations lifetime
A look into time, how computers manage it and convert it, how the GPS system delivers it, how RTCMs use it and why that took down all the RTCMs in the world on 1/1/2021 at 00:00:00. Background of the problem and the fix...
Wireless mesh networking protocols, such as APRS and Gotenna Mesh, allow for reliable communication between devices by relaying data between nodes until the data reaches its destination. While these mesh networks successfully communicate telemetry and small data bursts, they cannot provide the continuous streaming bandwidth needed to carry real-time voice communications. Presented here is QMesh, which leverages the FM capture effect in the LoRa waveform to allow for reliable synchronized, flooded mesh networking that can support low data rate digital voice communications. An overview of the theory, protocol design, experimental hardware, initial test results, and plans for QMesh will be discussed.