Archive for date: December 1, 2009

Wolves And Rabbits

December 1, 2009 | General | By: Mark VandeWettering

I really like programmpraxis.com. Today, they had an interesting little task, not so much for the program itself, but for what it reminded me of. But first, the task: basically to simulate a simple set of differential equations which model a predator prey relationship. It’s not that hard really, this just implements the model using […]

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Satpack: Arduino Satellite tracking and doppler tuning

December 1, 2009 | Amateur Radio, Amateur Satellite | By: Mark VandeWettering

Bruce, VE9QRP has a nice video demoing his qrpTracker code (open source) running on an Atmel AVR microcontroller and tracking the Doppler of a cubesat as well as AO-51. Nifty. httpv://www.youtube.com/watch?v=XgNcCGXeRyw Addendum: Back in January of 2008, I acquired my (then) new FT-817, and one of the first projects I did was to use my […]

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A night of WSPR spots…

December 1, 2009 | Amateur Radio | By: Mark VandeWettering

Got some interesting spots overnight. VK6BMW is located in Perth, Australia, which is pretty close to the maximum distance I’ve heard before. PA0LSK is in the Netherlands (any European spots are pretty rare for me). CO7WT is my first Cuban station spotted I think. Not a bad night. Timestamp Call MHz SNR Drift Grid Pwr […]

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