Guy buys some cheap laser modules, scavenges parts from a couple of old scanners, and builds himself a laser stencil cutter. Uses Postscript to generate the cutting paths, an idea which Don Lancaster called a Flutterwumper.
Daily Archives: 1/1/2008
Kenwood TH-D7AG Quick Reference Sheet
As uploaded to the Yahoo! group for TH-D7A owners…
PLAN-13 Satellite Position Calculation Program
G6LVB has a really nifty website, which includes plans for a neat little PIC powered antenna tracker. The writeup says that it used the “Plan 13” algorithm for G3RUH, which I had never heard of before. A little judicious Googling reveals:
PLAN-13 Satellite Position Calculation Program
This algorithm seems much simpler and more straightforward than the SGP4 stuff that most other programs use. I might just code this up in Python (or C maybe) for future experimentation.