APRS: Data received via ISS

A clear pass over Portland, OR at 4:02PM on 5/2/2011. Here’s the data from the TNC. 0:TX -> K2NXF>APX200,WIDE2-2::RS0ISS-4 :Hi all via ISS…

Experiments with the ISS

I’ve attempted for months to catch a signal from the ISS as it quickly flies over head. Being in such a low-earth orbit,…

PHP: Geocoding with cURL and JSON…

wanting to balance the work load for a site between server-side and client-side tasks, i abstracted this very simple geocoding class with Google…

experiments with SSTV…

The other day I was able to send transmit and receive an SSTV transmission across the room using two Yaesu HTs and a…

Bending notes with PT2399…

i’ve been experimenting with this PT2399 chip and using various schematics to create a digital delay circuit. the delay time seems to be…