IMG_1087 Olmsted Point, Yosemite National Park, California.

Old-school screenshot of the little field station I threw together, to avoid using the X11 disaster that is xastir.

 

It consists of:

* openlayers, an all-javascript open source slippy map (ie a google maps clone, but much much more)

* map tiles of California and Nevada rendered from the OpenStreetMap dataset

* hillshading/relief tiles in alpha-channel PNGs, for overlay on the street map, derived from the SRTM data.

* a web browser and apache (due to browsers' stupid rules about security when it comes to file:/// urls)

* a hand-crafted port of sox to record audio to stdout on OS X

* a hacked multimon to take 8bit mono audio samples on stdin and demodulate them to TNC2 format on stdout

* a perl script that takes TNC2 on stdin and updates a KML file for a given call sign

* gpsd, running against local Garmin GPS

* a perl script to update a KML based on gpsd samples

 

(The hillshading is not rendered at the zoom level pictured, hence the transparent broken image icons!)

Done