Gpredict 1.0 beta 2 released

Finally, the Gpredict 1.0 beta 2 release has come together, featuring a completely rewritten radio controller / Doppler tuning algorithm. It became a bit more complicated than I originally anticipated, because the incoming requests for improvement of the original controller did not limit themselves to controlling the downlink and the uplink, but also called for using two different radios.

Given that there are very few full-duplex radios out there designed for satellite communications and that they are very expensive, I found this request to be very reasonable and decided to implement it. The resulting controller should be able to work using receivers, transmitters, half-duplex transceivers, and combination of those. Full-duplex has not been implemented, because I am not sure whether hamlib is able to do that properly. That will be implemented in one of the upcoming betas.

The new radio controller
The new radio control UI. See more screenshots.

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The Sky on the Moon

Do you even wonder how the sky might look like from the surface of the Moon? I certainly did so recently and here is what I learned… We had some discussions on the Team FREDNET public forum about using the stars and the planets for guidance and navigation on lunar surface. Of course, it raised … Read more

Eeeham Status

Note: This page is now obsolete since I have installed Ubuntu 9.04 desktop edition on the Eeepc. This opens the door to use all ham radio applications available for Ubuntu!

Eeeham dedicated to ham radio applications on the Asus eeepc. The idea is to have a set of Linux ham radio applications built on a host computer and packaged and configured so that they can be run off an SD or USB disk on the eeepc. User data related to the applications shall be stored on the same disk. I think this is a good approach since it will keep the eeepc system disk clean of my experiments.

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Predict for the eeepc status

Just a quick note… I have started hacking predict to make it run on the eeepc. Tonight I manage to build the vocalizer on its own, i.e. without that silly installer that comes with predict. I have also modified it to use aplay (available on the eeepc) instead of the built-in DSP routine, which is … Read more