Raspberry Pi HDTV Transmitter

Alexandru Csete OZ9AEC has detailed how to turn your Raspberry Pi into a live HDTV transmitter

He notes that the setup can be made small enough to be carried by a medium size drone and the range can be increased using power amplifiers.

Full information - http://www.oz9aec.net/index.php/dvb/490-turn-your-raspberry-pi-into-a-live-hdtv-transmitter

Beta Testers Sought for New Heavens-Above Android App

Creators of the Heavens-Above Android App are looking for Beta Testers to help the Apps development.

A few features of the app:

• Spacecraft visibility predictions based on current GPS location
• Visibility calculations are done on the device, so you only need to go online once every few days to update the list of orbital elements
• Works on phones and tablets
• Live Sky Chart, which shows all currently visible satellites
• Prediction of Iridium flares

There will be two versions of the app, one will be free of charge and will include advertisements, the other will be a paid for version without ads. The price is still to be determined.

To participate, just send an email to chris.peat@heavens-above.com from your Google mail account (or let Chris know the name of your Google account) and you will be added to the Heavens-Above testers community. You will then receive an invitation with further instructions on how to download and install the test version of the app. The first official release will be available to all for download from the Google play website.

A forum is also available on the Heavens-Above site - http://www.heavens-above.com/forum/default.aspx?g=forum&c=5

Yagi Radio Antenna Designer Website

Derek Hilleard G4CQM, has launched a new website which details only his very best VHF/UHF AOWA & FLOWA yagi designs produced in the last two years.

The difference is a full and forensic analysis of each design including Q-factor which has been ignored for too many years!

Myths surrounding reflectorless yagis have also been explored.

Visit - http://www.antennadesigner.co.uk/