At 27C3 all lectures will be broadcast via DVB-T and reception will be possible in and around the bcc. Visitors can watch via TV if they want avoid overcrowded lecture rooms.
To receive the signal any PC with DVB-T-USB-Stick, TV set with DVB-T tuner or cellphone with DVB-T-function will work. We will publish all needed configuration files and a list of working and non-working receivers in the wiki.
The Bundesnetzagentur (German regulation body) has allocated channel 22 (482MHz) for us, where we will transmit with 6 watts ERP.
The last time DVB-T was available on Chaos Congress was at 24C3 where in some areas the signal was to much attenuated to be received properly. This year we come up against this with more transmission power, better
placement of the transmitter antenna and a new, better modulator.
Details are available at http://events.ccc.de/congress/2010/wiki/DVB-T