Hi Harald, Am 04.06.2011 21:06, schrieb Harald Welte: I can confirm that a 5W test license is possible. At the Univeristy of Freiburg we have a license for three ARFCN with 5W ERP max. The license was pretty easy to get. The application was just an e-mail with an the addition that we like to have a licence with the most possible transmission power. The Bundesnetzagentur also confirmed that a license in Karlsruhe with 5W as part of the GPN 2011 [1] is possible. The 18 meters above ground could be a problem in combination with the high output power. Our test license is limited to some meters above ground. At the moment I don't have the exact maximum height but I thing is is something between 5 and 8 meters. We have two nanoBTS-Booster 1800 here at the university. If for some reason the Ericsson RBS is not working it should be possible to lend you the two bossters for the time of the camp. We also have a splitter and combiner. I will test the splitter/combiner in combination with a booster at the GPN end of this month. Best Regards Konrad [1] http://events.ccc.de/tag/gpn/

Hi all! The camp is getting closer and closer. In the past weeks, folks like Sylvain, Dieter and I were trying desparately to find a good technical solution for running the GSM network at the CCC Camp. The original intention of using the Motorola Horizon macro BTSs has unfortunately not worked out, despite spending man-weeks of time in exploring and reverse engineering the highly proprietary Motorola variant of GSM. While it has been a fascinating journey in distributed systems, it has not come anywhere close to using the equipment for actual network operation. The nanoBTSs that we use during the 26C3, 27C3 and other events are too low-power / low-range for the area we want to cover. There are some boosters and LNAs, but we don't have them in the quantity that we anticipate to require (ideally 6TRX). The BS-11 units we have are higher power but all GSM 900 only, for which we cannot get a license from the regulatory authority. The Ericsson RBS2308 are higher power and 4TRX, but they are 1900 MHz :/ Luckily, Dieter has recentl done some work for a university of applied sciences in Bavaria. They have obtained some Nokia Metrosite equipment (from O2 Germany, I believe), and Dieter is helping them with OpenBSC support for it. So just in time, Dieter has managed to get them working _plus_ the university thankfully has agreed to borrow them the two units for the camp. One of them is 2TRX, the other is 3TRX. They have integrated duplexers but no combiners, i.e. we need one Antenna for each TRX. Each of the TRX has 5W output power. I have ordered some nice 140cm long omnidirectional 8dBi gain antennas as well as cable that will only produce 2dB loss over the estimated 10m that we have to cover. The back-haul to the BSC will be classic E1 based. All equipment should be at my place around August 1st. I'm planning to slowly build the network starting from August 3rd onwards. This depends a bit on when we will have electrical power in the shelters where the units are to be located, and when the museum will have the telescope antenna poles ready for us. The license permits us operating from August 3rd onwards, so we can do coverage testing and the like as soon as the BTSs (or even only one of them) is operational. It would be great to know who will be able to give me a hand with the build-up starting from which day/time on. Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)