Hi Konrad, On Sun, Jun 05, 2011 at 08:45:09PM +0200, Konrad Meier wrote: This is great news. I would be more than happy to accept the offfer, if the Motorola BTS idea doesn't work out. I already have another company that would be able to give us 3 or 4 other booster kits (lna+pa+duplexer+filter) for nanoBTS 1800. 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)

Hi Konrad, On Sun, Jun 05, 2011 at 08:45:09PM +0200, Konrad Meier wrote: As it turns out, I have not yet managed to get the Motorola BTSs working, despite putting lots of time into it. There are many reasons, but basically the Motorola BSS is _extremely_ different from normal GSM BSS So while I might still get it to work, I doubt it, and it would be better to pursue different plans now. We can certainly bring together a sufficient number of nanoBTS units to fill all our ARFCN. The problem now is the coverage <-> capacity problem, i.e. I don't want 6 BTSs with small coverage area, but rather something like 2 or 3 sites (max) with each 2 or 3 BTSs. Have you meanwhile tested your splitter/combiner/booster setup? does it work? What I can really easily re-use from the Motorola BTS are 2x hybrid combiner/duplexer units, i.e. something that has the following ports: * 1 antenna output, bidirectional, 7/16" socket * 2 PA Tx inputs, SMA * 1 Rx antenna output, N-type So if you don't have a similar setup, we could use those together with two nanoBTS with a Rx LNA and a Rx splitter. I have six of those hybrid combiner/duplexers. I _might_ also get the Rx LNA + splitter of the Motorola BTSs to work, but those are less stand-alone and I'm not certain about it. What do you have in terms of antennas? Also, when would you be able to provide the equipment to me? I would want to put everything together + test it well ahead of the camp, probably around August 1st. Does anyone else on this list have any 1800 MHz PA, Mixer, Duplexer, etc. that he would be able to borrow for the Camp GSM network? Regards, Harald -- - Harald Welte &lt;laforge(a)gnumonks.org&gt; http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

Hi Konrad, On Mon, Jul 18, 2011 at 04:22:19PM +0200, Konrad Meier wrote: no problem. I have plenty of multi-trx setup experience, I doubt we would have any problem setting that part up at the camp. unfortnately this url fails to load: [2] http://lab.ks.uni-freiburg.de/attachments/download/260/setup.png I can ping the server, and I can connect to port 80, but it never responds to a GET request. Sylvain seems to have built some uplink LNAs. Ok. I have just ordered a couple of 1.4m long 8dBi gain omni antennas, just in case. I also ordered 50m low-loss cable (20dB on 100m) and 20 matching N plugs. A 500m roll of CAT6 cable for the abis/ip back-haul is here already thanks in advance. -- - Harald Welte &lt;laforge(a)gnumonks.org&gt; http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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 &lt;laforge(a)gnumonks.org&gt; http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

Hi Sylvain, On Sat, Jul 23, 2011 at 12:09:55AM +0200, Sylvain Munaut wrote: ok. don't worry. Peter is in Berlin and is available to help even from the 3rd onwards. Depending on factors like power, pole availability, ... we might even delay the start to the 5th. I think our biggest challenges will not really be GSM related but mechanical, like cabling, plugs, safely putting the units to the side of the shelters, mechanically mounting the antennas, etc. Also, as we don't use any external LNA, PA, Duplexer, Combiner, the setup is extremely simple on the RF side, too... I think there will be quite a bit of operations + maintenance and possibly bugfixing during the camp... -- - Harald Welte &lt;laforge(a)gnumonks.org&gt; http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

Hi all, this is hopefully the last and final update before the Camp. I'm happy that we now have the license and all the equipment required. Please check http://openbsc.osmocom.org/trac/wiki/CCC_Camp_2011 for the current plan. Special thanks to Dieter Spaar for his effort to support the Nokia Metrosite in OpenBSC on very short advance notice. (More thanks on http://events.ccc.de/camp/2011/wiki/GSM) Regards, Harald -- - Harald Welte &lt;laforge(a)gnumonks.org&gt; http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)