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Harald Welte laforge at gnumonks.orgHi Carlos, On Sat, Mar 10, 2012 at 08:06:05PM -0300, Carlos Cecanecchia Neto wrote: > We are working in a project that uses a GSM modem to send a GMSK > beacom in 904 MHZ with 2W. Is this an free software / open source / open hardware project? > Visiting you site, we found a GSM RSSI software working in a phone. > Can we use it in 904 Mhz ? This is the uplink GSM ARFCN channel 70. > It is possible ? Yes, in general this is possible. You will have to remove the receive filter of the phone, as it is described in http://bb.osmocom.org/trac/wiki/Hardware/FilterReplacement and replace it with soem baluns. Please also note that the measurements at the moment are completely uncalibrated. If you need precision, I would suggest to calibrate each phone individually. -- - Harald Welte <laforge at gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)