Hi 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.