How can I increase transmission and reception range

[wolfyy59]

I have 2 gsm antenna I can't go further than 5 mettre s any configuration must be changed?

[caseyannesen]

range depends on a lot of factors including, line of sight, antennas used, and tx power, are you using the sdr as is or are you adding an amplifier. typicaly check the osmo-bts.conf i think it has a gain setting and tx attenuation setting - set it to a lower number upto 0 for the highest tx power!, then you can also use the ms-max-power red setting in the openbsc.conf the lower the better too