You can use the built-in functionality that the transmitter chip si4713 supports to scan for empty freqs using only the transmitter, which is what i tried to do with T-CONTROL. But unfortunately, as i understood, the power kernel does not support that functionality, so it fails and i always get value -1.

If you remove the antenna "fm_rssi" will always give the value of "-122", you cant use E.F.F. without an antenna.

http://www.mjmwired.net/kernel/Docum...nux/si4713.txt
http://maemo.org/api_refs/5.0/5.0-fi.../fmtx_api.html
http://slexy.org/view/s21khty7HB