Problem with airprobe

Hi,

I am trying to decode gsm control channel using usrp+gnuradio+airprobe.
I get the cfile using ./gsm_scan.py -re -d164 -c643 -pe . But when i try
to decode this cfile, I get a file which is not properly decoded. I am
uploading part of the decoded file as I am not sure what the error is.

Instead when I decode wget
​https://svn.berlin.ccc.de/projects/airprobe/raw-attachment/wiki/DeModulation/capture_941.8M_112.cfile
cfile, I get proper decoded file and output on wireshark.

Another small doubt is that when I run the ./gsm_scan.py -re -d164 -c643
-pe command, I do not get the sync initially, but when I change the
frequency up or down and come back to the c643 I get sync.

Please help

Ajay

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