Split a wide-band capture per ARFCN

multirtl | hackrf-sox & channelize | hopping

here we go already

grgsm_channelize -s 2e6 -f $center -i $arfcn.hop.hrf.sox 23 26
grgsm_channelize -s 12e6 -f $center -i $arfcn.hop.hrf.sox 673 725

check that the main channel has broadcast control content

grgsm_decode --arfcn=673 --mode=BCCH --timeslot=0 --cfile=tele2hop.hrf/out_673.cfile
#gsm_a.dtap.msg_rr_type==0x3f

you are now ready to proceed with hopping


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