Hi, I need some help to understand the ATSC extension of the dvb api. looking into the source I have some questions for understanding (doc doesn't seems to be up to date): 1.) It seems dvb api 3 has been upgraded for ATSC support: FE_ATSC Could we have an ioctl/function call to retrieve current api version or subversion during runtime (checking device pathes is not sufficient). And checking for FE_ATSC: this might only to be set, if there is a proper card/hardware plugged in... 2.) As I understand it, FE_ATSC can support VSB_x and QAM_x modulation. Do I have to crosscheck against FE_CAN_QAM_xxx to distinguish between QAM and VSB? Or is FE_ATSC always VSB_xx modulation? 3.) ATSC frequency is basically given in Hz? Does this also apply for satellites? (compared to QSPK (DVB-S) ) (--> Integer range!) 4.) A question about dvb-api 4. Are there plans to implement a compatibility mode to dvb api 3, so software can be migrated smoothly over time? Tnx for help Rainer
