One difference is that the CC1100 is 0.5mm pitch and the CC1070 is 0.65mm pitch. I made QFN-50P-400W-400L-20N-240WT-240LT__Chipcon for the Chipcon 2500 radio which has a 0.5mm pitch.
> BTW: why don't you use /usr/share/pcb/m4/qfn.inc macros? Since I am more familar with Perl than m4 I created a Perl library for creating footprints (and sundry PCB and gschem tasks). See http://www.luciani.org/geda/pcb/pcb-perl-library.html for more information. > > Matthias > -- http://www.luciani.org
