Phil Rogers <progers@mindspring.com> wrote: >I believe that dbsm values are frequency dependent (most commonly quoted >for C Band) whereas square meters are not. Square meters and dBsm are both frequency-dependent (if they refer to radar cross-section) since they are just different methods of expressing the same quantity. Lee _____________________________________________________________________________ J. Lee Blanton email: blanton@pe.net Temecula, California, USA Tel/Voicemail/FAX: (909) 699-6903 33.519N 117.102W 413m _____________________________________________________________________________