Point taken; it's the period of an ATSC 8-VSB data frame, and it's 5x the repetition rate of ATSC M/H sub-frames. It's beginning to look like the A/153 won't be publicly available this year; but one can still hope. John Willkie _____ De: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] En nombre de dan.grimes@xxxxxxxx Enviado el: Thursday, December 04, 2008 11:54 AM Para: opendtv@xxxxxxxxxxxxx Asunto: [opendtv] Re: Two (hopefully tough) trivia questions JW: "967,887,927 nanoseconds is the repetition rate..." I assume you mean "period" and not "rate". ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.