On 8/20/07, rbethman <rbethman at comcast.net> wrote: > That would depend. > > Now a 32S3A would have neither. > > So it *really* gets down to WHAT *specific* Model one is talking about. I dunno, Bob....hints like WWV, CHU, zero-beating against a known source. But then, the 32S-3 is a transmitter, too. :D ~ Todd, KA1KAQ