Russell McMahon <apptech@PARADISE.Spammers.Are.Scum.NET.NZ> wrote;
> > >Build your own PIC controlled GPS freq std.Brooks Shera W5OJM, > >QST
>July 1998 page 37 (how's that for an encyclopaedic memory?)
> > >(thanks Google). The original seems to have vanished but > >Google's
>cache of it is here
> > >
> > >    http://www.realhamradio.com/GPS_Frequency_Standard.htm
> > >    http://www.rt66.com/~shera/index_fs.htm
> > >    http://www.rt66.com/~shera/QST_GPS.pdf
> > >
> >
> > Wait a minute. How does the Shera thing compare to an HP Z3801A ?
>
>Not as good.
>The HP has a superbly stable oscillator to start with which a home built
>unit of the complexity of Brooks' unit can only aim for. That said, there
>are liable to be few amateur applications where the difference would be
>noticed.

Actually no, it seems that Shera's thing must be better. I bet there is
considerable confusion about this. See;
http://www.jrmiller.demon.co.uk/projects/freqstd/frqstd.htm



_________________________________________________________________
Tired of spam? Get advanced junk mail protection with MSN 8.
http://join.msn.com/?page=features/junkmail

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.