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Mon Apr 27 04:27:16 UTC 2009


1. At one time, Ashtech receiver manuals could be downloaded as PDFs
from Ashtech's website.  Now, some Ashtech receiver manuals appear to
be downloadable from
<ftp://ftp.magellangps.com/Reference%20Stations/EOL/Z12%20Marine%20Ref.%20Sta/Manuals/

 >.
For example, see
<ftp://ftp.magellangps.com/Reference%20Stations/EOL/Z12%20Marine%20Ref.%20Sta/Manuals/USCG_Z12R.PDF

 >,
<ftp://ftp.magellangps.com/Reference%20Stations/EOL/Z12%20Marine%20Ref.%20Sta/Manuals/REFSTA.pdf

 >,
<ftp://ftp.magellangps.com/Reference%20Stations/EOL/Z12%20Marine%20Ref.%20Sta/Manuals/Z%20Family%20Technical%20Reference%20630203-01%20Rev%20C1.pdf

 >,
<ftp://ftp.magellangps.com/Reference%20Stations/EOL/Z12%20Marine%20Ref.%20Sta/Manuals/630203-Supp%20Errata%20to%20Z%20Family%206%20Dec%2002.pdf

 >.

2. GPS receivers require firmware updates in order to keep up with
changes in the GPS signal structure, NAV message content and format,
etc.  The latest update posted at
<ftp://ftp.magellangps.com/Reference%20Stations/EOL/Z12%20Marine%20Ref.%20Sta/Firmware/

 >
is dated July 8, 2003.  You may have to pay for a firmware update.

3. Remember that Ashtech was merged into Magellan long ago (in the
early 1990's IIRC), and that Magellan was merged into Sagem pretty
long ago (circa 1996??).  Little or no support may be available for a
Z-12 now.

4. That said, the Z-12 was an excellent receiver -- the best available
at its time.


-Chuck W1HIS

===========

-John













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