With a clear view of the sky, pretty much any receiver but the lowest grade
(havIng a 1pps output) should behave about the same. Ceramic patch antennas
should have a decent ground plane. If the antenna is small (e.g. most puck
antenna/receivers) put in on a 10in or 12in round metal disk (also blocks
low-elevation reflected signals).
Getting a lot better may involve considerable testing and characterization
(i.e. $$'s), including site survey (line of sight obstacles, sources of
multipath...), propagation/group delay in antenna/rf system, hardware involved
in generating 1pps (slew rates...), sw tracking loop stability under various
conditions (low signal level, addIng or dropping a satellite from the loop,
...).
Dale
Sent on the TELUS Mobility network with BlackBerry
-Original Message-
From: na...@mips.inka.de (Christian Weisgerber)
Date: Sun, 31 Jan 2010 21:29:23
To: freebsd-questions@freebsd.org
Subject: Re: Re : Recommendation on GPS time source for FreeBSD
Alexandre L. axel...@ymail.com wrote:
You can see here : http://www.meinberg.de/english/
Meinberg is one of those companies that don't even put price
information on the web site: If you have to ask, you can't afford
it.
--
Christian naddy Weisgerber na...@mips.inka.de
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