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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