[time-nuts] indoor GPS test

[Ronald Held]

Thanks to all of you who gave me suggestions. For only a test, I would
think only a PC connection plus software would be needed. The ! PPS
output would only be useful if I could use the units as a timing
module, which I do not think is correct for the Garmins I have been
looking at?
                               Ronald

---------- Forwarded message ----------
From: time-nuts-request at febo.com <time-nuts-request at febo.com>
Date: Jan 25, 2008 8:48 AM
Subject: time-nuts Digest, Vol 42, Issue 62
To: time-nuts at febo.com


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Today's Topics:

  1. Re: indoor GPS test. (WB6BNQ)
  2. Generation of very stable 10.001MHz for heterodyne freq
     measurement (Anders Time)
  3. Re: Generation of very stable 10.001MHz for heterodyne freq
     measurement (John Ackermann N8UR)
  4. Low phase noise digital divider (in 600MHz to10MHz area)
     (Anders Time)
  5. Re: Low phase noise digital divider (in 600MHz to10MHz    area)
     (Didier Juges)
  6. Z3801A performance plots (John Ackermann N8UR)
  7. Re: Generation of very stable 10.001MHz for heterodyne freq
     measurement (Bruce Griffiths)
  8. Re: Z3801A performance plots (Mike Feher)
  9. Re: Z3801A performance plots (Magne M?hre)
10. Re: Low phase noise digital divider (in 600MHz to10MHz area)
     (Bruce Griffiths)


----------------------------------------------------------------------

Message: 1
Date: Fri, 25 Jan 2008 02:43:04 -0800
From: WB6BNQ <wb6bnq at cox.net>
Subject: Re: [time-nuts] indoor GPS test.
To: Discussion of precise time and frequency measurement
       <time-nuts at febo.com>
Message-ID: <4799BD38.DDAD97D0 at cox.net>
Content-Type: text/plain; charset=us-ascii

By the way,

If you do get a Garmin 15, make sure it is the "H" or "L" model which
has WAAS.  The
regular model "15," which is cheaper, does not have WAAS.

Bill....WB6BNQ

WB6BNQ wrote:

> If you go to the Garmin web site and look at their OEM page, you can order the
> OEM versions for around $55 from Garmin directly.  I have one of their models, a
> 15xx OEM module (including the pigtail cable).  It has PPS stated as good to 1us
> but I was told it was actually good to 100ns with SA turned off.  It is not
> designed to be a "timing" receiver, but will get you in the ball park for a cheap
> price.  You will still need to get an antenna of some sort, supply power and use
> software in a PC to setup and control the unit.
>
> I purchased the Garmin 15 to use in my car, as my main GPS unit developed a
> failure.  I was using my main unit to drive my laptop software for mapping
> purposes.  The Garmin 15 will replace it.
>
> Bill....WB6BNQ
>
> Hal Murray wrote:
>
> > > The GPS 18 from Garmin is ~130 list, since ti comes with some software
> > > for a laptop.
> >
> > You want the GPC 18 LVC rather than any of the other versions.  (It's the
> > only one with PPS.)
> >
> > You can get it for well under $100.  Look for the OEM version.  (aka no
> > software)
> >
> > I got mine from Provantage.
> >   http://www.provantage.com/garmin-010-00321-56~7GRMN039.htm
> >
> > --
> > These are my opinions, not necessarily my employer's.  I hate spam.
> >
> > _______________________________________________
>