Hi everybody;
I just got a Motorola Oncore+ GPS receiver for use with a disciplined
Frequency standard I'm building and was wondering if anyone could tell me
if it will be useful for this purpose.
The part number is R5122U1154. I know it's a bit late to ask this
question after the purchase but I
Consider a television tripod and mast to elevate the GPS antenna above
the roof...
Jack Hudler wrote:
> I use a Fiber Optic Antenna Link FOL-100 from Truetime. However, I don't
> know of anything else out there does something similar.
>
> -Original Message-
> From: [EMAIL PROTECTED] [mai
I use a Fiber Optic Antenna Link FOL-100 from Truetime. However, I don't
know of anything else out there does something similar.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Matthew Smith
Sent: Tuesday, March 04, 2008 3:36 AM
To: Discussion of precise
On Fri, Feb 29, 2008 at 5:15 AM, Bruce Lanning <[EMAIL PROTECTED]> wrote:
> My Trimble ACE-III Has been tracking PRN32. Works AOK.
> Bruce
Just fired it up a little while ago, but the FastraX itrax03 (based on
the uNav uN2110) also tracks PRN32.
CK
--
GDB has a 'break' feature; why doesn't it
Brooke Clarke wrote:
> Hi Bruce:
>
> Yes.
>
> There was a prior thread about using X band offset parabolic TV
> antennas with a stock GPS antenna. The idea being to aim the beam at
> a WAAS GPS satellite. I heard it worked well even though cross pol
> should have made for poor results.
>
> How
Brooke Clarke wrote:
> Hi Matthew:
>
> Some antennas are receptive to signals coming up from below.
>
> Since the signal is circularly polarized the first reflection is supposed to
> be
> down something like 20 dB, but the second reflection will be much stronger,
> so
> you would also need to l
- Original Message -
From: "Bruce Griffiths" <[EMAIL PROTECTED]>
To: "Discussion of precise time and frequency measurement"
Sent: Tuesday, March 04, 2008 9:23 AM
Subject: Re: [time-nuts] Mounting GPS Antenna on Steel Roof
> Also at least some of the magnetic base antennae are intende
My experience is that when severe multipath occurs, even when short distances
are involved, the GPS receiver seems to get utterly confused and won't provide
a solution.
When I had my GPS antenna only about 2 feet away (above and to the side) from
the top of a signal generator on the top of a c
I hope we aren't running Matthew around in circles here for nothing.
Multipath in a GPS situation is a problem where the differences in path
length are significant relative to the time accuracy desired. If you are
trying to make a measurement on a city sidewalk with large reflective
objects above
Matthew,
You mentioned Time Server..is this your only GPS or do you have other more
accurate timing requirements? Unless you are working on nanosecond type
accuracy, I don't see that mounting your antenna on the metal roof is going
to cause you any practical problems. If all you are interested in
- Original Message -
From: "Eamon Skelton" <[EMAIL PROTECTED]>
To: "Discussion of precise time and frequency measurement"
Sent: Monday, March 03, 2008 9:50 PM
Subject: Re: [time-nuts] WTB: 10, 20, 40 or 50MHz oscillator
> David Hilton-Jones wrote:
>> Does anybody (preferably in the UK
Quoth Rob Kimberley at 2008-03-04 19:29...
> Height of antenna is not important, but being clear of obstructions and
> large metallic objects are. Can you mount it on a pole at the end of the
> garden?
I can, but the end of the garden is some 50 metres from the house, which
brings back my concern
Matthew,
Height of antenna is not important, but being clear of obstructions and
large metallic objects are. Can you mount it on a pole at the end of the
garden? As long as the antenna can see a large chunk of sky you should be
OK. If you have a handheld GPS then check out the best site for maximu
Brooke Clarke wrote:
> Hi Matthew:
>
> Some antennas are receptive to signals coming up from below.
>
> Since the signal is circularly polarized the first reflection is supposed to
> be
> down something like 20 dB, but the second reflection will be much stronger,
> so
> you would also need to l
Hi Matthew:
Some antennas are receptive to signals coming up from below.
Since the signal is circularly polarized the first reflection is supposed to be
down something like 20 dB, but the second reflection will be much stronger, so
you would also need to look at those.
Have Fun,
Brooke Clarke
Matthew Smith wrote:
> Hi Folks
>
> Further to the cable splicing thread, I have been having a discussions
> off-list with Didier regarding the placement of my antennas on the ridge
> cap of my roof.
>
> There is certain concern that I may have issues with reflections - can
> anyone confirm whether
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