nge on the
boundries. Would not switching satellites account for that?
Bob
- Original Message -
From: "Hal Murray"
To: "Discussion of precise time and frequency measurement"
Sent: Thursday, June 24, 2010 5:40 PM
Subject: Re: [time-nuts] Substitute GPS in a Z3801A
> Is it possible the phase shift is caused by the doppler of the satellite?
Not likely. Everything in this area is explained by the GPS receiver having
a local crystal that isn't locked to a reference.
See Tom's heater experiment:
http://www.leapsecond.com/pages/vp/heater.htm
--
These a
rbenw...@verizon.net said:
> What about the antenna cable length compensation? How much does that
> affect the AVAR?
The software in the GPS board can't measure the length of the antenna cable.
If you don't correct for it, the PPS signal will be off by the speed of light
delay. That's (very
moving the
antenna to the other side of the roof, or across town? Sounds
suspciously like interference.
Bob
- Original Message - From: "Matthew Kaufman" >
To: "Discussion of precise time and frequency measurement" >
Sent: Thursday, June 24, 2010 11:41 AM
Subject:
will
slant the other way. Does any of this sound plausible?
Bob
- Original Message -
From:
To: "Discussion of precise time and frequency measurement"
Sent: Thursday, June 24, 2010 12:02 PM
Subject: Re: [time-nuts] Substitute GPS in a Z3801A
Hi Bob,
Old GPS receive
Thanks for the info and the links!
Bob
- Original Message -
From:
To: "Discussion of precise time and frequency measurement"
Sent: Thursday, June 24, 2010 12:02 PM
Subject: Re: [time-nuts] Substitute GPS in a Z3801A
Hi Bob,
Old GPS receivers had bad resolution with
rement"
Sent: Thursday, June 24, 2010 11:41 AM
Subject: Re: [time-nuts] Substitute GPS in a Z3801A
I now have *two* Z3801A units which misbehave in the following way
(which this thread reminded me of):
The GPS status says it acquires quite a few (5-6) satellites with high
signal strength... th
VAR?
>
> Bob
>
>
> - Original Message -
> From: "Steve Rooke"
> To: "Discussion of precise time and frequency measurement"
>
> Sent: Thursday, June 24, 2010 11:11 AM
> Subject: Re: [time-nuts] Substitute GPS in a Z3801A
>
>
> Sorry to butt
I now have *two* Z3801A units which misbehave in the following way
(which this thread reminded me of):
The GPS status says it acquires quite a few (5-6) satellites with high
signal strength... then after a minute or two, for no apparent reason,
it loses *all* of them simultaneously but immedia
recise time and frequency measurement"
Sent: Thursday, June 24, 2010 11:11 AM
Subject: Re: [time-nuts] Substitute GPS in a Z3801A
Sorry to butt in on this thread but, although you need a number of
birds to get an accurate position, you really only need one to get
timing. If you have a six sat tra
satellite at a time? Maybe I will leave well enough alone.
>
> Bob
>
>
>
> - Original Message - From: "Mike S"
> To: "Discussion of precise time and frequency measurement"
>
> Sent: Thursday, June 24, 2010 9:01 AM
> Subject: Re: [time-
Hi Mike,
> At 10:48 PM 6/23/2010, Robert Benward wrote...
>>Has anyone ever put another GPS in a Z3801A? Will the software
>>accommodate
>>another GPS that tracks say, 12 channels?
>
> Possibly 8 channels. You must use a Motorola Oncore VP. A 6 channel one
> was what HP used. There are mixed repo
ike S"
To: "Discussion of precise time and frequency measurement"
Sent: Thursday, June 24, 2010 9:01 AM
Subject: Re: [time-nuts] Substitute GPS in a Z3801A
At 10:48 PM 6/23/2010, Robert Benward wrote...
Has anyone ever put another GPS in a Z3801A? Will the software
accommodate
anothe
At 10:48 PM 6/23/2010, Robert Benward wrote...
Has anyone ever put another GPS in a Z3801A? Will the software
accommodate
another GPS that tracks say, 12 channels?
Possibly 8 channels. You must use a Motorola Oncore VP. A 6 channel one
was what HP used. There are mixed reports on using an 8
On 06/24/2010 04:48 AM, Robert Benward wrote:
Has anyone ever put another GPS in a Z3801A? Will the software accommodate
another GPS that tracks say, 12 channels?
I very much doubt that the software would handle more than 6 channels
properly. Also, wasn't there a shift in commands when jumpin
Has anyone ever put another GPS in a Z3801A? Will the software accommodate
another GPS that tracks say, 12 channels?
Bob
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