All the GPS receivers that I have tested get the time message out within a
second (either before or after depending upon the model) of the 1PPS pulse...
except the Jupiter receivers. For those, the last byte of the time messages
arrives 1.25 seconds after the 1PPS pulse. This might cause som
> Sent: January 26, 2018 3:00 PM
> To: time-nuts@febo.com
> Subject: [time-nuts] Suggestion for a timing GPS receiver (Trimble / Ublox /
> other?)
>
> The Trimble ... it is a newer design.. The Oncore is getting rather long in
> the tooth and some have GPS week rollover i
Mark Sims
Sent: January 26, 2018 3:00 PM
To: time-nuts@febo.com
Subject: [time-nuts] Suggestion for a timing GPS receiver (Trimble / Ublox /
other?)
The Trimble ... it is a newer design.. The Oncore is getting rather long in
the tooth and some have GPS week rollover issues. The Trimble has a
The Trimble ... it is a newer design.. The Oncore is getting rather long in
the tooth and some have GPS week rollover issues. The Trimble has a higher
clock rate and less 1PPS jitter.
> Which would be the preference as timing receiver Motorola Oncore or a Trimble
> Resoluti
;
>
> -=Bryan=-
>
>
>
> From: time-nuts on behalf of Pete Stephenson
>
> Sent: January 26, 2018 12:48 PM
> To: Paride Legovini; Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Suggestion for a timing GPS receiver (Trimble /
Subject: Re: [time-nuts] Suggestion for a timing GPS receiver (Trimble / Ublox
/ other?)
On 1/22/2018 4:38 PM, Paride Legovini via time-nuts wrote:
> Dear fellow nuts,
>
> I plan to build a decent GPS/GNSS-based Stratum 1 NTP server, and I'm
> looking for a good and possibly affo
On 1/22/2018 4:38 PM, Paride Legovini via time-nuts wrote:
> Dear fellow nuts,
>
> I plan to build a decent GPS/GNSS-based Stratum 1 NTP server, and I'm
> looking for a good and possibly affordable timing GPS receiver.
As others have pointed out, NTP over the internet isn't usually more
accurate
On Tue, 23 Jan 2018 13:33:08 -0500
ewkehren via time-nuts wrote:
> The cheapest is not a 5T there are many 6 and 7 for $ 10. T gives you
> nothing unless you have saw tooth correction
It also gives additional performance when your skyview is very bad.
If you see only a small portion of the sky
Hi
The T software does support locked position. If your antenna location is so bad
that this is of any use …. move the antenna. I can get full coverage with a
modern
uBlox from a chair in the family room.
A bit more information: If you are in an “urban canyon” (or maybe a real
canyon)
then i
time-nuts@febo.com said:
> The cheapest is not a 5T there are many 6 and 7 for $ 10. T gives you
> nothing unless you have saw tooth correctionBerrt Kehren
Does the T firmware also support known-position mode where it can operate on
only one satellite?
--
These are my opinions. I hate spam
: Re: [time-nuts] Suggestion for a timing GPS
receiver (Trimble /
Ublox /other?)
On 2018-01-23 08:11, David J Taylor via time-nuts wrote:
> Dear fellow nuts,
>
> I plan to build a decent GPS/GNSS-based Stratum 1 NTP server, and I'm
> looking for a good and possibly affo
On 2018-01-23 08:11, David J Taylor via time-nuts wrote:
> Dear fellow nuts,
>
> I plan to build a decent GPS/GNSS-based Stratum 1 NTP server, and I'm
> looking for a good and possibly affordable timing GPS receiver.
> []
> Am I overlooking something or missing interesting options?
>
> Cheers,
>
Dear fellow nuts,
I plan to build a decent GPS/GNSS-based Stratum 1 NTP server, and I'm
looking for a good and possibly affordable timing GPS receiver.
[]
Am I overlooking something or missing interesting options?
Cheers,
Paride IZ3SUS
Paride,
As M
Paride Legovini via time-nuts writes:
> I plan to build a decent GPS/GNSS-based Stratum 1 NTP server, and I'm
> looking for a good and possibly affordable timing GPS receiver.
Unless you plan to use the timing receiver for some other function, it
really is overkill for the purpose of setting up an
Yo Paride!
On Mon, 22 Jan 2018 16:38:01 +0100
Paride Legovini via time-nuts wrote:
> I plan to build a decent GPS/GNSS-based Stratum 1 NTP server, and I'm
> looking for a good and possibly affordable timing GPS receiver.
Before you bother looking at any GPS, you need to look at your server.
Ha
I put my layout for a GPS RS-232 level converter board up on OSHPARK's shared
projects. It has places for mounting the Trimble Res-T, the Adafruit Ultimate
GPS, and the CN06 (Ublox 6M). The RS-232 circuit has a selectable polarity
1PPS ouput. You can use a3.3V or 5V regulator or there is a j
On Mon, 22 Jan 2018 16:38:01 +0100
Paride Legovini via time-nuts wrote:
> I plan to build a decent GPS/GNSS-based Stratum 1 NTP server, and I'm
> looking for a good and possibly affordable timing GPS receiver.
>
> As far as I can tell there are a few common options. One is the Trimble
> Resoluti
Hi
It is doubtful that the pc board has an RS-232 to TTL converter onboard. The
module it’s self
“talks” TTL levels rather than RS-232 levels. RS-232 to TTL adapters are dirt
cheap and easy
to find on eBay. Make sure you get one that has control lines along with the
basic RX and TX
functions. (
Why not consider a more recent current UBlox module?
e.g. the M8T https://www.u-blox.com/en/product/neolea-m8t-series
A quick internet search will find several suppliers of ready made
boards/modules...
On 22/01/2018 15:38, Paride Legovini via time-nuts wrote:
> Dear fellow nuts,
>
> I plan to
Paride
The LEA-5T differs from other devices only that it has saw tooth information
that can be used for correction or in a loop' I did a board and have one with
variable delay using the 5T. Looking at the picture I do not even see an output
for that information. Any later standard $10 module wi
Dear fellow nuts,
I plan to build a decent GPS/GNSS-based Stratum 1 NTP server, and I'm
looking for a good and possibly affordable timing GPS receiver.
As far as I can tell there are a few common options. One is the Trimble
Resolution T (or SMT), that should be good and proven. The major
annoyanc
21 matches
Mail list logo
