A Breakthrough By Iridium® & Satelles — An Alternative To GPS Service
From SatNews Daily:
"For the first time, end users now have access to accurate and resilient
position, navigation and timing (PNT) technology that works anywhere on the
planet, even indoors. "
See:
http://www.satnews.co
Dear Bob,
In case you are looking for replacement, there is clone available for most of
the old Trimble modules (Lassen, IQ, LP) :
http://www.naelcom.com/ds/gps/ds_lassen_clone_series.pdf
Regards,
Luc
-Message d'origine-
De : time-nuts [mailto:time-nuts-boun...@febo.com] De la
On 30 May 2016 17:01, "Richard (Rick) Karlquist"
wrote:
>
> On 5/30/2016 4:06 AM, Dr. David Kirkby (Kirkby Microwave Ltd) wrote:
>> I'm wondering what's the best way to generate 116 MHz with very low phase
>> noise. Phase noise at < 20 kHz offset is particularly important, but 200
>
> The "best"
Hi
> On May 31, 2016, at 6:30 AM, Dr. David Kirkby (Kirkby Microwave Ltd)
> wrote:
>
> On 30 May 2016 17:01, "Richard (Rick) Karlquist"
> wrote:
>>
>> On 5/30/2016 4:06 AM, Dr. David Kirkby (Kirkby Microwave Ltd) wrote:
>
>>> I'm wondering what's the best way to generate 116 MHz with very l
On 5/31/2016 3:30 AM, Dr. David Kirkby (Kirkby Microwave Ltd) wrote:
Please excuse my ignorance, but how would one lock a 116 MHz 5th overtone
crystal oscillator to 10 MHz with no difficulty? Do you have a circuit you
share that would give low phase noise, and if so how low?
If you extract
Back in the spring of 2012 an article was published in VHF Communications
entitled "A Phase Meter: a help to synchronize oscillator's to GPSDO". In
it the authors indicated that they hoped to add a "rotation counter" perhaps
using Arduino.Does anyone know whether further work was done on this?
Bob Camp:
> In many DMTD (and single mixer) systems, a lowpass and high pass filter are
> applied to the signal coming out of the mixer.
> This is done to improve the zero crossing detection. It also effectively
> reduces the “pre detection” bandwidth. My understanding
> of the setup in your pap
On Wed, 25 May 2016 16:01:51 +
"Sherman, Jeffrey A. (Fed)" wrote:
> We found that in the studied units the limiting non-stationary noise
> source was likely the aperture jitter of the ADC (the instability of the
> delay between an idealized sample trigger and actuation of the sample/hold
> ci
I had two machines running Lady Heather with the singing chime clock mode
enabled (that plays a chant from the Missa Assumpta on the quarter hours).
One machine was connected to a Ublox Neo-6M receiver and another to a Z3801A.
I noticed that the two machines sang their jaunty monk tunes off
I looked through the complete index of the magazine for any further articles
by the authors but no joy. It's fairly certain that they didn't do a
followup in VHF Communications magazine (it ceased publication in 2013).
The authors were A Daretti, and G Canale. You might search the web for
thos
Yo Mark!
On Wed, 1 Jun 2016 01:20:27 +
Mark Sims wrote:
> Has anybody noticed such behavior with other receivers?
Yup. Quite common when the GPS is confused about the current leap
seconds.
Usually a GPS will download the correct offset withing 30 mins of cold
start.
RGDS
GARY
---
Hi Mark,
What does u-center report for the NEO-6M? Or how about TAC32?
Check the precise alignment of the 1PPS and the NMEA/binary/SCPI message stream.
Since the messages cannot coincide with the 1PPS, firmware has two choices: the
message can describe the time of the previous 1PPS or the time
The receiver is reporting the correct UTC offset and appears to be working
properly... it's just that the time is one second off from what 7 other models
of receivers are reporting...
> Yup. Quite common when the GPS is confused about the current leap seconds.
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