https://www.youtube.com/watch?v=7cLjFAADM44
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Hello Peter
The aim of our study was to characterise the performance of single
frequency receivers for time-transfer. The F9P was a late addition to our
study and extending our software to dual frequency was too much work at the
time. Having a measured ionosphere was not such a huge improvement
Update: last Friday our students have populated a few prototype boards (
http://www.lartmaker.nl/time-nuts/dmtd-proto.jpg), and this weekend I
managed to get some early code running on it.
The good: Noise performance matches the datasheet (1.19LSB_RMS given,
1.21LSB_RMS measured). The 1/f corner
Hello Anders,
Yes, we used TAPR TICCs do the testing. It’s a very economical solution
for testing multiple receivers in parallel.
The OpenTTP software mktimetx applies sawtooth corrections to the TIC
measurements, as you guessed. The corrected TIC measurements are combined
with the raw GNSS
Hello Hal,
The PPS signal is on pin #3 - on the lower right in the picture - you'll
see the LED and the resistor - you should be able to pick off the PPS
signal from there.
73's,
John
AJ6BC
On Sat, Sep 21, 2019 at 5:00 PM Hal Murray wrote:
>
> j...@westmorelandengineering.com said:
> > Just
From: Hal Murray
Just saw this at All-Electronics - thought some here could be interested:
https://www.allelectronics.com/item/gps-8m/gps-module/1.html
No obvious PPS connection.
There may be a PPS LED where you could pick it up, but I don't see any
documentation.
Looking closer at the picture provided at that link, it appears that pin 3
(TIMEPULSE) is broken out to a resistor and LED (toward the bottom right
mounting hole). Probably still best to ask though.
> On Sep 21, 2019, at 6:20 PM, Hal Murray wrote:
>
>
> j...@westmorelandengineering.com said:
Hi all,
I have the following modules from a HP 5061A cesium standard available free
for the cost of shipping from Melbourne, Australia
A1 Synthesizer
A3 Multiplier
A8 Phase detector
A9 Operational amplifier (the one with the brick module in it)
A13 Buffer amplifier
A15 Power regulator PCB
Hi Michael, thanks for the reminder about your slides!
Your page 4 has the two setups. I think you are right in that the F9T
doesn't seem to take an external receiver clock (even if working with the
bare part, not the RCB-board).
(FWIW, AFAIK the not-so-low-cost septentrios use the left external
Bernd, thanks for the excellent treatment on the subject
glen
On 21/09/2019 4:42 PM, Bernd Neubig wrote:
Hi,
There is nothing like a fixed ratio between R1 at 3rd or 5th overtone the R1
at fundamental mode. The best approach through C1 and Q.
C1 reduces with the square of overtone N (for
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