[time-nuts] Re: What GNSS module to buy for a good time reference?

[Tom Knox]

Hi Erik;
A few ways I would go, add the to a good GNSS Choke-Ring antenna:
https://www.sparkfun.com/products/18774
SparkFun GNSS Timing Breakout - ZED-F9T (Qwiic) - GPS-18774 - SparkFun Electronics<https://www.sparkfun.com/products/18774>
The SparkFun GNSS Timing Breakout offers a unique entry into SparkFun's geospatial catalog featuring the ZED-F9T GNSS receiver from u-blox.
www.sparkfun.com
https://gnss.store/zed-f9t-timing-gnss-modules/166-elt0147.html

https://gnss.store/zed-f9t-timing-gnss-modules/206-ELT0141.html


Cheers;
Tom Knox
SR Test and Measurement Engineer
Phoenix Research
4870 Meredith Way Apt 102
Boulder, Co 80303
Formerly of:
357 Fox Lane
Superior Co 80027
303-554-0307
actast at hotmail.com

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________________________________
From: Erik Kaashoek via time-nuts <time-nuts at lists.febo.com>
Sent: Wednesday, June 21, 2023 8:00 AM
To: time nuts <time-nuts at lists.febo.com>
Cc: Erik Kaashoek <erik at kaashoek.com>
Subject: [time-nuts] What GNSS module to buy for a good time reference?

Any advice on what GNSS module to buy for a, to be build, time/frequency
reference?
What I understood to look for:
- Saw tooth correction info, e.g. a T module
- Dual channel reception to eliminate ionospheric delay errors
- Module on a PCB with USB and antenna connectors for easy integration
Looking at the data sheets the ZED-F9T and NEO-F10T seem to be good
options. Bare modules are difficult to buy.
I can find a complete module with the NEO-F10T for half the price of a
module with a ZED-F9T
Any reason not to buy the NEO-F10T?
Any other suggestions?
Erik.
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