Review for "UM980 RTK GNSS USB Dongle with SMA antenna"

UM980 RTK GNSS USB Dongle with SMA antenna
UM980 RTK GNSS USB Dongle with SMA antenna

UM980 All-frequency High Precision GNSS USB Dongle with SMA antenna connector. This product comes with 1 years worldwide warranty

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(4/5) 
By Matej on 31/01/2025 UM980 RTK GNSS USB Dongle with SMA antenna 0 of 0 people found the following review helpful
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Total Rating: 0 1 2 3 4

At first I planned to order some generic UM980 board with 2x 4 pin connectors and connect viac usb interface to my RPI. But then I found this device with integrated USB port. I was looking for boards with 50 Hz pull rate (not 20 Hz). It seems it works fine, but only today I realized there is * in the specs Data update rate 50 Hz *.
So what is the actual update rate ? 20 Hz ? This is misleading. Its like claim: Here is Ford car with Porsche motor inside (if you upgrade it somehow).
So can I upgrade firmware on this device without sacrifice of any featurea ? I plan to use it primarily asi Onocoy station.

Thanks


Shop owner reply (02/02/2025):
Dear Matej

> Its like a claim: Here is a Ford car with a Porsche motor inside (if you upgrade it somehow).
This is a fighter with variable sweep wings. If you want it fast, the wings are pressed. If you want it to be maneuverable, they are released, but it won't be fast.

> So what is the actual update rate? 20 Hz?
A full 50 Hz (not only measurements, but also PVT) are available starting with firmware UM980_R4.10Build17548 from December 2024. But only in CONFIG SIGNALGROUP 8, that is, with a limited set of signals. In other SIGNALGROUPs - only 20 Hz.

> So can I upgrade firmware on this device without sacrificing any feature?
YES. Write to info@gnss.store indicating the order number - I will send you the firmware. The manufacturer forbids us to post it on the website.

> I plan to use it primarily as Onocoy station.
Then you need to use SIGNALGROUP 2, it gives more signals. But it only has 20 Hz.

P.S. We have an M21 RTK/INS receiver. It has 2 Hz on RTK, but 100 Hz from INS. If you have a car, it will work. If you have a flying drone, there is no profile for drones yet. But the manufacturer promises.
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