Brazil
There is this unit available from Metta:
https://docs.mettatec.com/radioRTK/
They ship internationally but the power output is 1 watt.
How much of an improvement would that be in real life?
The amplifier helps a lot, I have tried it, and it does improve the working range. But you should always keep in mind that the topography of the site can increase or decrease your range.
It also has the advantage of being used with a powerbank.
2 Likes