All I can say is my system works quite well. I actually own and use one, I do not depend just on the web, but actual experience. I have been using it since 2017, now with several generations of drones. Notice even your quote says usually. If it...
You know, I didn't look at the actual coordinates, except on the Garmin. The drone was quite happy flying around the basement area without issues. It showed a strong signal, where there was none before. It was able to stable hover, climb up to...
I am not sure which one you have, but mine, which is a decent unit. I have to use decent gear, I have a Federal license to work on Avionics in aircraft. It works quite well. I had to go out to the hanger today to fetch one of the nav cards to log...
I have a device very similar to this one. It repeats the gps signal inside an enclosed space. I use it for maintenance on my aircraft avionics in hangers. Not very expensive if you want to do indoors flight.
GPS repeater on ebay
I know, the price of any main board is absurd. However, if you have a dead one or a bound one, it could be a bargain. Sometimes buying a complete broken drone is not a bad way to go, you do usually have the issue of it not being unbound. If you...