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LoRa range experiments Urban test

Yesterday and some days before I did some experiments in testing the LoRa radio modules I have from microchip.
The modules were connected to some laptops over USB serial.
I wrote some python scripts to send data using the pyserial library.
One laptop was sitting on a table indoors, no real antenna, just a piece of wire.
The other laptop was outdoors, walking around, no real antenna, just a piece of wire.
The spreading factor for LoRa was SF12, power was set to high.
Further details available on request. (email me)

This experiment was very successful, about 1 kilometer, good connection, no loss of data.

In the picture above, Richard is holding the laptop and the RF module, we are about a kilometer away from TX and get perfect data, on the overpass above the A2 road.

But when we got between a lot of buildings, the results were not that good. At 700 meter we lost connection. 500 meter was mostly fine.

In Tilburg an experiment was done.. and 500 meter urban was not a problem.

So far I am very impressed by the performance of these low cost low power modules.
Compared to commonly used FSK moduled modules in the same frequency-band the range is certainly more than double.. Also the fact that the modules implement a LoRa protocol and handle all the CRC and duty-cycle stuff (and even more) makes it easy to use them.


Unknown zei…
i have a question sir,i couldn't find a way to get the RSSI from the RN2483 chip in order to make some tests ,do you have any idea how the get it

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