Excellent job, I’ve dug into your lib, and it is a really good job.
I plan to use it in an extensive mesh network with around 40 nodes.
During my tests with E220-900T22D in an open area, I could reach only a 924m distance using 5dbi antennas. This with 22db, 2.4kbps, 200bytes pack len.
Have you ever run any distance tests with this module?
It’s important to use the correct antenna (for the relative frequency) and to power the device with a stable 5v with good amperage.
I ask to another use that use the devices in a agriculture product how he manage the device to get the maximum distance.
You are right, good clean power is really a demand for those modules;
I did a second test in a rural area, reaching 1750m.
I’ve forgotten to mention… I’m using 915MHZ.
In the urban area, 915 may be a problem with some cell phone towers, some operators use 915.
Still, 1750m is way less than Ebyte claims to reach. In the datasheet, they mention 5km with a 5dbi antenna.
Good to raise this thread so other users can share their finds.
I will conduct the 3rd test with both ends using 12DBi antennas.
Let you know the results.
I ask to the people that use e32 for a production project.
They say that to raise best performance more than 8km that is the limit of e32) they use a 12dbi antenna positioned ad 4 meter high to the receiver and 8dbi antenna to the sender at 1 or 2 meter height.
They have 868mhz device, and if the use 915mhz antenna the distance is reduced by half (problem start from 4km).
So I think you must consider:
– good voltage and amperage;
– correct antenna (mhz and dbi);
– put the antenna very high;
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