A few weeks ago we attempted a Line of Sight (LoS) range test for our LoRa transmitters and receivers but we soon ran out of LoS range (see https://www.mesh-net.co.uk/lora-range-tests/).

As it is difficult to find several kilometers of LoS in London, we headed to the hills of Czech 🙂 with a plan.

The plan being we hoist our transmitters on top of Oblík hill and drive away to see how far we could get.

On your marks, get set… GO!

LoS = 2 Kilometers LoRa Range Test

We started our test with a LoS of approximately 2 kilometers. Both of our 169Mhz and 869Mhz LoRa transmitters worked just fine.

We also used the reference Semtech development kit (see above) to compare our LoRa devices with.

Time to venture further away… 🙂

LoS = 4 Kilometers LoRa Range Test

Next stop – line of sight of approximately 4 kilometers. Both of our 169Mhz and 869Mhz LoRa transmitters worked just fine with no packet loss.

Drive on… 🙂

LoS = 6 Kilometers LoRa Range Test

Next stop – line of sight of approximately 6 kilometers. Once again, both of our 169Mhz and 869Mhz LoRa transmitters worked just fine with no packet loss.

That hill is getting smaller – Time to go further away… 🙂

LoS = 8.6 Kilometers LoRa Range Test

At 8.6 Km ( 5.3 miles) we were thinking that we would get some packet loss but all our test packets were coming through just fine on both 169Mhz and 869Mhz radio frequencies.

That hill is getting really small now – Drive on… 🙂

LoS = 12.22 Kilometers LoRa Range Test

At 12.22 Km (7.5 miles) we were thinking that now for sure we would get some packet loss but once again all our test packets were coming through for both 169Mhz and 869Mhz. Wow that is some amazing modulation going on to get such a distance with such a low powered radio.

That hill is tiny – can you see it? – Shall we continue driving further away? Of course! 🙂

LoS = 15 Kilometers LoRa Range Test

At 15Km (almost 10 miles), we thought we should definitely get signal degradation but to our amazement, both radio frequencies worked superbly. Totally blown away by LoRa performance 🙂

That hill is so far – 15Km far! Unfortunately we could not drive further away as we ran out of range time 🙂

If you would like more technical information on our range tests and our LoRaWAN development, please get in touch with us.

Thank you!

Special thanks to our team out in the Czech who performed these range tests. 🙂