long range in nrf52840

[Delaram_mz]

Hi

I am using nrf52840 boards and by using the coexist program I am able to send and receive messages through mesh while using the ble services.

I followed the instruction in this post to achieve longer range and increased tx_power to 8 dbm.

I tested the program in an indoor environment  but the results weren't satisfying.

with 0dbm and RADIO_MODE_BLE_1MBIT the maximum distance in which the ACK response is received is 6meters.

but with 8dbm and long range modifications the maximum distance is18 meters. 

I know that the long range modification results are highly dependent on the test environment but the range increment is very low and I expected more change in the results.

is there any other way to achieve long range? or maybe any other changes that I should make?

any help is appreciated.

[Joakim Jakobsen]

Hi.

So the thread you referred to is about using CODED PHY in a Mesh network.

Are you using the nRF5 SDK for Mesh or the regular nRF5 SDK?

Br,
Joakim

[Delaram_mz]

thanks for the reply.

I am using a modified version of coexistence example (ble_app_uart_coexist) in the mesh SDK but as you know in order to make the program work properly it has to be copied in the following path:

NRF SDK/examples/ble_peripheral

so to answer your question: I am using both.

but I tried the patch in a simple server-client example which only uses mesh SDK and the results were the same. no big changes.

best regards,

Delaram

[Joakim Jakobsen]

Ok, thanks.

If you are using a co-exist example. Do you want to implement long range for the Mesh network or the BLE part of your device?

 

Delaram_mz said:

but I tried the patch in a simple server-client example which only uses mesh SDK and the results were the same.

 Maybe there's been some changes in the nRF5 SDK for Mesh that breaks this. I'll test it myself and get back to you.

Br,
Joakim

[Delaram_mz]

my priority is to implement long range for the mesh network and after that for the BLE part. just wanted to make sure that this patch is still working for the latest SDKs.

thanks a lot,

Delaram