Re: increasing nRF52 Bluetooth range

Vikrant More <vikrant8051@...>

Hello Vinayak,

    NRF_RADIO->TXPOWER = 0x8;  //+8dBm

    err = bt_enable(bt_ready);
    if (err) {
        printk("Bluetooth init failed (err %d)\n", err);


I modified power to +8 dBM as per your suggestion but didn't find any improvement in the range.
Am I missing something besides this ?

Thank You !!

On Thu, Mar 8, 2018 at 1:57 PM, Chettimada, Vinayak Kariappa <vinayak.kariappa.chettimada@...> wrote:

Hi Vikrant,


The Zephyr BLE controller does not implement the Tx power set interface in the upstream code, hence Zephyr controller operates with +0dBm transmit power.

Feel free to supply the correct h/w Tx Power enumeration to callers of


nRF52840 supports +8dBm and Zephyr controller supports external power amplifiers too using the PA/LNA GPIO lines, in case you want your h/w design to have external chips to get further tx power.





From: [] On Behalf Of Vikrant More
Sent: Thursday, March 08, 2018 7:53 AM
To:;; Cufi, Carles <Carles.Cufi@...>
Subject: [Zephyr-users] increasing nRF52 Bluetooth range



Recently while doing demo test in my office, I found that

range of silicon labs SoC with max. +10dbm power = 2 * range of nRF52 with max. +8 dbm power

Silicon labs demo kit was executing own stack.


Is this because of only +2dbm difference ?

How to increase nRF52 range by configuring Zephyr ?

Thank You !!  


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