Increase TX power of morse Micro halow to 27dbm

Projects
1

Hi

We have a custom Halow module with Morse Micro MM6108-MF08651-US chip.
By defauly, we are getting in the logs:
tx_max_power_mbm : 2200

Also, the RF explorer shows 20dbm.

How to increase the TX power to 27dbm?
Do we have to change the source code or the firmware binary?

Thanks,

Arti

2

The maximum transmit power of the MM6108-MF08651-US module is 21dBm, or 23dBm with a higher VFEM and appropriate BCF.

If by “custom module” you mean you designed and built a new module with a different FEM around the MM6108 chip, then you would also need a custom BCF.

3

The only MM6108-based module that supports 27dBm at this stage is the Quectel Wi-Fi HaLow FGH100M-H module, see Wi-Fi HaLow FGH100M-H | Quectel.

I’d suggest to get that module if you require 27dBm output power.

4

Hi @Zandr ,

Thank you for the quick response.

We have taken the reference of:

image
image1335×774 104 KB

Can we use the default BCF file provided on the Morse Micro site?
And what is the maximum power with this design?

Thanks,

Arti

5

Given that schematic, your VFEM is 3.3V and your maximum transmit power will be 21dBm.

morse-firmware/bcf/morsemicro/bcf_mf08651_us.bin at main · MorseMicro/morse-firmware · GitHub will be the correct BCF.

6

Thanks for the binary @Zandr @flex84 ,

We are facing one more issue with the STA-AP connection.
The STA takes around 10seconds to connect with the AP.

Please note STA is powered on first and waiting for the AP.
AP powers up and get discovered by the STA only after 5 sec.

I tried to decrease the scan_interval, updated the wpa_supplicant.conf to connect with the AP as fast as possible but still we are observing a delay in connection.

ctrl_interface=/var/run/wpa_supplicant
sae_pwe=1
ap_scan=1
fast_reauth=1
disable_scan_offload=1

network={
ssid=“Test”
scan_ssid=1
key_mgmt=NONE
scan_freq=5180
freq_list=5180
}

Can you suggest us where we can check to reduce the connection delay?

Thanks,
Arti