[riot-notifications] [RIOT-OS/RIOT] drivers/mrf24j40 : lower TX power on modules with PA/LNA enabled to s… (#16549)

Francisco notifications at github.com
Tue Jun 15 14:24:46 CEST 2021


> In the MRF24J40MC datasheet :
> 
> > 3.1.1 MRF24J40MC SETTINGS
> > To meet the FCC requirements, the following settings must be observed by the integrator:•  The  MRF24J40MC  transmit  power  setting  shall  not  exceed  18.5  dBm  (RFCON3  0x203<7:3>  =  00101). Refer to Section1.3.4 “Transmit Power Settings”.•  Only  channels  11  through  25  may  be  selected  (RFCON0 0x200).
> 
> So for MRF24J40MC, max TX power should not exceed 18.5dBm and the user shouldn't use channel 26.
> 
> But this is not stated in the MRF24J40MD/ME datasheet (if I didn't miss something). Maybe they forgot to mention this because I noticed this in the FAR.
> 
> So it's very model specific and we can close my PR I think because of this.

I believe there are difference `mrf24j40**` modules, we can add a specific case for your model/

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