Low RSSI Fanstel BC833M vs PCA10100

RE: Low RSSI Fanstel BC833M vs PCA10100

qwertynoon — Mon, 26 Jul 2021 20:09:59 GMT

Thanks

So now I can make a conclusion - Fanstel made lowcost but useless NRF module, because the same firmware in original Nordic DevKit shoot radio like a gun

RE: Low RSSI Fanstel BC833M vs PCA10100

Stian Røed Hafskjold — Mon, 26 Jul 2021 19:29:51 GMT

Feel free to erase the UICR, it should not have any impact on radio performance.

RE: Low RSSI Fanstel BC833M vs PCA10100

qwertynoon — Mon, 26 Jul 2021 04:20:45 GMT

But what if I erased this UICR data? Will this be an obstacle to the normal operation of the radio at maximum power?

RE: Low RSSI Fanstel BC833M vs PCA10100

qwertynoon — Thu, 15 Jul 2021 12:16:32 GMT

Antenna connected to ground in fanstel module. F invert antenna. No ground. I have tried even without pcb (wiring only) but it has the same result -60db at 2 meters

RE: Low RSSI Fanstel BC833M vs PCA10100

Stian Røed Hafskjold — Thu, 15 Jul 2021 12:08:58 GMT

The default UICR values are fine, no need to change anything in there. Usually you have to place the antenna outside of the PCB or at least make sure that there is no ground plane underneath.

RE: Low RSSI Fanstel BC833M vs PCA10100

qwertynoon — Thu, 15 Jul 2021 11:46:34 GMT

I have asked them. They lold they have good communication. But it is a terrible. Up to 25 db difference between fanstel and pca10100. Maybe somthing wrong with UICR bytes? I have erase all chip

RE: Low RSSI Fanstel BC833M vs PCA10100

Stian Røed Hafskjold — Thu, 15 Jul 2021 11:39:55 GMT

Did you follow the reference design for the BCM833M module? If possible can you please post the board layout? Thanks.

If you followed the BCM833M reference design and all other guidelines, I think you will have to direct the question to Fanstel.