Why my nrf sniffer only capture the 37 38 39？

[flywithme]

i use the hex

sniffer_pca10056_129d2b3.hex

the packet is

nrf_sniffer_for_bluetooth_le_3.0.0_129d2b3.zip

my board is nrf52840- dk

but the wireshark only capture the packet on 37 38 39?

why?

no bonding

just le connect.

could you tell

[Turbo J]

Those are the 3 advertizing channels in the BT LE specs. Advertisements and connection requests will only appear on these channels.

Other channels will only be captured following a user interaction, i.e. selecting a specific device.

[flywithme]

why？ do you mean my hardware nrf52840-dk  couldn't capture the packet on the data channel (except 37 38 39)?

what's your mean specific device?like ?