External Antenna

[KTM]

Hello 

Due to some reasons we need to use external antenna and RF cables.

What is a part number of the antenna that can be connected to the J1 RF Antenna connector?

We tried few options and none fits.

Does anyone has an exact part number?

[ketiljo]

Take a look at https://docs.nordicsemi.com/bundle/ug_nrf52840_dk/page/UG/dk/hw_rf_measure.html