nRF52833 DK external antenna

[ian_student]

Hi

I am currently trying to get the antenna switching working on the nRF52833 DK

I have an SPDT RF swtich is this pe42423

VDD -> VDD

LS -> P0.26

CTRL -> GND

GND -> GND

J1 RFC -> J1 ANT

I would like to ask a few questions

1. will the included PCB antenna be switched off automatically when plugging in an external antenna？

2. How should I detect that I have sent and received signals through the external antenna？

Thanks.

[ketiljo]

1. Yes. when you insert the SWF connector, you will break the connection to the PCB antenna and route the signal to the cable. 

2. If you have access to a spectrum analyzer, you can measure the TX power on the antenna port. Else, you will see that the range drops if you disconnect the antenna.

[ian_student]

Also I can only receive through one antenna,

How to use two antennas? i want to operate as the locator unit(RX)

https://infocenter.nordicsemi.com/pdf/nwp_036.pdf

check 4 Antenna switching configuration ?

Currently learning Thank you very much!