Radio test configuration nrf21540DK

Question

Hi JONATHAN LL 
 I am using nrf21540DK, NCS version 2.3.0 , Radio Test example, RSSI Viewer as a Scanner, and VSCODE studio as an IDE. 
 I just come to know that. do not support the nrf21540DK configuration. I tested its RSSI and got -23dm @0 to 4 dbm input from nrf52840. 
 To confirm the communication between nrf21540 and nrf52840, I used an oscilloscope to monitor the SPI signals on P1.13, 14, and 15. But I got no signal. 
 After that when I loaded the supported "Direct test mode " example I got the pulses on these pins. 
 Can you please help me in this regard that how to make it work with the "Radio test" example?

Above picture is when i tested it with Direct test mode.But no signals in case of radio test example.

Can you please help me in this regard? I tested my custom (nrf52833+nrf21540) board as well .And i faced the same issue with that as well. 
 
 Thanks & regards, 
 Muhammad Usman

JONATHAN LL · Accepted Answer

If there are only questions about the design and layout and you do not mind sharing that info with others then a public ticket is fine. Otherwise a privet ticket is best, if there is any need to share shipping details or other sensitive info that you don't want the rest of the world to know about. You create the ticket, then name it something along the lines of "HW review request, nRFXXX" add all the relevant info, like schematic and layout files, so that would be the schematic as PDF. For the layout its best to share the GERBER files but a pdf is also fine. If you are using Altium to design the we can use that as well so the PCB and SCH file will do. Include description of where and how it will be used and if there are any batteries or similar items then pleas also share where they will be placed. Regards, Jonathan

Radio test configuration nrf21540DK

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