nRF905 phase noise

[Az-eddine]

Hi ,

can anyone tell me what can cause these disturbances around the unmodulated carrier?

IMG-20171110-WA0017.jpg

We checked all components arround the IC it's all ok.

Can be phase noise ? it depends on the nRF905' VCO?

16 Mhz EXTAL

Many thanks

[Az-eddine]

Hi, my schematic is the same suggested on the nRF905 datasheet.I used it for many years but in theese days I'm having this problem.I checked all components arround it ,nothing strange!! Thanks in advance

Best regards