https://devzone.nordicsemi.com/f/nordic-q-a/26800/nrf905-phase-noiseHi , 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&#39;s all ok. Can be phase noise ? it depends on the nRF905&#39; VCO? 16 Mhz EXTAL en-USTelligent Community 13Thu, 16 Nov 2017 07:52:04 GMThttps://devzone.nordicsemi.com/thread/105331?ContentTypeID=1Thu, 16 Nov 2017 07:52:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0b27f1fa-6425-488e-baaf-d1e9266ec76bovrebekk<p>Hi</p> <p>Apparently this could be noise on your power supply.<br /> Are you able to test using an external power source, like a lab power supply?</p> <p>You might want to scope your supply lines as well, and see if you can measure the noise.</p> <p>Best regards</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/105330?ContentTypeID=1Tue, 14 Nov 2017 13:42:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a57b2913-c0bf-4481-ad09-274cf45656dcAz-eddine<p>Hi, my schematic is the same suggested on the nRF905 datasheet.I used it for many years but in theese days I&#39;m having this problem.I checked all components arround it ,nothing strange!! Thanks in advance</p> <p>Best regards</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/105329?ContentTypeID=1Tue, 14 Nov 2017 12:04:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:149ef75a-0f8d-43bf-b7b3-ddc0e52d7b51ovrebekk<p>Hi</p> <p>I need some assistance from one of the hardware experts on this one. He is out on travel today, but should be back tomorrow.</p> <p>In the mean time, could you share your schematic and layout files?</p> <p>Then it is easier for us to find the problem.</p> <p>Best regards</p><div style="clear:both;"></div>