https://devzone.nordicsemi.com/f/nordic-q-a/1605/nrf9e5-changing-define-hfreq-makes-no-differenceI am using a modified sample of your rangedemo example and can get it to work. To test if I am switching to 915MHz I change the HFREQ to 1 but the receiver that is set to 0 still picks of the signal. Is this possible? :oen-USTelligent Community 13Thu, 13 Feb 2014 12:37:24 GMThttps://devzone.nordicsemi.com/thread/7080?ContentTypeID=1Thu, 13 Feb 2014 12:37:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:561e52a6-d9e6-4eaa-9937-4b6dc8ae1effPaul Bosworth<p>Never mind - It seems to only happen when TX and RX are in very close proximity - I assume it is a harmonic pickup. Maybe you could shed some light.</p><div style="clear:both;"></div>