Re: Alignment guidance for NM0S Buzz-kill


nm0s_qrp
 

Just keep in mind that the Buzz-Kill is for taking out 60 Hz noise.  This can be from motors, power supplies, or bad station grounding.  A lot of switching power supply noise will show up as 60 Hz noise in your receiver.  Alignment should be done with R14 centered, and R8 used to obtain the initial null.  Only then should R14 be touched.  The null is pretty sharp, so tune R8 slowly until the level of any 60 Hz noise drops dramatically.

Join main@4SQRP.groups.io to automatically receive all group messages.