I sometimes notice a host of phantoms that follow the tuning, but only when the preamp is off. Turning on the preamp generally kills them all.
This doesn’t help with the fixed frequency junk being generated by the myriad of switchers in the house, though. Different issue. Grant NQ5T > On Nov 27, 2018, at 6:16 PM, Don Wilhelm <[email protected]> wrote: > > Another thing to suspect is noise generated by a computer, or ethernet modems > and routers and being routed to the K3 and P3 via the K3 to computer > connection. I believe that is why Tom suggested winding the USB cable > through a type 31 ferrite core. BTW, that core should be near the computer > end). > > Disconnect and power down the computer to see if that is contributing to the > "spurs". > > 73, > Don W3FPR > >> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
