I have all these spurious signals in my K3, too. They are caused by my wireless router. But are the result of using wired connections to my office computers. When I remove the LAN cables these signals disappear, along with many on the hf bands.
I have received the ferrites recommended by K9YC. The plan is to install them on Wednesday. I have both the #43 and #61 material. Steve, K6UM On Mon, Jun 29, 2015 at 7:43 PM, Chris Hallinan <[email protected]> wrote: > I've been playing around with 50 MHz USB/CW down at the low end of the band > with a plain ol' dipole. I'm curious about noise and birdies and other > people's experience, as I really don't know what to expect. > > I have a steady S3/4 noise level at all frequencies with the preamp off, > jumping to solid S5 with the preamp engaged. I have several strong signals > (probably harmonics of some interference??) as follows listening in USB > mode, preamp off: > > 50.026: S4 > 50.057: S6 > 50.087: S5 > 50.117: S6 > 50.148: S6 > 50:178: S4 > and more as I tune up. Notice the 30KHz spacing. > > These are all steady 2-tone signals with perhaps a couple hundred hertz > difference in the two tones. No variation with day/night or propagation as > far as I can tell. They all disappear when the antenna is disconnected. > > First, is my background noise level local or should that be expected on 50 > MHz? And what are these signals spaced every 30 KHz or so? > > Could this be broadcast overload way up here on 50 MHz? I do have a fairly > close 1580 KHz AM station broadcasting 1100 watts during daytime, and 110 > at night, but I use an Array Solutions BCB filter. > > What have others experienced? > > Thanks and 73, > > Chris > K1AY > > > > > -- > Life is like Linux - it never stands still. > ______________________________________________________________ > 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] > ______________________________________________________________ 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]
