A digitally controlled motor can do that. Think dishwasher, washing machine...
Mine does it but I can tell when a neighbor does chores too. 73, Rick wa6nhc Tiny iPhone 5 keypad, typos are inevitable > On Oct 14, 2014, at 8:47 AM, Ken Chandler <[email protected]> wrote: > > Charlie etal > I have seen that here though it tends to stay. > Sunday I had a weird thing happen, on the p3 scope, a tone would sound then a > herring bone effect would occur across the whole p3 screen, these herring > bones! We're spaced about every 1khz top and bottom. > This Tone, maybe a fishing net sounder! Or even OTHR, Went off every minute > or so, making 10m impossible to use. > Anyone know why his happens and or what causes it!! > > Ken.. G0ORH > > Sent from my iPad > > >> On 14 Oct 2014, at 15:13, Charlie T, K3ICH <[email protected]> wrote: >> >> Anyone have any idea what those "weeblies" are on ten meters? They >> typically start high in frequency and flitter past the receiver then stop >> abruptly. They sound like a very unstable oscillator, almost like there's a >> random (or encoded ?) narrow frequency modulation as they move lower down >> the band. They are quite noticeable on the panadapter display and appear to >> have several rates of downward frequency shift. Also, occasionally, a wide >> band "hump" for lack of a better word. will appear in the display and pop >> off a second later as quickly as it came. I've tried tracking them down, >> but they all seem to not be coming from anything in close proximity to me. >> >> I've heard these weeblies for many years. They're not a QRM problem since >> they're only in the passband for a second or so and occur at about 1 to 5 >> per minute. It's just that this is the first time I've been able to "see" >> them on the screen. The display kinda reminds of the Quark capture displays >> we used to see. >> >> 73, Charlie k3ICH >> >> ----- Original Message ----- From: "Thorpe, Jeffrey" <[email protected]> >> To: "elecraft" <[email protected]> >> Sent: Tuesday, October 14, 2014 9:39 AM >> Subject: Re: [Elecraft] HF noise.....30m >> >> >>> Does the CW signal show up on a particular schedule? Does it seem to repeat >>> its transmission a lot? >>> It would be interesting to hear a modern numbers station like this - >>> they've really become scarce these days since the rise of the internet. >>> >>> Jeff >>> KG7HDZ >>> ______________________________________________________________ >>> 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] > ______________________________________________________________ > 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]
