[Elecraft] OT: Digital Signals on 20M
For the past several days I have been seeing a couple of powerful digital signals, S9+, between 14.018 to 14.032MHz. They seem to be comprised of 4 or 5 discrete frequencies rapidly moving around in a bandwidth of about 2Khz. When working with a narrow filter it is possible to work through them, with difficulty. With a wide filter, 2.8KHz set to the center of their bandwidth it sounds like a group of castanets clicking away with slightly different tones. I might have just discounted them but for the fact that I have just recently gotten a "poor man's" panadapter using a Rockmite and Z1 amp from Clifton Labs with the Rocky software monitoring my K3's IF output. These two signals have been here every time I get on 20M and are quite impressive in the amount of bandwidth they occupy. I have not seen this on any other band. Forgive my ignorance of digital modes, but I just don't recall hearing this sort of signal before. Can anyone let me know what this might be? Ken, NU4I __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Digital Signals on 20M
Ken, I don't know what they are, but I hear them too--on all radios. Dave W7AQK - Original Message - From: "Kenneth Moorman" To: Sent: Friday, March 27, 2009 8:44 AM Subject: [Elecraft] OT: Digital Signals on 20M > For the past several days I have been seeing a couple of powerful digital > signals, S9+, between 14.018 to 14.032MHz. They seem to be comprised of 4 > or 5 discrete frequencies rapidly moving around in a bandwidth of about > 2Khz. When working with a narrow filter it is possible to work through > them, with difficulty. With a wide filter, 2.8KHz set to the center of > their bandwidth it sounds like a group of castanets clicking away with > slightly different tones. I might have just discounted them but for the > fact that I have just recently gotten a "poor man's" panadapter using a > Rockmite and Z1 amp from Clifton Labs with the Rocky software > monitoring > my K3's IF output. These two signals have been here every time I get on > 20M > and are quite impressive in the amount of bandwidth they occupy. I have > not > seen this on any other band. Forgive my ignorance of digital modes, but I > just don't recall hearing this sort of signal before. Can anyone let me > know what this might be? > > Ken, NU4I > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Digital Signals on 20M
It's peaking at 10 over here at a heading of 130 degrees from SE Michigan. Dave, K8AA - Original Message - From: "Kenneth Moorman" To: Sent: Friday, March 27, 2009 11:44 AM Subject: [Elecraft] OT: Digital Signals on 20M > For the past several days I have been seeing a couple of powerful digital > signals, S9+, between 14.018 to 14.032MHz. They seem to be comprised of 4 > or 5 discrete frequencies rapidly moving around in a bandwidth of about > 2Khz. When working with a narrow filter it is possible to work through > them, with difficulty. With a wide filter, 2.8KHz set to the center of > their bandwidth it sounds like a group of castanets clicking away with > slightly different tones. I might have just discounted them but for the > fact that I have just recently gotten a "poor man's" panadapter using a > Rockmite and Z1 amp from Clifton Labs with the Rocky software > monitoring > my K3's IF output. These two signals have been here every time I get on > 20M > and are quite impressive in the amount of bandwidth they occupy. I have > not > seen this on any other band. Forgive my ignorance of digital modes, but I > just don't recall hearing this sort of signal before. Can anyone let me > know what this might be? > > Ken, NU4I > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.285 / Virus Database: 270.11.30/2026 - Release Date: 03/27/09 07:13:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Digital Signals on 20M
I've heard, in the last couple of days, that the ARRL Intruder Watch is looking into this. ~Iain / N6ML Dave Larson wrote: > It's peaking at 10 over here at a heading of 130 degrees from SE Michigan. > > Dave, K8AA > > - Original Message - > From: "Kenneth Moorman" > To: > Sent: Friday, March 27, 2009 11:44 AM > Subject: [Elecraft] OT: Digital Signals on 20M > > >> For the past several days I have been seeing a couple of powerful digital >> signals, S9+, between 14.018 to 14.032MHz. They seem to be comprised of 4 >> or 5 discrete frequencies rapidly moving around in a bandwidth of about >> 2Khz. When working with a narrow filter it is possible to work through >> them, with difficulty. With a wide filter, 2.8KHz set to the center of >> their bandwidth it sounds like a group of castanets clicking away with >> slightly different tones. I might have just discounted them but for the >> fact that I have just recently gotten a "poor man's" panadapter using a >> Rockmite and Z1 amp from Clifton Labs with the Rocky software >> monitoring >> my K3's IF output. These two signals have been here every time I get on >> 20M >> and are quite impressive in the amount of bandwidth they occupy. I have >> not >> seen this on any other band. Forgive my ignorance of digital modes, but I >> just don't recall hearing this sort of signal before. Can anyone let me >> know what this might be? >> >> Ken, NU4I >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > > > > > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.285 / Virus Database: 270.11.30/2026 - Release Date: 03/27/09 > 07:13:00 > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Digital Signals on 20M
I've heard these signals for years on 18080 kHz and up. Perhaps 17M prop is so poor they moved to 20M. There are at times now three distinct stations on 20M CW. They are wider than my 2.7KHz filter. Spectrogram shows they are composed of more than 8 tones, spaced about 200 Hz apart. I seem to hear two stations on each frequency, one strong and one weak -- indicating some kind of linked communications. Turning the beam shows peaks on EU and SA from NC. The K3 noise blanketer (DSP only t3-7) and narrow filters do a really good job of digging out CW signals under them. 73 de Brian/K3KO Iain MacDonnell - N6ML wrote: >I've heard, in the last couple of days, that the ARRL Intruder Watch is >looking into this. > > ~Iain / N6ML > > >Dave Larson wrote: > > >>It's peaking at 10 over here at a heading of 130 degrees from SE Michigan. >> >>Dave, K8AA >> >>- Original Message - >>From: "Kenneth Moorman" >>To: >>Sent: Friday, March 27, 2009 11:44 AM >>Subject: [Elecraft] OT: Digital Signals on 20M >> >> >> >> >>>For the past several days I have been seeing a couple of powerful digital >>>signals, S9+, between 14.018 to 14.032MHz. They seem to be comprised of 4 >>>or 5 discrete frequencies rapidly moving around in a bandwidth of about >>>2Khz. When working with a narrow filter it is possible to work through >>>them, with difficulty. With a wide filter, 2.8KHz set to the center of >>>their bandwidth it sounds like a group of castanets clicking away with >>>slightly different tones. I might have just discounted them but for the >>>fact that I have just recently gotten a "poor man's" panadapter using a >>>Rockmite and Z1 amp from Clifton Labs with the Rocky software >>>monitoring >>>my K3's IF output. These two signals have been here every time I get on >>>20M >>>and are quite impressive in the amount of bandwidth they occupy. I have >>>not >>>seen this on any other band. Forgive my ignorance of digital modes, but I >>>just don't recall hearing this sort of signal before. Can anyone let me >>>know what this might be? >>> >>>Ken, NU4I >>> >>>__ >>>Elecraft mailing list >>>Home: http://mailman.qth.net/mailman/listinfo/elecraft >>>Help: http://mailman.qth.net/mmfaq.htm >>>Post: mailto:Elecraft@mailman.qth.net >>> >>>This list hosted by: http://www.qsl.net >>>Please help support this email list: http://www.qsl.net/donate.html >>> >>> >> >> >> >> >>No virus found in this incoming message. >>Checked by AVG - www.avg.com >>Version: 8.5.285 / Virus Database: 270.11.30/2026 - Release Date: 03/27/09 >>07:13:00 >> >>__ >>Elecraft mailing list >>Home: http://mailman.qth.net/mailman/listinfo/elecraft >>Help: http://mailman.qth.net/mmfaq.htm >>Post: mailto:Elecraft@mailman.qth.net >> >>This list hosted by: http://www.qsl.net >>Please help support this email list: http://www.qsl.net/donate.html >> >> >__ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft@mailman.qth.net > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html > > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Digital Signals on 20M
I've been monitoring these signals for a few days now. They seem to run for long periods without a break, although I have heard a few times when they stopped for a few seconds. I've always seen them in pairs spaced about 15kHz apart. I don't have the bandwidth to be able to tell if the pairs are related but I kind of suspect they are. Each signal seems to consist of two groups of tones with the groups spaced about 1.5kHz apart. Each group consists of 8 tones, each about 100Hz apart. The tones alternate between the groups (i.e. one tone from group A, followed by one tone from group B). Each tone seems to be on for about 10mS with a gap of about 34mS between tones. They're never extremely strong here in southern Oregon, maybe S5 or S7. I've also heard them on 40m. 73 -- Joe KB8AP On Mar 27, 2009, at 8:44 AM, Kenneth Moorman wrote: > For the past several days I have been seeing a couple of powerful > digital > signals, S9+, between 14.018 to 14.032MHz. They seem to be > comprised of 4 > or 5 discrete frequencies rapidly moving around in a bandwidth of > about > 2Khz. When working with a narrow filter it is possible to work > through > them, with difficulty. With a wide filter, 2.8KHz set to the center > of > their bandwidth it sounds like a group of castanets clicking away with > slightly different tones. I might have just discounted them but for > the > fact that I have just recently gotten a "poor man's" panadapter > using a > Rockmite and Z1 amp from Clifton Labs with the Rocky software > monitoring > my K3's IF output. These two signals have been here every time I > get on 20M > and are quite impressive in the amount of bandwidth they occupy. I > have not > seen this on any other band. Forgive my ignorance of digital modes, > but I > just don't recall hearing this sort of signal before. Can anyone > let me > know what this might be? > > Ken, NU4I > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Digital Signals on 20M
I hear them S9+ at 270 degrees from South Central PA. Although I'm not sure how directional my beam (Force 12/C3) is. Interesting. Mike, N3XPD It's peaking at 10 over here at a heading of 130 degrees from SE Michigan. Dave, K8AA - Original Message - From: "Kenneth Moorman" To: Sent: Friday, March 27, 2009 11:44 AM Subject: [Elecraft] OT: Digital Signals on 20M > For the past several days I have been seeing a couple of powerful digital > signals, S9+, between 14.018 to 14.032MHz. They seem to be comprised of 4 > or 5 discrete frequencies rapidly moving around in a bandwidth of about > 2Khz. When working with a narrow filter it is possible to work through > them, with difficulty. With a wide filter, 2.8KHz set to the center of > their bandwidth it sounds like a group of castanets clicking away with > slightly different tones. I might have just discounted them but for the > fact that I have just recently gotten a "poor man's" panadapter using a > Rockmite and Z1 amp from Clifton Labs with the Rocky software > monitoring > my K3's IF output. These two signals have been here every time I get on > 20M > and are quite impressive in the amount of bandwidth they occupy. I have > not > seen this on any other band. Forgive my ignorance of digital modes, but I > just don't recall hearing this sort of signal before. Can anyone let me > know what this might be? > > Ken, NU4I > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.285 / Virus Database: 270.11.30/2026 - Release Date: 03/27/09 07:13:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://n2.nabble.com/OT%3A--Digital-Signals-on-20M-tp2544943p2545356.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Digital Signals on 20M
-Original Message- From: Kenneth Moorman [mailto:n...@cox.net] Sent: Friday, March 27, 2009 1:59 PM To: 'N3XPD' Subject: RE: [Elecraft] OT: Digital Signals on 20M I don't have a beam, but it looks like it could possibly be coming from eastern part of Ohio based on these two bits of dataand it is not so strong in Oregon as it seems to be here in coastal Virginia, which seems to be consistent. Ken, NU4I -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of N3XPD Sent: Friday, March 27, 2009 12:48 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] OT: Digital Signals on 20M I hear them S9+ at 270 degrees from South Central PA. Although I'm not sure how directional my beam (Force 12/C3) is. Interesting. Mike, N3XPD It's peaking at 10 over here at a heading of 130 degrees from SE Michigan. Dave, K8AA - Original Message - From: "Kenneth Moorman" To: Sent: Friday, March 27, 2009 11:44 AM Subject: [Elecraft] OT: Digital Signals on 20M > For the past several days I have been seeing a couple of powerful digital > signals, S9+, between 14.018 to 14.032MHz. They seem to be comprised of 4 > or 5 discrete frequencies rapidly moving around in a bandwidth of about > 2Khz. When working with a narrow filter it is possible to work through > them, with difficulty. With a wide filter, 2.8KHz set to the center of > their bandwidth it sounds like a group of castanets clicking away with > slightly different tones. I might have just discounted them but for the > fact that I have just recently gotten a "poor man's" panadapter using a > Rockmite and Z1 amp from Clifton Labs with the Rocky software > monitoring > my K3's IF output. These two signals have been here every time I get on > 20M > and are quite impressive in the amount of bandwidth they occupy. I have > not > seen this on any other band. Forgive my ignorance of digital modes, but I > just don't recall hearing this sort of signal before. Can anyone let me > know what this might be? > > Ken, NU4I > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.285 / Virus Database: 270.11.30/2026 - Release Date: 03/27/09 07:13:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://n2.nabble.com/OT%3A--Digital-Signals-on-20M-tp2544943p2545356.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Digital Signals on 20M
For the past several days I have been seeing a couple of powerful digital signals, S9+, between 14.018 to 14.032MHz. They seem to be comprised of 4 or 5 discrete frequencies rapidly moving around in a bandwidth of about 2Khz. Can anyone let me know what this might be? The latest IARU Region 1 Monitoring System report published yesterday mentions it as a Chinese FSK8 ALE net. 73, Markus -- View this message in context: http://n2.nabble.com/OT%3A--Digital-Signals-on-20M-tp2544943p2545850.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Digital Signals on 20M
My beam pattern may not be as good as usual because the tower is cranked down (storm last night), but from my QTH in Arizona the beam heading right now seems to be about 120 degrees, which might put the location in the West Indies, Venezuela or Brazil. 73, Erik K7TV > > I don't have a beam, but it looks like it could possibly be coming from > eastern part of Ohio based on these two bits of dataand it is not so > strong in Oregon as it seems to be here in coastal Virginia, which seems > to > be consistent. > > Ken, NU4I > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Digital Signals on 20M
That is consistent with my beam heading of 120, assuming I am receiving China long path. 73, Erik K7TV > > The latest IARU Region 1 Monitoring System report published yesterday > mentions it as a Chinese FSK8 ALE net. > > 73, Markus > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
