Re: Topband: Speaking of Noises...
Interesting thought, Jim, but you have lost the context. What I was listening to was Tim's recording. 'JK On Friday, February 23, 2018 4:01 PM, Jim Jim wrote: Jeff, try turning off all of the Cell phones located near your receiver (and maybe in the house) This sounds like the sound of a Cell phone polling the local tower that I had several years ago it often drives me nuts because my wife' phone sometimes gets into the receiver as well. Jim K3YBN Message: 4 Date: Thu, 22 Feb 2018 19:03:03 + (UTC) From: Jeff Kincaid To: Tim Shoppa , "ws6x@gmail.com" Cc: topBand List Subject: Re: Topband: Speaking of Noises... Message-ID: <587619042.4047365.1519326183...@mail.yahoo.com> Content-Type: text/plain; charset=UTF-8 I think I'm hearing two groups of four bursts, with the first burst from the second transmitter coinciding with the last burst from the first transmitter.? Anyone agree? Jeff W6JK On Thursday, February 22, 2018 10:51 AM, Tim Shoppa wrote: Here is a recording (made on 80M a few years ago but sounds substantially the same on 160M) of what I'm told is the Wallops Island Ionosonde: http://n3qe.org/wumwum_80M.wav Here is the waveform showing 4 louder cycles followed by three softer cycles: http://n3qe.org/wumwum.png If you look at the second panel of the waveform, you see a 20Hz substructure in the pulses. Even though I'm sitting in once place with a 2.4kHz filter making this recording, I understand that the actual spectrum occupied is wider and it cycles through the bands repeating on a several minute cycle. Tim N3QE _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Speaking of Noises...
Tim, Bill, thanks for posting the files. FWIW: I'm hearing it this evening on both 80 and 160. The sounds on both bands are essentially identical -- as far as this tired old audio engineer can discern. Now the kicker... in real time they sound almost nothing like the recording Tim forwarded. Perhaps if I slowed the playback to about 1/4 speed it would be closer. Still am hearing only 4 pulses. Next step is to listen with a wide bandwidth. Thanks all. Jim - WS6X _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Speaking of Noises...
Thanks for this discussion guys. For years I have head a sound similar to the recording by N3QE but it is not exactly the same. Mine sounds more like the one described by WS6X. The four bursts/spacing interval between the bursts seems longer than on N3QE’s recording. Didn’t give it much thought but always assumed it might be local to me. The other day I was on the phone with a friend 20 miles away and heard the noise over his receiver as it came across my receiver. I have not measured the interval between transmissions, but tonight it has been very active on 160 and 80M. Guessing at the interval, maybe every 3 to 5 minutes but could be closer. Now I know what it is. Thanks again for the info. 73 Charlie N8RR Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10 From: Bill Tippett<mailto:btipp...@alum.mit.edu> Sent: Thursday, February 22, 2018 4:34 PM To: Tim Shoppa<mailto:tsho...@gmail.com>; topband<mailto:topband@contesting.com> Cc: ws6x@gmail.com<mailto:ws6x....@gmail.com> Subject: Re: Topband: Speaking of Noises... Tim N3QE was on the money regarding the Wallops Island (VA) Dynasonde, although the 160 version sounds lower in pitch and is longer in duration. That's probably because at lower frequencies the pulses need to be proportionally longer to get the required resolution. It's definitely wideband as seen on a spectrum display. It's also easily strong enough to cover DX signals (I'd estimate S7 here). I had several instances this weekend of needing call or exchange repeats due to its untimely appearance (e.g. W4ZV TU 599 *) Here's the graphical output of the sounder: https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fsurf.colorado.edu%2FWI937.dcc&data=02%7C01%7C%7Cc7917c4c047e4345ad8608d57a3bfdcc%7C84df9e7fe9f640afb435%7C1%7C0%7C636549320429519785&sdata=2CJRy55j9GDXaUy7cBEnI97ojUhyDTghHPfhQTFXzbU%3D&reserved=0 Your tax dollars at work generating QRM on Topband! 73, Bill W4ZV On Thu, Feb 22, 2018 at 1:50 PM, Tim Shoppa wrote: > Here is a recording (made on 80M a few years ago but sounds substantially > the same on 160M) of what I'm told is the Wallops Island Ionosonde: > > https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fn3qe.org%2Fwumwum_80M.wav&data=02%7C01%7C%7Cc7917c4c047e4345ad8608d57a3bfdcc%7C84df9e7fe9f640afb435%7C1%7C0%7C636549320429519785&sdata=MnV%2FdSNhjARwIffe0D1S2glk4dBeHSYz3%2Bd4VKtzaIE%3D&reserved=0 > > Here is the waveform showing 4 louder cycles followed by three softer > cycles: > > https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fn3qe.org%2Fwumwum.png&data=02%7C01%7C%7Cc7917c4c047e4345ad8608d57a3bfdcc%7C84df9e7fe9f640afb435%7C1%7C0%7C636549320429519785&sdata=jPbuQ971%2B3dVlZTsJ3KsmUPxp68rW6YPLAUffx%2Fb7sA%3D&reserved=0 > > If you look at the second panel of the waveform, you see a 20Hz > substructure in the pulses. > > Even though I'm sitting in once place with a 2.4kHz filter making this > recording, I understand that the actual spectrum occupied is wider and it > cycles through the bands repeating on a several minute cycle. > > Tim N3QE > > > > On Thu, Feb 22, 2018 at 12:56 PM, Jim - WS6X wrote: > >> I too, am curious as to the source. I heard it for many years in Central >> California; hear it at my current QTH in Central Shenandoah Valley; and >> heard it last weekend at NR4M. >> I describe it as a scratchy sound, sometimes with a bit of tonality. >> Always 4 pulses (although I don't think I've ever heard the 4 followed by 3 >> as Bill describes.). I've never timed the interval between the groups of 4, >> but it is fairly infrequent. I'll hear it throughout the evening when I'm >> at the radio for long periods. It is loud enough on 160 here in VA that it >> will wipe out all but the strongest signals. I will have to pay more >> attention to details and record when I hear it. >> I wish I was better at phonics, but what I hear has distinct articulation: >> "Gugghk gugghk gugghk gugghk". 😊 >> Jim, WS6X >> >> 1. Speaking of noises... (Bill Tippett) >> Message: 1 >> Date: Wed, 21 Feb 2018 12:48:20 -0500 >> From: Bill Tippett >> To: topband >> Subject: Topband: Speaking of noises... >> >> Does anyone know the source of periodic wideband buzzes that sound like >> this: >> >> buzzz..buzzz..buzzz..buzzz (i.e. 4X then pause) buz..buz..buz (3X ~10 dB >> down). >> >> I believe this may be some sort of ionospheric sounder but I've heard >> this for decades, including when I was in Colorado. Hopefully someone >> knows what's generating this. >&g
Re: Topband: Speaking of Noises...
Tim N3QE was on the money regarding the Wallops Island (VA) Dynasonde, although the 160 version sounds lower in pitch and is longer in duration. That's probably because at lower frequencies the pulses need to be proportionally longer to get the required resolution. It's definitely wideband as seen on a spectrum display. It's also easily strong enough to cover DX signals (I'd estimate S7 here). I had several instances this weekend of needing call or exchange repeats due to its untimely appearance (e.g. W4ZV TU 599 *) Here's the graphical output of the sounder: http://surf.colorado.edu/WI937.dcc Your tax dollars at work generating QRM on Topband! 73, Bill W4ZV On Thu, Feb 22, 2018 at 1:50 PM, Tim Shoppa wrote: > Here is a recording (made on 80M a few years ago but sounds substantially > the same on 160M) of what I'm told is the Wallops Island Ionosonde: > > http://n3qe.org/wumwum_80M.wav > > Here is the waveform showing 4 louder cycles followed by three softer > cycles: > > http://n3qe.org/wumwum.png > > If you look at the second panel of the waveform, you see a 20Hz > substructure in the pulses. > > Even though I'm sitting in once place with a 2.4kHz filter making this > recording, I understand that the actual spectrum occupied is wider and it > cycles through the bands repeating on a several minute cycle. > > Tim N3QE > > > > On Thu, Feb 22, 2018 at 12:56 PM, Jim - WS6X wrote: > >> I too, am curious as to the source. I heard it for many years in Central >> California; hear it at my current QTH in Central Shenandoah Valley; and >> heard it last weekend at NR4M. >> I describe it as a scratchy sound, sometimes with a bit of tonality. >> Always 4 pulses (although I don't think I've ever heard the 4 followed by 3 >> as Bill describes.). I've never timed the interval between the groups of 4, >> but it is fairly infrequent. I'll hear it throughout the evening when I'm >> at the radio for long periods. It is loud enough on 160 here in VA that it >> will wipe out all but the strongest signals. I will have to pay more >> attention to details and record when I hear it. >> I wish I was better at phonics, but what I hear has distinct articulation: >> "Gugghk gugghk gugghk gugghk". 😊 >> Jim, WS6X >> >> 1. Speaking of noises... (Bill Tippett) >> Message: 1 >> Date: Wed, 21 Feb 2018 12:48:20 -0500 >> From: Bill Tippett >> To: topband >> Subject: Topband: Speaking of noises... >> >> Does anyone know the source of periodic wideband buzzes that sound like >> this: >> >> buzzz..buzzz..buzzz..buzzz (i.e. 4X then pause) buz..buz..buz (3X ~10 dB >> down). >> >> I believe this may be some sort of ionospheric sounder but I've heard >> this for decades, including when I was in Colorado. Hopefully someone >> knows what's generating this. >> >> 73, Bill W4ZV >> >> _ >> Topband Reflector Archives - http://www.contesting.com/_topband > > > _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Speaking of Noises...
I think I'm hearing two groups of four bursts, with the first burst from the second transmitter coinciding with the last burst from the first transmitter. Anyone agree? Jeff W6JK On Thursday, February 22, 2018 10:51 AM, Tim Shoppa wrote: Here is a recording (made on 80M a few years ago but sounds substantially the same on 160M) of what I'm told is the Wallops Island Ionosonde: http://n3qe.org/wumwum_80M.wav Here is the waveform showing 4 louder cycles followed by three softer cycles: http://n3qe.org/wumwum.png If you look at the second panel of the waveform, you see a 20Hz substructure in the pulses. Even though I'm sitting in once place with a 2.4kHz filter making this recording, I understand that the actual spectrum occupied is wider and it cycles through the bands repeating on a several minute cycle. Tim N3QE On Thu, Feb 22, 2018 at 12:56 PM, Jim - WS6X wrote: > I too, am curious as to the source. I heard it for many years in Central > California; hear it at my current QTH in Central Shenandoah Valley; and > heard it last weekend at NR4M. > I describe it as a scratchy sound, sometimes with a bit of tonality. > Always 4 pulses (although I don't think I've ever heard the 4 followed by 3 > as Bill describes.). I've never timed the interval between the groups of 4, > but it is fairly infrequent. I'll hear it throughout the evening when I'm > at the radio for long periods. It is loud enough on 160 here in VA that it > will wipe out all but the strongest signals. I will have to pay more > attention to details and record when I hear it. > I wish I was better at phonics, but what I hear has distinct articulation: > "Gugghk gugghk gugghk gugghk". 😊 > Jim, WS6X > > 1. Speaking of noises... (Bill Tippett) > Message: 1 > Date: Wed, 21 Feb 2018 12:48:20 -0500 > From: Bill Tippett > To: topband > Subject: Topband: Speaking of noises... > > Does anyone know the source of periodic wideband buzzes that sound like > this: > > buzzz..buzzz..buzzz..buzzz (i.e. 4X then pause) buz..buz..buz (3X ~10 dB > down). > > I believe this may be some sort of ionospheric sounder but I've heard this > for decades, including when I was in Colorado. Hopefully someone knows > what's generating this. > > 73, Bill W4ZV > > _ > Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Speaking of Noises...
Here is a recording (made on 80M a few years ago but sounds substantially the same on 160M) of what I'm told is the Wallops Island Ionosonde: http://n3qe.org/wumwum_80M.wav Here is the waveform showing 4 louder cycles followed by three softer cycles: http://n3qe.org/wumwum.png If you look at the second panel of the waveform, you see a 20Hz substructure in the pulses. Even though I'm sitting in once place with a 2.4kHz filter making this recording, I understand that the actual spectrum occupied is wider and it cycles through the bands repeating on a several minute cycle. Tim N3QE On Thu, Feb 22, 2018 at 12:56 PM, Jim - WS6X wrote: > I too, am curious as to the source. I heard it for many years in Central > California; hear it at my current QTH in Central Shenandoah Valley; and > heard it last weekend at NR4M. > I describe it as a scratchy sound, sometimes with a bit of tonality. > Always 4 pulses (although I don't think I've ever heard the 4 followed by 3 > as Bill describes.). I've never timed the interval between the groups of 4, > but it is fairly infrequent. I'll hear it throughout the evening when I'm > at the radio for long periods. It is loud enough on 160 here in VA that it > will wipe out all but the strongest signals. I will have to pay more > attention to details and record when I hear it. > I wish I was better at phonics, but what I hear has distinct articulation: > "Gugghk gugghk gugghk gugghk". 😊 > Jim, WS6X > > 1. Speaking of noises... (Bill Tippett) > Message: 1 > Date: Wed, 21 Feb 2018 12:48:20 -0500 > From: Bill Tippett > To: topband > Subject: Topband: Speaking of noises... > > Does anyone know the source of periodic wideband buzzes that sound like > this: > > buzzz..buzzz..buzzz..buzzz (i.e. 4X then pause) buz..buz..buz (3X ~10 dB > down). > > I believe this may be some sort of ionospheric sounder but I've heard this > for decades, including when I was in Colorado. Hopefully someone knows > what's generating this. > > 73, Bill W4ZV > > _ > Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Speaking of Noises...
I too, am curious as to the source. I heard it for many years in Central California; hear it at my current QTH in Central Shenandoah Valley; and heard it last weekend at NR4M. I describe it as a scratchy sound, sometimes with a bit of tonality. Always 4 pulses (although I don't think I've ever heard the 4 followed by 3 as Bill describes.). I've never timed the interval between the groups of 4, but it is fairly infrequent. I'll hear it throughout the evening when I'm at the radio for long periods. It is loud enough on 160 here in VA that it will wipe out all but the strongest signals. I will have to pay more attention to details and record when I hear it. I wish I was better at phonics, but what I hear has distinct articulation: "Gugghk gugghk gugghk gugghk". 😊 Jim, WS6X 1. Speaking of noises... (Bill Tippett) Message: 1 Date: Wed, 21 Feb 2018 12:48:20 -0500 From: Bill Tippett To: topband Subject: Topband: Speaking of noises... Does anyone know the source of periodic wideband buzzes that sound like this: buzzz..buzzz..buzzz..buzzz (i.e. 4X then pause) buz..buz..buz (3X ~10 dB down). I believe this may be some sort of ionospheric sounder but I've heard this for decades, including when I was in Colorado. Hopefully someone knows what's generating this. 73, Bill W4ZV _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Speaking of noises...
Sounds like our former secretary's cell phone. When she placed it next to her computer speakers, we could hear it faintly. Took us a long time to figure that one out! 73, Mike www.w0btu.com On Feb 21, 2018 11:48 AM, "Bill Tippett" wrote: Does anyone know the source of periodic wideband buzzes that sound like this: buzzz..buzzz..buzzz..buzzz (i.e. 4X then pause) buz..buz..buz (3X ~10 dB down). I believe this may be some sort of ionospheric sounder but I've heard this for decades, including when I was in Colorado. Hopefully someone knows what's generating this. _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Speaking of noises...
Here on the east coast, we have have the Wallops Island Ionosounde. Audible on 160M, 80M, and 40M every couple of minutes. Tim. On Wed, Feb 21, 2018 at 12:48 PM, Bill Tippett wrote: > Does anyone know the source of periodic wideband buzzes that sound like > this: > > buzzz..buzzz..buzzz..buzzz (i.e. 4X then pause) buz..buz..buz (3X ~10 dB > down). > > I believe this may be some sort of ionospheric sounder but I've heard this > for decades, including when I was in Colorado. Hopefully someone knows > what's generating this. > > 73, Bill W4ZV > > P.S. to K4PI re salt water. NEC models show approx +10 dB and very low > angles for vertical polarization...no effect for horizontal. > _ > Topband Reflector Archives - http://www.contesting.com/_topband > _ Topband Reflector Archives - http://www.contesting.com/_topband
Topband: Speaking of noises...
Does anyone know the source of periodic wideband buzzes that sound like this: buzzz..buzzz..buzzz..buzzz (i.e. 4X then pause) buz..buz..buz (3X ~10 dB down). I believe this may be some sort of ionospheric sounder but I've heard this for decades, including when I was in Colorado. Hopefully someone knows what's generating this. 73, Bill W4ZV P.S. to K4PI re salt water. NEC models show approx +10 dB and very low angles for vertical polarization...no effect for horizontal. _ Topband Reflector Archives - http://www.contesting.com/_topband
