On AO91 passes over the past couple of weeks, has anyone else been hearing a strong signal with no audio? It is strong enough to cover up many other stations. Lasts about 15 seconds or so. I am wondering if this is actually being transmitted on the satellite, or if I just have a birdie or some intermod on my end.
73 John AF5CC
It appears to be some idiot, somewhere in the eastern half of the U.S., who is intentionally jamming the bird. -- Mark D. Johns, KØJM AMSAT Ambassador & News Service Editor Brooklyn Park, MN USA EN35hd ----------------------------------------------- "Heaven goes by favor; if it went by merit, you would stay out and your dog would go in." ---Mark Twain
On Fri, Nov 25, 2022 at 9:26 PM af5cc@fidmail.com af5cc@fidmail.com wrote:
On AO91 passes over the past couple of weeks, has anyone else been hearing a strong signal with no audio? It is strong enough to cover up many other stations. Lasts about 15 seconds or so. I am wondering if this is actually being transmitted on the satellite, or if I just have a birdie or some intermod on my end.
73 John AF5CC
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Hey Mark.How's things going on this Thanksgiving weekend?I've been hearing that signal here in SE Michigan, in EN82ig, for several years now.It wasn't always there.I don't think it's being done on purpose.But it does appear to be moving around a bit.Some days, it's right there, clobbering most of the AO-91 downlink frequency.But on other days, it's moved.Sometimes considerably.I wish we could get our FCC to send one of their well known tracking trucks over here, to sniff down that signal.It comes in fairly strong around here.And it's always here.Fortunately, not always clobbering AO-91.But it is always thereSo it shouldn't be too hard to find.For several years, there were no signals there.So it is amazing, right after that satellite became popular, a signal appears. Just thought you folks should know. I don't know if it's being done on purpose, but I wish they could find it and lock it down. I'm very good at tracking down signals.I used to be in the Civil Air Patrol. Whenever an Emergency Locator Beacon would activate, we would get contacted to track it down, and shut it off. We have special tracking receivers that allow us to do exactly that. We've been doing that for years. Most of the time, it's an accidental trigger. But there are times when the signal was for real. It happened once in Canada. And once it happened when a boat capsized and it had an ERPIRB inside the boat. It triggered. And they found it. There are a fleet of satellites. Monitored 24/7 by stations in both the US, Canada, the Russia. Those satellites do a very good job of tracking down those ELT and EPRIB signals. You can usually buy or rent one of your going hiking into a remote area. Good luck to you all. I hope you'll never need one. But it's nice to know it's there if you do. de BILL, AA8WH. Sent from Yahoo Mail on Android
On Sat, Nov 26, 2022 at 8:14 AM, Mark Johns, K0JMk0jm.mark@gmail.com wrote: -----------------------------------------------------------
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Are you saying you can hear the local uplink signal where you live?
73, John Brier KG4AKV
On Sat, Nov 26, 2022, 08:53 William Herzberg via AMSAT-BB < amsat-bb@amsat.org> wrote:
Hey Mark. How's things going on this Thanksgiving weekend? I've been hearing that signal here in SE Michigan, in EN82ig, for several years now. It wasn't always there. I don't think it's being done on purpose. But it does appear to be moving around a bit. Some days, it's right there, clobbering most of the AO-91 downlink frequency. But on other days, it's moved. Sometimes considerably. I wish we could get our FCC to send one of their well known tracking trucks over here, to sniff down that signal. It comes in fairly strong around here. And it's always here. Fortunately, not always clobbering AO-91. But it is always there So it shouldn't be too hard to find. For several years, there were no signals there. So it is amazing, right after that satellite became popular, a signal appears.
Just thought you folks should know.
I don't know if it's being done on purpose, but I wish they could find it and lock it down.
I'm very good at tracking down signals. I used to be in the Civil Air Patrol.
Whenever an Emergency Locator Beacon would activate, we would get contacted to track it down, and shut it off.
We have special tracking receivers that allow us to do exactly that.
We've been doing that for years.
Most of the time, it's an accidental trigger.
But there are times when the signal was for real.
It happened once in Canada.
And once it happened when a boat capsized and it had an ERPIRB inside the boat.
It triggered.
And they found it.
There are a fleet of satellites.
Monitored 24/7 by stations in both the US, Canada, the Russia.
Those satellites do a very good job of tracking down those ELT and EPRIB signals.
You can usually buy or rent one of your going hiking into a remote area.
Good luck to you all.
I hope you'll never need one.
But it's nice to know it's there if you do.
de BILL, AA8WH.
Sent from Yahoo Mail on Android https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers&af_wl=ym&af_sub1=Internal&af_sub2=Global_YGrowth&af_sub3=EmailSignature
On Sat, Nov 26, 2022 at 8:14 AM, Mark Johns, K0JM k0jm.mark@gmail.com wrote:
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Perhaps the Max Valier satellite? Beacon frequencies are listed as 145.860 and 145.960.
On 11/26/2022 9:31 AM, Mindspring wrote:
I’m fairly certain the signal Is coming from AO-91. I see exactly what you describe on passes down here in FL and my Fox Telemetry software [unsuccessfully] attempts to lock up on the telemetry frames.
73, Ken Ernandes, N2WWD
73 de JoAnne K9JKM k9jkm@comcast.net BM DMR TG 98006
Thanks for all of the replies on my question. Looks like what I am hearing is actually coming over the satellite, and not some birdie I can take care of locally. I have heard the MV satellite on the AO91 downlink before, but it is more on and off signals as it IDs in CW.
73 John AF5CC
-----Original Message----- From: "Mindspring" n2wwd@mindspring.com Sent: Saturday, November 26, 2022 9:31am To: k0jm@amsat.org Cc: af5cc@fidmail.com, amsat-bb@amsat.org Subject: Re: [AMSAT-BB] Re: AO91 question
I’m fairly certain the signal Is coming from AO-91. I see exactly what you describe on passes down here in FL and my Fox Telemetry software [unsuccessfully] attempts to lock up on the telemetry frames. 73, Ken Ernandes, N2WWD
On Nov 26, 2022, at 8:14 AM, Mark Johns, K0JM k0jm.mark@gmail.com wrote:
It appears to be some idiot, somewhere in the eastern half of the U.S., who is intentionally jamming the bird.
-- Mark D. Johns, KØJM AMSAT Ambassador & News Service Editor Brooklyn Park, MN USA EN35hd ----------------------------------------------- "Heaven goes by favor; if it went by merit, you would stay out and your dog would go in." ---Mark Twain
On Fri, Nov 25, 2022 at 9:26 PM [ af5cc@fidmail.com ]( mailto:af5cc@fidmail.com ) <[ af5cc@fidmail.com ]( mailto:af5cc@fidmail.com )> wrote: On AO91 passes over the past couple of weeks, has anyone else been hearing a strong signal with no audio? It is strong enough to cover up many other stations. Lasts about 15 seconds or so. I am wondering if this is actually being transmitted on the satellite, or if I just have a birdie or some intermod on my end.
73 John AF5CC -----------------------------------------------------------
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participants (6)
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af5cc@fidmail.com
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JoAnne Maenpaa
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John Brier
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Mark Johns, K0JM
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Mindspring
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William Herzberg