Re: weird interference, part2
An SDR connected to a laptop might also work OK.? At one time, AirSpy had a wide sweep "sort'a" spectrum analyzer.? I don't know if it's still around the Internet.
Dave - W?LEV
Thanks Dave .... now if I only had a battery-powered AM radio!? hihi
I'll search the cellar must one somewhere.....bill....
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Hi All and jim,
I ?m trying to connect with a Dongle but get only these message:
I have ben around in here and read jim's instruktion about the Option settings but there are no dongle in that menu more to set ?
Please helpe me out! - maybe jim are around!
--
Aloha - john s,
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Re: Possible super nova remnants ( SNR) ? - Heliotown
Hi Andrew,
Thanks for that info. I will study if there is a connection. I was
actually wondering if this stuff might be CasA of CygA scintillation. ?
See:
Tom
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On Sat, May 10, 2025, 12:13 PM Thomas Ashcraft via groups.io <ashcraft=
[email protected]> wrote:
Possible super nova remnants ( SNR) ? Here are some recent spectrograms.
Could be the beginning of SNR season? Tom - Heliotown
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Re: weird interference, part2
Thanks Dave .... now if I only had a battery-powered AM radio!? hihi
I'll search the cellar must one somewhere.....bill....
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Re: Possible super nova remnants ( SNR) ? - Heliotown
On Sat, May 10, 2025, 12:13 PM Thomas Ashcraft via <ashcraft= [email protected]> wrote: Possible super nova remnants ( SNR) ? Here are some recent spectrograms.
Could be the beginning of SNR season?? Tom - Heliotown
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Possible super nova remnants ( SNR) ? - Heliotown
Possible super nova remnants ( SNR) ? Here are some recent spectrograms.
Could be the beginning of SNR season? Tom - Heliotown
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May 10 2025 Good Io-B - Heliotown
May 10 2025 Io-B - Heliotown - Tom
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Re: weird interference, part2
While the RFI is "on" for less than 2-minutes each burst, from your antenna location, it should be possible to at least determine the source direction using a battery-powered AM radio.? Of course, you might, from home, determine the full frequency extent of the RFI before searching.? There may be frequencies where it is stronger and, therefore, easier to determine the direction of the RFI source.
Dave - W?LEV?
Because I don't turn on the "jove" radio each day I don't have a continuous daily record but here's what I've found:
5/9 RFI 2154:30-:55
5/8 None
5/6 RFI 2140-2142
5/5 None
5/4 None
5/3 2132:50-2133:15
5/2 None
4/28 None
4/27 2154:40-2157:30
4/26 22:14-22:18
4/24 None
4/23 None
4/22 None
4/21 None
4/20 2231:30-2232:30
?
The pattern of RFI is not constant but there is always a "wide" signal and then "narrow" ones.
As Duane said, "Weird"...but interesting....John and Duane frequently "hear" stuff that I don't so they may have RFI for my days of None....bill....
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weird interference, part2
Because I don't turn on the "jove" radio each day I don't have a continuous daily record but here's what I've found:
5/9 RFI 2154:30-:55
5/8 None
5/6 RFI 2140-2142
5/5 None
5/4 None
5/3 2132:50-2133:15
5/2 None
4/28 None
4/27 2154:40-2157:30
4/26 22:14-22:18
4/24 None
4/23 None
4/22 None
4/21 None
4/20 2231:30-2232:30
?
The pattern of RFI is not constant but there is always a "wide" signal and then "narrow" ones.
As Duane said, "Weird"...but interesting....John and Duane frequently "hear" stuff that I don't so they may have RFI for my days of None....bill....
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Re: weird interference/noise
Good morning everyone...
Daune, I saw the same "stuff" here in Maine yesterday but, as John mentioned, this was not the first time and always in the late afternoon.
?
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Re: weird interference/noise
Hi Duane,
This is kind of neat.
Looks to me like the broadband noise is throwing the front end
amplifier into saturation, causing it to go non-linear -- meaning
that instead of amplifying faithfully, it has become a signal
mixer.? It appears that the strong signals at ~19 & ~17 MHz
are being mixed with each other and with the ROTHR sweepers, and
with their aliases, and then mixed with some of those products to
produce the chicken track looking artifacts every 1.5 MHz or so.
--
Dave
On 5/9/25 20:21, Duane via groups.io wrote:
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Show quoted text
Howdy, caught some weird noise and/ or
interference today.
The strange things we sometimes see.
~Duane
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Re: weird interference/noise
Duane: ? ? ? I sometimes see something similar in the late afternoon. Right or wrong, I have attributed this to overload RFI. Interested in other opinions?
On Friday, May 9, 2025, 8:21 PM, Duane via groups.io <duane919@...> wrote:
Howdy, caught some weird noise and/ or
interference today.
The strange things we sometimes see.
~Duane
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Howdy, caught some weird noise and/ or
interference today.
The strange things we sometimes see.
~Duane
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Observations from Grafton, WV.
Some weak solar today.
~Duane
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Re: solar events, 9 May 2025, Prospect, ME
Bill: ? ? ?Not much here.?Captured one bit of weak solar.?It was quite ratty. Elected not to post it. Thanks.
On Friday, May 9, 2025, 7:22 PM, bsneed1 via groups.io <bsneed1@...> wrote: Good evening. Very noisy here. Two spectrograms, the first very doubtful, the second not much better.
....bill....
?
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solar events, 9 May 2025, Prospect, ME
Good evening. Very noisy here. Two spectrograms, the first very doubtful, the second not much better.
....bill....
?
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Observations from Grafton, WV.
Mostly weak solar today.
~Duane
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Re: Io-A May 08 2025 21-22 UT
2114 UT. Nice rolling Type III just happened. Tom
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Re: Io-A May 08 2025 21-22 UT
Thanks for the head's up, Tom.? Too much lightning in the area to see anything, I am afraid.
?
Richard
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Re: Io-A May 08 2025 21-22 UT
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On Thursday, May 8, 2025, 11:37 AM, Thomas Ashcraft <ashcraft@...> wrote: Possible Io-A May 08 2025 21-22 UT. Center pass. It is a noisy time of
local day but Jupiter still
has a chance of passing through the ionosphere. - Tom in New Mexico
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john sommer
Andrew Mount
Dave Typinski
