When the 11 meter band is open I often hear a wider-band digital mode of short duration, usually above the US CB band. In the attachment one of these signals appears between 27.7 - 27.8mHz and the other beween 27.9 - 28.0mHz with white ribbon-like waterfalls. Occasionally they're seen in the upper part of the USA CB band also. Thanks for your help.
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Unknown Digital 11m Signal
- Thread starter spongella
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N1EXA
FT8 Huntin Mudd Duck on the deep end of the pond !
Here Where I live In New Bedford MA I have RF welders being used at a local factory so Ill get a Sweeping buzz on the 11 meter band.
RF welding can be for plastic's or thin Metals.
You will also see some Stationary pulses that are not sweeping - They can Be some Pulse radar for Propigation or Stuff across in Europe
in the war in the ukraine - The Low Frequency Anti aicraft radars the Russians use alot of spectrum jumping around on 25-30 mhz
The you just have the Wild West on 38 LSB sending RTTY Packet and Slow Scan TV Pictures because in Europe its Legal for some
Digital Modes where its not in the US pluse many Countries Like Russia or Brazil they have 80-120 More Channels of CB than the US Look it up.
Google RF Welding 27Mhz or Fish Hooks On SDR to Get More Information.
Pete N1EXA
RF welding can be for plastic's or thin Metals.
You will also see some Stationary pulses that are not sweeping - They can Be some Pulse radar for Propigation or Stuff across in Europe
in the war in the ukraine - The Low Frequency Anti aicraft radars the Russians use alot of spectrum jumping around on 25-30 mhz
The you just have the Wild West on 38 LSB sending RTTY Packet and Slow Scan TV Pictures because in Europe its Legal for some
Digital Modes where its not in the US pluse many Countries Like Russia or Brazil they have 80-120 More Channels of CB than the US Look it up.
Google RF Welding 27Mhz or Fish Hooks On SDR to Get More Information.
Pete N1EXA
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The digital mode JS8Call is popular in Europe. There are some in the US and Canada using it. It's primarily done on Channel 25, USB, but some just go anywhere. You can hear what it sounds like here: JS8 - Signal Identification Wiki
I've picked up a few EU and Mexican stations at my QTH. Below is a screen grab of PSKreporter showing all the stations that are active on JS8 as I type this message.
I've picked up a few EU and Mexican stations at my QTH. Below is a screen grab of PSKreporter showing all the stations that are active on JS8 as I type this message.
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11 Meter SSTV Fiesta
There's a 2022 SSTV Fiesta this week with images being transmitted daily on 27.700 MHz. I will post some images that I have received very soon.
Thank you!
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Note that for things like this on HF, and audio file (use upper sideband and only FM instead if it appears to be an FM signal) is much more helpful than a waterfall though having both is best. Some of us could even attempt to decode it if it were an audio file.
N1EXA
FT8 Huntin Mudd Duck on the deep end of the pond !
Got these things on CH 23 around here all the time !
Pete N1EXA
Pete N1EXA
N1EXA
FT8 Huntin Mudd Duck on the deep end of the pond !
N1EXA
FT8 Huntin Mudd Duck on the deep end of the pond !
Pulse Radar on 11 Meters - Get this quite a bit when Propagation from Europe is hot can see why cb is banned in Ukraine !
Pete N1EXA
Yes it's my thread but that is an SSTV signal.Related to this thread ?
11 Meter SSTV Fiesta
There's a 2022 SSTV Fiesta this week with images being transmitted daily on 27.700 MHz. I will post some images that I have received very soon.
That's interesting, thank you. Well, these signals only appear when the band's open. Maybe it's welding DX
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N1EXA
FT8 Huntin Mudd Duck on the deep end of the pond !
Just don’t think it’s rf welding it must be local seeing its a radio emission and will propigate just as good as a cb or ham radio signal.That's interesting, thank you. Well, these signals only appear when the band's open. Maybe it's welding DX
I found the local hair salon had a hair removal unit for woman to have facial hair removed. It fires sweep right in the cb band when they us it. Used a portable sdr to home in on it the woman in the salon gave me the owners manual to read . Very interesting.
When they use it I get a sweeping carrier on sdr water Fall.
My galaxy Saturn has a tap for a sdr water Fall so I see all this noise across the band.
It’s actually quit interesting whats out there on cb and freehand.
Pete N1EXA
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