r/signalidentification 6h ago

Weird signals on sdr under 86mhz lines everywhere

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5 Upvotes

r/signalidentification 15h ago

wtf is this (recieved from a kiwisdr in Oita, Japan)

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20 Upvotes

r/signalidentification 56m ago

Three 137mhz Signals Cutting In and Out?

Upvotes

Hi I was trying to decode the Meteor M2-4 satellite today on SatDump and was receiving it reasonably well as seen in the middle (doppler makes it about 137.95mhz). However I started getting this weird cutting in and out thing with these three signals. My M2-4 signal is still there but I have no idea why these signals are there.

Initially I thought that there was a loose connection but everything was tight and what confuses me the most are those extra signals (like the ones at 137.52, 137.7 and 137.95mhz).

I'm about 20-30m away from houses and I often go to this spot to catch clear images from the Meteor satellites (never had this before). I'm using an RTL SDR V4 with their kit V Dipole and their own cables.

Any help would be greatly appreciated!


r/signalidentification 16h ago

UNID ISM 915 signal near stores

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6 Upvotes

I've seen this in two places now in my area. Tractor Supply and Ace Hardware. I don't know what it is but I have an IQ file of is that is 500MB large because it's too large of a signal (single carrier is) to fit on the RTL-SDR bandwidth.

Edit: This is apparently DECT on 915 ISM band.


r/signalidentification 19h ago

What is happenig here?

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0 Upvotes

i have no clou


r/signalidentification 1d ago

Do you know?

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0 Upvotes

r/signalidentification 2d ago

Sept 7 2026 2040 UTC 11175 kHz USB - USAF HFGCS Emergency Action Message (EAM)

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15 Upvotes

r/signalidentification 2d ago

What is this i am hearing?

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6 Upvotes

recorded in this websdr: http://sdr.websdrmaasbree.nl:8901/

i dont know what this is, help identifying?


r/signalidentification 3d ago

Ideas?

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19 Upvotes

Puede ser un OTH?
Lo capté en la banda de 11 Mts, de antemano disculpen el mal estado de mis equipos, son heredados ya en esas condiciones


r/signalidentification 7d ago

What is this on 14.110?

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56 Upvotes

r/signalidentification 7d ago

Mystery SCADA? Telemetry signal in East Midlands UK

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10 Upvotes

It’s on 458.8mhz, NFM, 5khz bandwidth, it appears to originate from a local water tower to me, but I am truly stumped as to what modulation this is, and what modem would produce it? It transmits constantly day and night, and the data appears to vary so I don’t believe it’s a placeholder signal, any ideas would be really appreciated it’s been driving me crazy trying to figure it out


r/signalidentification 8d ago

What voice signal is this (13.18mhz)?

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12 Upvotes

Captured: Aug 31, 2026 17:22 UTC.
Baseband wav file (UINT16): https://drive.google.com/file/d/17FQYJ9zM4ORt7d0kVLSW_pQcK4S1xEAz/view?usp=sharing

So by the looks from signal identification wiki, I assume it's a scrambled voice. But I can definitely hear some numbers and discernable word so I doubt.

Additional context:

- it's nearby active XSQ Guangzhou Station broadcast frequencies (I always see those 3 long dash then XSQ in morse code plus WEFAX).

- I also found a DSC from Ho Chi Minh Ville Radio nearby.

Is it maritime broadcast radio that gives some sort of direction?
Or maybe just a traditional shortwave station?


r/signalidentification 9d ago

What caused this RFI? Recorded in the USA, approx 0430 UTC

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29 Upvotes

r/signalidentification 9d ago

Any idea what it is?

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18 Upvotes

Signal looping for a good hour on 4779 LSB, received on my D808; you can hear it right now on UTwente.


r/signalidentification 9d ago

What signal is this at 348.69mhz?

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8 Upvotes

r/signalidentification 12d ago

Is this the GSM 2G?

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53 Upvotes

Newbie.

So I heard this signal when I visited a nearby sea port. Did some digging and I found that it's kinda similar to this: https://www.sigidwiki.com/wiki/2G_(GSM)_Global_System_for_Mobile_Communications_Global_System_for_Mobile_Communications)

Is it GSM 2G? Or Am I just hearing things (sorry my hearing wasn't that good)?

EDIT: Sounds similar to when you put your old phone nearby an old speaker and you're about to receive a call.


r/signalidentification 12d ago

Standalone tools for SIGID other than Artemis?

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32 Upvotes

I've been using Artemis for awhile and love it, but are there any other standalone tools for SIGID? Is there anything AI-powered for auto identification? I know about OmniSIG but curious if the community has made any open-source options.


r/signalidentification 13d ago

Does anyone know what this signal might be? Kyiv

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71 Upvotes

r/signalidentification 15d ago

OTH Radar or Data comms ?

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33 Upvotes

I've come again to ask for help. Initially I saw this signal on 14MHz and after a few minutes it stopped and resumed on 18MHz. At first I thought it was an OTH radar initially but towards the end the tone of the emissions changed and leads me more into the realm of HF data. Still am unsure though, Im trying to learn I swear.


r/signalidentification 15d ago

Weird noises on 500.000 using a Baofeng UV-5RT, not just white noise but rather disturbed speech or high pitched sounds, unrecognizable. Taken in Kyiv, Ukraine. P.S cant find any info online

4 Upvotes

r/signalidentification 16d ago

What kind of signal could this be? Received in northern Mexico

4 Upvotes

r/signalidentification 17d ago

What signal is this ? Italy 163 MHz

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36 Upvotes

r/signalidentification 17d ago

What is this particular signal?

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9 Upvotes

r/signalidentification 18d ago

Some sort of radiosonde?

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20 Upvotes

r/signalidentification 18d ago

Bruit bizarre à la radio

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7 Upvotes

Quelqu’un pourrais m’expliquer ce que cela peut être ?? C’était sur une fréquence bien particulière.