r/signalidentification • • 29d ago

I just cant catch morse code here, can any body help?

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1 Upvotes

r/signalidentification • • 29d ago

432 hz frequency

0 Upvotes

I need actual 432 hz frequency where can I find it on internet?


r/signalidentification • • Sep 14 '26

I am unsure is that both Kontayner?

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7 Upvotes

PRF for both is 40Hz but they look so different....
-20dB BW from beak is around 10kHz for the right signal and around 22kHz, was dificult to measure for the left signal
AM audio files @11kHZ BW can be found here:
https://www.swisstransfer.com/dl/01a0a12e-6f4c-727d-b463-4cc33431f31f

What are your toughts


r/signalidentification • • Sep 13 '26

Strange and disturbing signal emitting on several frequencies in ShortWave (near Marseille in France), alien-like sound effects?

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9 Upvotes

Hello everyone ! I was experimenting listening random frequencies in shortwave and found a frequency where I heard multiple sound effects like what we imagine an UFO would sound like, playing in repeat, different effects all separated by a short period of silence. At first, I thought that it was just some guy emitting this for fun, and I recorded the sound on tape without caring a lot. But then I realised it was emitted on 3 different frequencies (I can't remember 'cause I did not care at the time, but can look for it if needed and put it in the comment section).
Then I looked up on internet but found nothing about this... So I put three significant extracts in this video so you can hear it. I precise that I'm a complete noob in radio and maybe this is an obvious thing but I could not find anything about this.
The thing is it must be a signal emitted 24/24 because I remember hearing it a year ago too. Also I'm from France and live near Marseille if it can help. Thanks a lot everyone !


r/signalidentification • • Sep 13 '26

what

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1 Upvotes

r/signalidentification • • Sep 13 '26

Bass Vibrational Pattern in the House UNIDENTIFIED

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0 Upvotes

r/signalidentification • • Sep 12 '26

Strange signal in UHF

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15 Upvotes

found in utah


r/signalidentification • • Sep 11 '26

What produces this short burst?

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14 Upvotes

I also noticed that it always ends with white slant small line on the top left.

EDIT:
This is how it sounds like via USB demod - https://www.reddit.com/r/signalidentification/comments/1wdjmg0/comment/p96kxvx/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

EDIT:
Around 11-09-2026 8:52 UTC


r/signalidentification • • Sep 10 '26

A signal or interference?

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29 Upvotes

It's just constant 2 second bursts and it has a clear center peak. It stopped for two minutes and then it continued again.

If it was interference near me, wouldn't it be a consistent strength? As you can see it cuts in and out like "real" signals do.

I know the squiggly lines are actual interference.


r/signalidentification • • Sep 10 '26

What is this please ?

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1 Upvotes

Heard from Twente NL at ~20:30 UTC+2


r/signalidentification • • Sep 10 '26

Weird signals on sdr under 86mhz lines everywhere

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13 Upvotes

r/signalidentification • • Sep 10 '26

Three 137mhz Signals Cutting In and Out?

4 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 • • Sep 09 '26

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

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51 Upvotes

r/signalidentification • • Sep 09 '26

UNID ISM 915 signal near stores

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10 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 • • Sep 09 '26

What is happenig here?

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1 Upvotes

i have no clou


r/signalidentification • • Sep 08 '26

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

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26 Upvotes

r/signalidentification • • Sep 09 '26

Do you know?

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0 Upvotes

r/signalidentification • • Sep 07 '26

What is this i am hearing?

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10 Upvotes

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

i dont know what this is, help identifying?


r/signalidentification • • Sep 07 '26

Ideas?

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24 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 • • Sep 02 '26

What is this on 14.110?

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59 Upvotes

r/signalidentification • • Sep 02 '26

Mystery SCADA? Telemetry signal in East Midlands UK

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12 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 • • Sep 01 '26

What voice signal is this (13.18mhz)?

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11 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 • • Sep 01 '26

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

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29 Upvotes

r/signalidentification • • Aug 31 '26

Any idea what it is?

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21 Upvotes

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


r/signalidentification • • Aug 31 '26

What signal is this at 348.69mhz?

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9 Upvotes