Shortwave Oddities and Unknown Signals, VOL. 1 (link for 2023 Collection in description) 

I would like to sincerely thank all the users who, watching the video, are leaving a comment with additional information, opinions and ideas on the various signals (as well as congratulations!). All this mass of information will be included in the oddities & unknown signals section of the web page, so as to offer the reader a more complete product. Along with the information, you will also have access to complete recordings of every single signal present in the various video volumes. I hope it will interest you and be a tool to consult for those of you who want to learn more.

0:50 was from a promotion for the new black ops game. The company bought some time to broadcast this via WRMI. I have a recording of this too.

If you're someone who works on Old shortwave radios you'll probably constantly hear "great day testing this is only a test"

I like the "dark ambient" sound of these recordings. The trumpet oddity part sounds like it could be a track on an early Black Lung album.

This is great. I wish we had more explanations. I just reignited my AR licence after 3 decades. As a kid I used to have an old military shortwave receiver valve set that I built into my wardrobe. I'd go in there and puzzle over stuff like this for hours on end. Nobody ever knew where I was, it was like I'd teleported to another planet. And then it was teatime and I'd magically reappear, as long as it was fish and chips or pie and mash, not brussels sprouts and cabbage.

I think most number stations were only there to confuse the other country's espionage services, to make their espionage more expensive, many people have to listen in on these frequencies every day. The real use of number could have been information about the waterheights in some remote canals or rivers.

Good video, I love it! Can't wait to see more from you.

very interesting, i havent heard most of these and ive heard quite a lot of them over the years! good video, keep it up!

Some of these are bangers.

On the second one I heard Okeechobee, Florida, which I believe is WRMI, Radio Miami International, on shortwave. 😊

2:04 this one would be interesting as a sample

Very interesting!

Very cool channel. Thank you for the effort you put into collecting/recording the material! It's nice when you can still find such great channels with interesting content at my age and learn something new there. Best regards

The trumpet oddity reminds me of the numbers station "drums and trumpets" supposedly originating from scotland

10:30 NATO letters 110% a pirate. The frequency choice is a very popular frequency for pirates to transmit on.

8:45 could of been simple telemetry from a weather balloon’s altitude. The tones could been wind speed

Letters oddity 2 is a pirate mocking a transmission from the USAF’s HFGCS system.

0:58 is WRMI, when the COD Black ops.

There's no mystery about what's the signal heard at 01:28, it was a fake Russian-themed number station broadcast over WRMI's frequencies programmed by the Call of Duty developers in order to promote the most recent Call of Duty launch. The reason behind being broadcast over WRMI (from Miami) is because WRMI is a commercial radio station, you can buy airtime on it, so that's why this fake number station was being broadcast there.

Hi Great video, really enjoyed it. Lots of possible jamming signals or frequency holding signals. Just for note the unknown 3690KHz is CW & reads … ?8 PRT QRV ?8 PRT is a call sign QRV is Q code for ‘Are you ready’ You can hear the faint reply so I guess it’s 2 CW hams having a QSO Hope this helps 73’s

UNKNOWN 452 could be a maritime radar station just like the very rare french station labeled "wop wop"

That doorbell; I’ve heard it before. Smart home I think.

Question for ya, so are all of these recorded clips/videos you've found or did you monitor any of these yourself? This is a pretty decent collection, haven't heard any of these! Here's some info/background on a few of these, and I hope they help you shed at least a little bit of light on them, at least some food for thought. On the 50mhz NFM data transmission, I found a NTIA activites report that explains what that is. NTIA or National Telecommunications and Information Agency are the folks that coordinate frequency allocation and use for the US Government, which the FCC doesn't do (they cover private and local/state level comms). The NTIC is now operating a secondary allocation of EESS (Earth Exploration Satellite Service) in the 40-50mhz range, and I'm willing to bet these transmissions are space borne radar sounders. On 458mhz, this is pretty much used for data of all types worldwide. It could be one of a hundred things from vehicle keyfobs, telemetry, wireless LAN, Bluetooth and even interference from another device like a flat screen TV. 3690khz-Definitely not a legit time signal station, that's in the 80 meter ham/amateur radio band, you can hear active CW/Morse Code going on. Why that time announcement is there, that is beyond me and was entertaining to hear lol. 11354khz-Last I checked, one of the worldwide commercial aviation communications in Alaska is a user of this frequency, so this could be anybody. Sounds like a tape loop to me, that's odd. Those HF aviation frequencies change all of the time, and I've heard the New York station running off unauthorized users before in the past while operating on an assigned frequency. 8237khz-This is smack inside a marine band (8195-8814) and good for hearing interesting conversations among fishing vessels. Tele tones, or DTMF (Dual Tone Multi Frequency) signaling is pure tone and zero data, so this could be signalling to turn on something or start a process. I'd work great as a jammer too, or just really pissing someone off. Could very well be a cheap channel marker too! True fun fact-two of the tones, 852 and 941hz are the same tones used for the EAS (Emergency Alert System) attention signal, played simultaneously and designed to be displeasing to the ear. That last polytone is possibly the most oddball one I have, wonder if it's just an attention grabber lol. The rest I haven't a clue! I've been an off and on shortwave listener for far longer than I care to admit, about 30+ years. I'm working with the web based SDR's, I'll have to try and monitor some of these myself! I'll check out your second video and see what I can offer on any of those. Hope you and anyone else finds my stupid wall of text informative and maybe entertaining lol.

the 3690KHz signal is just a HAM doing Morse code while tuning up and down a little with the big scroll knob all good Tx capable HAM radios have.

i have a hunch the multi tone ones are probably some way of sending data digitally, and the nato letters are for training, idk if it's for regular grunts, commanders or for some reason spies in training

Wait that first one.. "jiggaaaa"

At 6:20 The DTMF tones spell out 0000-1111-2222-3333 repeatedly. Perhaps a marker?

2:04 , This is almost musical. I have only the most introductory knowledge of data transfer but it almost sounds like it's multiplexing different data types, I have no clue though really.

Very interesting. The signals around 460 MHz, can you try to use a beam antenna for direction finding? it could also come from satellites.

Artifact #2 invokes Okeechobee Florida, though most of the announcement would seem to be in a foreign language.

It’d be great if we could have a new chapter of the Conet Project, if even in an unofficial capacity.

hello at 5.14 mn , the signal on 3690 khz is a morse code transmission between 2 amator radio ( this frequency is on amator radio bandwith ( ocwje de 8rjez )

the nato letters are quite common i think they originate from Edwards air force base and they usually have a weird callsign like popsicle i normally hear them on 11.175 and the polytones sound like the Japanese slot machine

462.611 is usa FRS channel 3. one doesnt need a licence to use it. ur very likely hearing a child holding their walkie talkie to their game thing. that or a person is flying a glider with their walkie talkie transmitting

Sounds like a Cavalry Bugle Call.

Last is someone who thought " oh yeah you want to tap my lines ?? Well listen to this !!"

the first voice is in the Serbian language 100%

Sounds like the Cuban HMO1 spy number station

👍🏆🇧🇷

I also caught a similar one to the altitude reading at 8:10 of your video back in 2019. The AMA were having a model airplane show a few miles from my house at the time so I’m guessing that’s where it came from because I caught it several times that day and after the show was over, I never heard it again until the next year when they had the show again. Here the video of the recording I made back then. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-FwsXFdVlTjU.htmlsi=sjyOkRn-EfC8u0HR

You should have included the dates for the examples. Not including the dates makes people think these are recent happenings; when in the fact the majority of shortwave's oddities and interesting things happened in previous eras. It's not common these days. These days the only real "oddities" are the ones everyone knows about and have existed for a while, or propaganda pirate stations involved with the Russian invasion of Ukraine.

Is it common for Russian shortwave stations to state their numbers in English?

Oh hey another video. Just watched it and I have something about say about those signals, although I know almost nothing about shortwave. "Russian Numbers Oddity", I don't think the language spoken in the background is Russian. I honestly don't know what it could be, but probably Czech, Slovak or some other Slavic language. "Unknown Digi Mode 50" reminds me of the sound that older modems used to emit when they're connecting to something, but I don't think that's it because they produce the sound through the speakers. Still pretty interesting. "Undetified Tele Tones" is probably a channel marker or some random jammer because it just repeats "1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4" in DTMF tones. "Ground Height Signal" could be a weather balloon that sends data in some exotic manner but sends the altitude in a synthesized voice. Thanks for the video, was pretty entertaining to watch it!

Russian numbers oddity - doesn't sound russian to me, more of a balkanian language. Altitude - sounds exactly like thermo or vario meter of a sailplane.

I need to save my money. Go buy a powerful mobile shortwave radio transceiver and go do fake numbers stations in random spots.

Yall ever wonder if any of these weird transmissios are aliens just fkn with us? Lol