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Feel free to make comments about unidentified signals that you might know or anything else here.

Anonymous user #1

313 days ago
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Does ship radar penetrate houses 10 miles away?


153 days ago
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yeah it probs would

Anonymous user #2

304 days ago
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i need to know this mode , thanks guys

Anonymous user #3

240 days ago
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Just discovered this site. It is a fascinating topic of how we communicate efficiently, reliably and securely. I will be exploring the site very much. Very interesting. Thanks. 2020 August 17th 10:57 UTC

Anonymous user #4

227 days ago
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Genuinely awesome site, both in organization and content. Will take the mystery out of the odd collection of signals that have puzzled me for years when exploring the bands. Many thanks for your efforts!


150 days ago
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A very useful Database, many thanks.

I would like to see a Category for Electromagnetic Interference (EMIElectromagnetic interference / RFIa specific subset of electrical noise on the Electromagnetic interference (EMI) spectrum) signals added, please.

Such as HDMI (already in the database), switched mode power supply (a representative sample, or 2), Ethernet, central heating Boiler(Gas), TV emissions (LO, harmonics, etc), and so on.

It would make the identification of interference sources in my house a lot easier :-) Once I can work out how to do it I can provide samples, mostly unidentified as yet :-(

Regards, Ed


144 days ago
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Hello, I've captured a a new signal - at least to me it is - on UHFUltra High Frequency (300-3000 MHz). This was present for several days and has since disappeared. Please refer to this link at Vimeo for a sample. You may have to increase the volume. I'd like to get anyones thoughts on this.



87 days ago
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Not new just a channel marker

Anonymous user #5

44 days ago
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been hearing a narrow data signal on 6.780MHz for a few weeks. any idea. its mostly heard in north america. also, after dark in north america, 4.096 or so has a narow data transmission that sounds similar to a low pitch dolphin


44 days ago
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Do you have a recording?


44 days ago
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6780kHz definitely needs a sample/pic and more information.

4095.7kHz is the Desert Whooper. https://twit...704567304208
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