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Such a perfect page for nerd sniping. Too bad that I couldn't find a signal that I heard in the 90s on an FM radio and have never been able to identify. From wh
by TonyTrapp 5y ago
Such a perfect page for nerd sniping. Too bad that I couldn't find a signal that I heard in the 90s on an FM radio and have never been able to identify. From what I can remember, I didn't hear it on other FM radios, which makes it even more mysterious. In frequency ranges where there was no radio station transmission, I didn't just hear the typical static noise but also some strangely melodic tones changing frequency multiple times a second. The tones weren't very pure like most examples on the page, but with lots of strange harmonics / distortion.
- AnonymousPlanet 5y agoYour description matches this https://www.youtube.com/watch?v=wmNrOwFeXsA https://www.youtube.com/watch?v=wmNrOwFeXsA It could be heard just at the edge of the normal FM range. Most FM radios cut off before you could reach the frequency, however. The signal was used for something like an early pager service. The early receivers were rather large, making them only suitable for cars. The service was also very expensive, so pretty much only businesses used it for management or sales people.
- TonyTrapp 5y agoYes, I think that's it! It certainly was more distorted than in this capture but it matches the "melody" that I remember. Mystery solved 25 years later. Thanks :)
- noman-land 5y agoI love this thread.