[HN Gopher] Signal Identification Guide
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       Signal Identification Guide
        
       Author : fortran77
       Score  : 35 points
       Date   : 2021-12-12 18:32 UTC (4 hours ago)
        
 (HTM) web link (www.sigidwiki.com)
 (TXT) w3m dump (www.sigidwiki.com)
        
       | TonyTrapp wrote:
       | 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.
        
       | gugagore wrote:
       | The website appears to be having trouble. Here is a description
       | This wiki is intended to help identify radio signals through
       | example sounds and waterfall images. Most signals are received
       | and recorded using a software defined radio such as the RTL-SDR,
       | Airspy, SDRPlay, HackRF, BladeRF, Funcube Dongle, USRP or others.
        
       | lokimedes wrote:
       | On a whim I brought out my SDR tonight for a bit of low frequency
       | exploration. I found a wonderfully odd signal at 157 kHz and
       | decided to look it up on sigidwiki - only to discover that the
       | page was intensely unstable. Now, an hour later I saw this post
       | on the front page of HN, Fermi's exclusion principle must work
       | for hobbies as well it seems.
        
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       (page generated 2021-12-12 23:00 UTC)