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Loggings => Other => Topic started by: ETM71 on March 17, 2012, 0204 UTC

Title: Strange (...to me) Sound 6385usb/am 0155+ 03/17/2012
Post by: ETM71 on March 17, 2012, 0204 UTC

Strange (...to me) Sound 6385usb/am 0155+ 03/17/2012

strg_snd_6385u_0155utc_20120317.mp3 (http://www.4shared.com/mp3/ArfFWzvj/strg_snd_6385u_0155utc_2012031.html?refurl=d1forum)

The "phaser" effect gets more pronounced toward the end. I'm sure someone can ID it. Just curious.

Still there as of 0206utc.

Thanks.

Title: Re: Strange (...to me) Sound 6385usb/am 0155+ 03/17/2012
Post by: Token on March 17, 2012, 0245 UTC

The sound you are hearing is a digital modem, specificaly it is STANAG 4285.

S4285 can be BPSK, QPSK, or 8PSK.with baud rates form 75 to 3600.  The vast majority is encrypted.  Sigmira can be used to demodulate the signal if it is not encrypted.

T!

Title: Re: Strange (...to me) Sound 6385usb/am 0155+ 03/17/2012
Post by: ETM71 on March 17, 2012, 0254 UTC

Thanks Token.