[Spooks] p o l y t o n e

Sun, 27 Jul 2003 15:25:49 +0200

At 12:44 27.07.2003 +0200, [email protected] wrote:

Hi Ary, hi Patrice,

the signal is not Crowd36, it's actually a 12-tone
Piccolo signal used by British MIL. The signal appears
to be very wide simply because the recording was quite
overloaded. The true bandwidth of this signal is only
some 250Hz, while Crowd36 would show a bandwidth of
approximately 1400Hz.

Best regards

-- Leif --

>Hello Pat,
>
>I listened to your sound sample. The signal is a 32-tone MFSK mode (also 
>called
>CROWD36) and is used by Russian diplo/military/intel stations including M42.
>These stations are sometimes on the air for hours.
>
>XPerta recognizes some of the tones and decodes them but it doesn't decode the
>whole message.
>
>Regards,
>
>Ary
>
>
> >Visit http://mailman.qth.net/mailman/listinfo/spooks to unsubscribe from 
> this list
> >
> >05283.0    unid     2127 apparent polytone station in progress (does not
> >seem like natural noise or jammer, still on at 2310 !! USB 26/07 (PP1)
> >
> >Xperta decode gives
> >
> >Sound file: 5283.wav
> >Beginning: 0.000
> >End: 120.000
> >Thresold of acceptance: 0.15
> >Time step: 3.17
> >7>9>>55_8_R_7>>565>995977_8>56_R7_R766_688599987689_697>6555
> >>>_6697777_88>>_599_85>7865_R>59_R66___R_>966>77_R669_67_877
> >69_>7999_>>8>>_8>>>>>>>_6_6958>869>76_R99R7>788R_558868>68>>
> >_R_9_8_88_>99_66>56>>89_R6>>988_>889999>>__6_R____8788668_R_
> >R_>_R_>8_7_>>_6956_788_R5_R>7>7_R98__9_R>_5__9_>767_6959_66R
> >_>__R967>>>>_8>__875_998878_9_R_>_R_66_R_>96>>6_R5>>89557799
> >_957799>>99>_R97576_66_89_>_>99677__7866_RR665889599558>>_5_
> >etc etc etc etc (short wav clip available 11025 Hz 8 bit monoat my site)
> >
> >Pat near Paris, icom r75
> >ute.wizzard.free.fr

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  | ********************* Leif Dehio *********************|
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