RE: [multipsk] Unknown Digital Modulation around 390khz


Nov 10, 2012

 


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#15468 Nov 10, 2012

Hi all,

I spent few times trying to decode a strange digital modulation, but I didn't find it.

Can you help me to recognize this modulation?



I post a short wave file in Files folder called "Unknown Digital Modulation Around 390khz"



Thanks to all



Alessandro



P.S. More info for my reception:

I received this modulation from Italy (center of Italy) I used a IC-R75 with active Loop Antenna (ALA1530+)

This Signal transmits all day.



Bye



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#15469 Nov 10, 2012

Looks like a carrier with lsb multi-tone/bart head signal. Maybe navigationor LF comms signal?J.Clark From: alessandro.pasquiSent: Saturday, November 10, 2012 5:20 PMTo: multipsk@yahoogroups.comSubject: [multipsk] Unknown Digital Modulation around390khz



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#15470 Nov 10, 2012

Hi,

I uploaded a short video of my waterfall of this transmission.

I received in LSB and the number on the top is the frequency in khz.

below the link



www.4shared.com/video/P-uFN8RF/VID-20121111-00000.html



Bye

--- In multipsk@yahoogroups.com, "J.Clark" clarkj@...> wrote:

>

> Looks like a carrier with lsb multi-tone/bart head signal. Maybe navigation or LF comms signal?

> J.Clark

>

> From: alessandro.pasqui

> Sent: Saturday, November 10, 2012 5:20 PM

> To: multipsk@yahoogroups.com

> Subject: [multipsk] Unknown Digital Modulation around 390khz

>

>

> Hi all,

> I spent few times trying to decode a strange digital modulation, but I didn't find it.

> Can you help me to recognize this modulation?

>

> I post a short wave file in Files folder called "Unknown Digital Modulation Around 390khz"

>

> Thanks to all

>

> Alessandro

>

> P.S. More info for my reception:

> I received this modulation from Italy (center of Italy) I used a IC-R75 with active Loop Antenna (ALA1530+)

> This Signal transmits all day.

>

> Bye

>



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#15471 Nov 10, 2012

Do you live near an airport?  Can you make a recording in AM?

From: alessandro.pasqui alessandro.pasqui@...> To: multipsk@yahoogroups.com Sent: Saturday, November 10, 2012 7:00 PM Subject: [multipsk] Re:Unknown Digital Modulation around 390khz

 Hi,

I uploaded a short video of my waterfall of this transmission.

I received in LSB and the number on the top is the frequency in khz.

below the link



www.4shared.com/video/P-uFN8RF/VID-20121111-00000.html



Bye

--- In mailto:multipsk%40yahoogroups.com, "J.Clark" clarkj@...> wrote:

>

> Looks like a carrier with lsb multi-tone/bart head signal. Maybe navigation or LF comms signal?

> J.Clark

>

> From: alessandro.pasqui

> Sent: Saturday, November 10, 2012 5:20 PM

> To: mailto:multipsk%40yahoogroups.com

> Subject: [multipsk] Unknown Digital Modulation around 390khz

>

>

> Hi all,

> I spent few times trying to decode a strange digital modulation, but I didn't find it.

> Can you help me to recognize this modulation?

>

> I post a short wave file in Files folder called "Unknown Digital Modulation Around 390khz"

>

> Thanks to all

>

> Alessandro

>

> P.S. More info for my reception:

> I received this modulation from Italy (center of Italy) I used a IC-R75 with active Loop Antenna (ALA1530+)

> This Signal transmits all day.

>

> Bye

>



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#15474 Nov 11, 2012

Hello Alessandro,  Interesting digital unknown mode but I don.t know it. At 390 KHz the goal must be to broadcast at more than local distance.  73Patrick    De : multipsk@yahoogroups.com [mailto:multipsk@yahoogroups.com] De la part de J.ClarkEnvoy. : dimanche 11 novembre 2012 00:08. : multipsk@yahoogroups.comObjet : Re: [multipsk] Unknown Digital Modulation around 390khz


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