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ARS Riyadh Yemen excile radio on 11936v kHz and - probably - Iranian Sirjan site jamming up to 11959v kHz  View Printable Version 
Wednesday, September 25 2024

HCDX


SAUDI ARABIA 11936.207 kHz approx. peak of Riyadh's carrier
on upper side flank, at 14.46 UT on Wed Sept 25,
S=9+35dB noted on SDR remotedly in Doha, Qatar, ME.

73 wolfie df5sx


From: Zacharias Liangas via groups.io
Sent: Wednesday, September 25, 2024 1:21 PM

Subject: Re: [WOR] ARS Riyadh Yemen excile radio on 11936v kHz and -
probably - Iranian Sirjan site jamming up to 11959v kHz

What I can understand from the waterfall and spectrum analysis

Reception via TWR kSDR Cyprus

This is clearly a carrier shifting upwards to around 8-9 kHz. The
modulation dissipates in proportion with the carrier to a max length of
18kHZ reaching to around 11952KHz. The spectrum analyzer shows that the LSB
side has less modulation than he USB part

Today the signal 25/9 1z+ is centered on 11936.159 kHz. It is highly
variable to a range of ±100HZ More zoom could help but the

Here is the waveform as tested in an audio program : 13 HZ for the marked 1
second!

I posted this info also on the page
https://zachs-radiopage.blogspot.com/2024/09/comenting-on-problem-happened-in-sanna.html
and hope laeter to add more info if possible

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40 mhz experimental band  View Printable Version 
Wednesday, September 25 2024

HCDX
EI2IP, Ireland, logged at 15:47 UTC, Sept. 24, in FT8 mode on 40.680 mhz. Signal Strength -18 DB and -1.1 DT. RX: Yaesu FT-847 and 5 ele 6M Beam. Bill Smith, Douglas, MA.
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ARS Riyadh Yemen excile radio on 11936v kHz and - probably - Iranian Sirjan site jamming up to 11959v kHz  View Printable Version 
Tuesday, September 24 2024

HCDX
SAUDI ARABIA 11936.143+ kHz Sept 18 at 1806 UT, very rapid

chirping vs Yemen service, S=9+20dB. Jamming from Iran? UTwente flails to

lock onto when tuned to 11935 kHz, but finally stix here when tuned to

11936.00 kHz.

(Glenn Hauser-OK-USA, via NASWA Electronic Flashsheet #1170 Sept 22)

11936.173 approx. kHz, wobbling carrier and upper side band signal of Yemen

excile radio Riyadh in Arabic. S=9+35dB signal into Doha Qatar SDR unit

remotedly at 15.20 UT on Tue Sept 24, hit heavily by probably Iranian

jamming signal - 23 kHz wideband - up to 11959.4 kHz - from Sirjan SW center?

[selected SDR options, span 12.5 kHz RBW 15.3 Hertz]

(wb df5sx, wwdxc BC-DX TopNews & hcdx Sept 24)
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ARS Riyadh Yemen excile radio on 11936v kHz and - probably - Iranian Sirjan site jamming up to 11959v kHz  View Printable Version 
Tuesday, September 24 2024

HCDX
But gone suddenly at 20:57:45 Walt

On Tue, Sep 24, 2024 at 8:57 PM Volodya S <canswl@gmail.com> wrote:

> I see and hear the same in Masset. Very strong at 20:56. The chirping
> extends up to 11955 kHz, but strongest between 11936 and 11940. 73, Walt
>
> On Tue, Sep 24, 2024 at 3:39 PM Wolfgang Bueschel via groups.io
> <df5sx.p11=gmx.de@groups.io> wrote:
>
>> SAUDI ARABIA 11936.143+ kHz Sept 18 at 1806 UT, very rapid
>>
>> chirping vs Yemen service, S=9+20dB. Jamming from Iran? UTwente flails to
>>
>> lock onto when tuned to 11935 kHz, but finally stix here when tuned to
>>
>> 11936.00 kHz.
>>
>> (Glenn Hauser-OK-USA, via NASWA Electronic Flashsheet #1170 Sept 22)
>>
>>
>>
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ARS Riyadh Yemen excile radio on 11936v kHz and - probably - Iranian Sirjan site jamming up to 11959v kHz  View Printable Version 
Tuesday, September 24 2024

HCDX
I see and hear the same in Masset. Very strong at 20:56. The chirping
extends up to 11955 kHz, but strongest between 11936 and 11940. 73, Walt

On Tue, Sep 24, 2024 at 3:39 PM Wolfgang Bueschel via groups.io <df5sx.p11=
gmx.de@groups.io> wrote:

> SAUDI ARABIA 11936.143+ kHz Sept 18 at 1806 UT, very rapid
>
> chirping vs Yemen service, S=9+20dB. Jamming from Iran? UTwente flails to
>
> lock onto when tuned to 11935 kHz, but finally stix here when tuned to
>
> 11936.00 kHz.
>
> (Glenn Hauser-OK-USA, via NASWA Electronic Flashsheet #1170 Sept 22)
>
>
>
> 11936.173 approx. kHz, wobbling carrier and upper side band signal of Yemen
>
> excile radio Riyadh in Arabic. S=9+35dB signal into Doha Qatar SDR unit
>
> remotedly at 15.20 UT on Tue Sept 24, hit heavily by probably Iranian
>
> jamming signal - 23 kHz wideband - up to 11959.4 kHz - from Sirjan SW
> center?
>
>
>
> [selected SDR options, span 12.5 kHz RBW 15.3 Hertz]
>
> (wb df5sx, wwdxc BC-DX TopNews & hcdx Sept 24)
> _._,_._,_
> ------------------------------
>
>
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