Re: Fwd: Re: Confirmed KMS-4 Radio Reception on UHF

From: Scott Tilley via Seesat-l <seesat-l_at_satobs.org>
Date: Tue, 09 Feb 2016 23:16:11 -0800
Hi All

I'm not so sure after some further analysis.

I suspect the signal I copied could be Metop-A, 29499 as I just copied 
it again at the predicted time for Metop-A during its pass around 11pm PDT.

I would give my previous reports much suspicion based on this observation.

Begin passes prediction from 18:13:59 2016.02.09 to 02:13:59 2016.02.10 PDT
______________________________________________________________________________________________________________________
satellite______________|int. des.___|number|el._|sat. 
mag._|rise________________|set_________________|data age|pass___|
METOP-A                 2006-044A     29499   22        6.5 19:31:03 
2016.02.09  19:44:44 2016.02.09      0.3    13.7
KMS 4                   2016-009A     41332   32          ? 19:35:12 
2016.02.09  19:46:02 2016.02.09      0.1    10.8
KMS 4                   2016-009A     41332   21          ? 21:08:54 
2016.02.09  21:19:19 2016.02.09      0.2    10.4
METOP-A                 2006-044A     29499   70        7.2 21:09:48 
2016.02.09  21:25:14 2016.02.09      0.3    15.4
METOP-A                 2006-044A     29499   11        8.7 22:52:41 
2016.02.09  23:04:28 2016.02.09      0.4    11.8
______________________________________________________________________________________________________________________

Regards,
Scott





On 2/9/2016 11:01 PM, Satcom via Seesat-l wrote:
>
>
>
>
> From: Satcom <john_at_satcom.freeserve.co.uk>
> To: Scott Tilley <sthed475_at_telus.net>
>
> If it helps , I played Scotts wav file through SDR sharp....the signal
> id definitely there , and pretty strong.
> Here is a grab from the visualisation.
>
> https://drive.google.com/file/d/0B4g1kKs0cR7ZNFlwenlyazBvYUE/view?usp=sharing. 
>
>
>
> My guess.... Scott is spot on with his assumption that this is KMS-4
>
> Regards
>
> John
>
>
>
>
> On 10/02/2016 05:35, Scott Tilley via Seesat-l wrote:
>> Further to my last, I have copied a second pass with timings that
>> closely match Spacetrack TLEs.
>>
>> The signal is weak and experiences deep fades with obvious modulation.
>> Hear the recording below to form you're own opinion.
>>
>> The signal seems to have drifted up in overall frequency since last 
>> orbit.
>>
>> Here's a 75MB wav file of the entire pass that anyone can hear. I
>> screwed up making a wideband recording due to unfamilaritity with the
>> software but I hope it helps with the analysis.  It's just demodulated
>> audio not the raw 190KHz bandwidth.  It starts off uninteresting but
>> gets very loud with signal a few minutes in around (6-7 minutes) and
>> near the end of the pass.  Best viewed with something that can visualize
>> the signal.
>>
>> https://dl.dropboxusercontent.com/u/15916951/Record0_20160210_050859.wav
>>
>> Regards,
>> Scott
>>
>> _______________________________________________
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>> http://mailman.satobs.org/mailman/listinfo/seesat-l
>>
>
>
>
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Received on Wed Feb 10 2016 - 01:16:46 UTC

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