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

From: Satcom via Seesat-l <seesat-l_at_satobs.org>
Date: Wed, 10 Feb 2016 07:51:24 +0000
If it does turn out to be Metop-A , its an understandable mistake Scott.
Better to have tried and failed than failed to try!
Plus it helps others to illiminate possible contenders.




Best wishes

John





On 10/02/2016 07:41, Scott Tilley via Seesat-l wrote:
> Sorry I meant PST not PDT in the post below.
>
> s
>
> On 2/9/2016 11:16 PM, Scott Tilley via Seesat-l wrote:
>> 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
>>>>
>>>> _______________________________________________
>>>> Seesat-l mailing list
>>>> http://mailman.satobs.org/mailman/listinfo/seesat-l
>>>>
>>>
>>>
>>>
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-- 
Best wishes

John

PP Support

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Received on Wed Feb 10 2016 - 01:52:02 UTC

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