[amsat-bb] What happened to the ISS SSTV audio level?

[Hans BX2ABT]

I just had an 84 degree pass but even after enhancing the sound file no 
images could be decoded. What amazed me was the signal strength that I 
got with my Xpol 5 element beam: when the ISS came on it was full 
quieting. Never heard them so strong before, but then again, I never 
used a Xpol beam to receive the ISS.

Hope someone can contact the ISS before the weekend is over.

73 de Hans

BX2ABT


On 04/12/2019 10:11 AM, Patrick STODDARD (WD9EWK/VA7EWK) via AMSAT-BB wrote:
> Hi!
>
> I just had a 44-degree pass over central Arizona around
> 0130 UTC. One of the two pictures I copied came in at the
> middle of the pass, yet QSSTV would not decode the WAV
> file from my TH-D74 HT until I amplified the recording by
> 20dB using Audacity. Then I saw one really good picture,
> and an OK second picture from the transmission just before
> my LOS. The audio files from this pass, including the WAV
> files converted to 48kbps and with the 20dB amplification,
> are in the "201904-ISS_SSTV" folder in my Dropbox space:
>
> http://dropbox.wd9ewk.net/
>
> One more pass at 0300 UTC, with maximum elevation of 12
> degrees. Then I'm done until tomorrow morning, if I get
> breaks coinciding with ISS passes...
>
> 73!
>
>
>
>
>
> Patrick WD9EWK/VA7EWK
> http://www.wd9ewk.net/
> Twitter: @WD9EWK or http://twitter.com/WD9EWK
>
>
> On Fri, Apr 12, 2019 at 1:28 AM Hans BX2ABT via AMSAT-BB <amsat-bb at amsat.org>
> wrote:
>
>> Same here. Good, strong signals on a low pass, but QSSTV couldn't sync.
>> Got a partial image from enhancing the recorded audio.
>>
>> In the same pass they transmitted another image, but couldn't even hear
>> and see any SSTV, only a strong carrier.
>>
>> --Hans (BX2ABT)
>>
>>
>>
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