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

[Patrick STODDARD (WD9EWK/VA7EWK)]

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)
>
>
>