[amsat-bb] SSTV

[John Brier]

Hey Kevino,

99 percent of the time I am receiving with my Arrow antenna outside.
One time there was a telebridge in the middle of the night and I
parked my car on the top of a parking deck that had a good view of the
pass (at the time my girlfriend's deck) and left my Zoom H1 audio
recorder going. The quality was surprisingly good, even they were
using the 5 watt radio, not the more powerful Kenwood. I can't
remember if I left it in WAV or mp3, but it worked. I had a huge file
of course.

If you have a PC it should be able to handle multiple gigabytes even in WAV.

If I'm reading this site the standard WAV settings will get you a file
around 2.5 GB for eight hours:

http://www.audiomountain.com/tech/audio-file-size.html

Of course there are ways to automate/script recording at a specific
time. I know of at least one SDR program that can do it for sure (saw
a screenshot of it, can't remember which one)

73, John Brier KG4AKV

On Thu, Jul 13, 2017 at 6:35 AM, kevino z <z_kevino at hotmail.com> wrote:
> John,
> Do you do unattended recording by scheduling an app to record the pass? Or
> do you leave it recording for the whole time and then edit a humongous audio
> file? I have to work Thursday and was hoping to record in an unattended
> mode, and then come home and see what I got.
> The audio will be mono, so I assume recording at 44kHz mono, uncompressed is
> how you do it? What app do you use?
> Thanks,
> -Kevin (KK4YEL)
>
>
> No trees were killed in the sending of this message. However, a large number
> of electrons were terribly inconvenienced !
>
> On Jul 12, 2017, at 09:14, John Brier <johnbrier at gmail.com> wrote:
>
> I highly recommend recording the audio.
>
> That way if you have issues decoding during TX you can always replay to the
> decoder later. Also you can try different decoders and settings to see
> which produces the best image.
>
> I have more tips and info on this page on my website:
>
> https://spacecomms.wordpress.com/iss-sstv-reception-hints/
>
> 73, John Brier KG4AKV