[amsat-bb] SSTV

Ed Krome e.krome at comcast.net
Thu Jul 13 14:32:25 UTC 2017

HDSDR can be programmed in frequency and time for multiple unattended operations. It can save the data as full RF signal, IF or AF demodulated audio. 

Ed Krome   K9EK
Sent from my iPhone

> On Jul 13, 2017, at 10:18 AM, John Brier <johnbrier at gmail.com> wrote:
> 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
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