[amsat-bb] Re: MMSSTV and ARRISat-1

31 Dec 2011

      Hi Zack,
It sounds like you don't have a clear enough signal from the satellite.  For a good picture, you will need to have  full-quieting FM reception.  How did the voice announcements sound, prior to the SSTV session?
On good pass earlier today, I copied this picture:  http://www.amsat.org/amsat/ariss/SSTV/uploads/6443.jpg  It was nearly S9 on the meter.  Just now there was a really low pass (maybe 5 degrees), and at most an S2 with the preamp turned on.  The audio was good enough to copy most of what was being said, and MMSSTV was able to trigger on the SSTV image, but all I got for a picture was a rectangle of multi-colored snow.  Same setup as the with the earlier picture.
You will have to adjust the receive frequency a bit to account for the Doppler shift on most passes.  That's just life with Satellites.
Greg  KO6TH
...
From: inservice2him@hotmail.com
To: zack.kd8ksn@hotmail.com; amsat-bb@amsat.org
Date: Fri, 30 Dec 2011 16:59:02 -0600
Subject: [amsat-bb] Re: MMSSTV and ARRISat-1
On the latest pass, only about 17 degrees I had some success with a photo.
It is in no way a clear photo but I can see call letters in the upper left hand side of the print. The rest of the pix seems to be that of a half globe or something like that...lots of "noise" present in photo.
To accomplish this result I had to use the "rit" to adjust.
Thanks for the help. I like to audio recorder idea. Tnx!
N0KK
...
From: zack.kd8ksn@hotmail.com
To: inservice2him@hotmail.com; amsat-bb@amsat.org
Date: Fri, 30 Dec 2011 14:57:31 -0500
Subject: [amsat-bb] Re: MMSSTV and ARRISat-1
I had a similar issue when I first started downloading SSTV, and if I recall correctly I believe it was because I had the input audio set way too high (I cranked it down to just about no audio to get a clear pic).  If you have downloaded pictures before from HF and have had success at your preset audio levels, then I doubt that is the issue.
Zack
KD8KSN
From: kp hpjr 
Sent: Friday, December 30, 2011 2:41 PM
To: zack.kd8ksn@hotmail.com ; amsat-bb@amsat.org 
Subject: RE: [amsat-bb] Re: MMSSTV and ARRISat-1
Zack and others.
Yes, audio feed is direct as with all digi modes I operate.
Just had a pass of ARRISat-1 of 45 degrees plus over head. The downlink into my M2 5 element yagi @ 35 degrees elevation was S-9 plus 10db. A very good  (great) signal.
2 times during the pass the SSTV was transmitted. During neither of them did the program initialize and copy anything. Partway through the 2nd transmission I forced it into RX Robot-36. All that occured was for it to stop after about 5 seconds. Again nothing decoded....frustrating to say the least. I'd like to get 1 photo...HI.
Using the exact same setting I have had several QSO's now on HF sending and receiving very clear photos.
Not sure what else to try.
N0KK, Kirk
...
From: zack.kd8ksn@hotmail.com
To: inservice2him@hotmail.com; amsat-bb@amsat.org
Date: Fri, 30 Dec 2011 07:48:57 -0500
Subject: [amsat-bb] Re: MMSSTV and ARRISat-1
Hi Kirk,
Like Greg said, ARRISat-1 is Robot 36. I also found that I received the 
clearest pictures when I ran the audio directly into the pc versus letting 
it pickup the audio from a speaker. I imagine you are probably already 
doing this.
73!
Zack
KD8KSN
-----Original Message----- 
From: kp hpjr
Sent: Wednesday, December 28, 2011 4:35 PM
To: amsat-bb@amsat.org
Subject: [amsat-bb] MMSSTV and ARRISat-1
GA,
All the talk about SSTV from this bird got me thinking I'd like to try!
I downloaded MMSSTV and installed.
What are the best settings to use in the setup page for decent copy of 
photos from ARRISAT-1?
I did copy pix on 14.230 after setup as a test run...but on last pass of 
ARRISAT, had wonderful copy of voice beacon but no pictures decoded.
So wonder what I might be doing wrong.
Any help appreciated.
Kirk, N0KK

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[amsat-bb] Re: MMSSTV and ARRISat-1

Greg D.