ISS SSTV EVENTs 2-3 April and 11-14 April !

Discussion in 'Satellite and Space Communications' started by IW2BSF, Mar 28, 2018.

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  1. K7WDO

    K7WDO Ham Member QRZ Page

    This would be one of the better indoor shots - 50 degree pass around TCA using a FT-857 & M2 2M4 yagi aimed by hand. A good image like this is usually down to timing (30 degree pass or higher with SSTV kicking in around TCA) and a decent antenna to give you a little fade margin. SSTV images from the ISS, all from the comfort of dad's living room.

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  2. K3RLD

    K3RLD Ham Member QRZ Page

    QSSTV + direct recorded wav

    Robot36 + audio coupled
    Last edited: Apr 13, 2018
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  3. KD0KZE

    KD0KZE Ham Member QRZ Page

    One of my better ones, from the pass just now (ending approx. 6:40 pm central time, April 13). Pretty good for a vertical:

    Last edited: Apr 14, 2018
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  4. WD9EWK

    WD9EWK Ham Member QRZ Page


    More pics from passes around midday here in Phoenix. I went to a city park, and had two passes at 1835 and 2012 UTC. First, the two pictures from the 1835 UTC pass, which went directly overhead:



    The second picture above, the "9/12" picture, was the last one I needed to have a complete set of the 12 pictures being sent from the ISS.

    The later pass, at 2012 UTC, had two more:



    The first of these two started coming in about 10 seconds or so after AOS, as the ISS reached only 1 degree elevation. Other than the multi-color static across the top of the picture, it came in nicely. The later pass only reached 12 degrees elevation, but the strong signals from the Kenwood radio in the Russian part of the ISS - along with the RF-quiet park I was in - helped with these pictures.

    I now have all 12 pictures, but some of them have the static noise in them. I still have two more passes tonight to get more pictures, and I'm hoping I will get some better pictures to round out my collection for this activity. There may be a chance for more pictures during one pass tomorrow morning. Otherwise, it has been fun to have a few days with the SSTV transmissions.

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  5. KC8VWM

    KC8VWM Ham Member QRZ Page

  6. K3RLD

    K3RLD Ham Member QRZ Page

    Here's another interesting comparison (both antennas in the same exact location, both coax lines about 30ft long, both audio files decoded with QSSTV):

    A) 1/4 wave ground plane (4 radials), RG58, RTL-SDR, GQRX Controled by Gpredict:

    B) DIY Eggbeater, RG8X, TM-D710G, attenuating speaker cable, Audio-Recorder
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  7. WD9EWK

    WD9EWK Ham Member QRZ Page


    One OK picture, and most of another picture, from a 15-degree pass at 0106 UTC. This time, working from my back yard, I have to deal with more noise when the ISS is coming from the north or northwest, and whenever it is below 8 to 10 degrees elevation. The first picture started not long after AOS:


    The second one came in when the ISS was near the midpoint of the pass:


    Still using the TH-D74/Elk combination to record the signals, then decoding on a laptop with RX-SSTV. One more pass in just over an hour to wrap up the night.

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  8. WD9EWK

    WD9EWK Ham Member QRZ Page


    And two more pictures from the back yard during the 0242 UTC pass, to wrap up the day of SSTV. I saw the ISS passing by from about the midpoint of the pass until just before LOS. The two pictures:



    Same setup as with the other passes this week... TH-D74/Elk to receive and record the audio, then decoded with RX-SSTV.

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  9. IW2BSF

    IW2BSF Ham Member QRZ Page

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  10. WD9EWK

    WD9EWK Ham Member QRZ Page


    Almost forgot to post the two pictures I received on Saturday morning. I had gone out to the DM54/DM55 grid boundary in eastern Arizona, along I-40 and old US-66 near Petrified Forest National Park. The last SSTV pass over North America around 1743 UTC, and I was able to get two pictures.



    Other than some power-line noise I heard as I received and recorded these pictures, decent signals from the ISS. I used the same setup to receive and decode the pictures - TH-D74 & Elk log periodic to receive the pictures, RX-SSTV to decode them.

    I received all 12 pictures from this event, something I've never done with past ISS SSTV events. The breakdown on how many copies of each picture I received:
    • Received only once: 1, 9, 10
    • Received twice: 2, 11, 12
    • Received 3 times: 4, 5, 6, 7, 8
    • Received 4 times: 3
    I will put all of my pictures, along with the recordings from my TH-D74, in my Dropbox space shortly.

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