Using a RTL SDR Dongle to receive pictures from the ISS

Discussion in 'Amateur Radio News' started by VK7HH, Aug 1, 2021.

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  1. VK7HH

    VK7HH Ham Member QRZ Page

    Did you know the International Space Station (ISS) periodically sends SSTV (slow scan television) images over the air? You can decode them too using an RTL SDR software defined radio dongle which is around $30-$50. A simple antenna is all that is needed.

    KO4MAQ, VU2EAF, K4VTE and 10 others like this.
  2. KA9JLM

    KA9JLM Ham Member QRZ Page

    The V3 is way cool. :)
    M1WML likes this.
  3. K4VMG

    K4VMG QRZ Lifetime Member #302 Platinum Subscriber Life Member QRZ Page

    Excellent watch, thank you
    M1WML and VK7HH like this.
  4. IU4BIP

    IU4BIP Premium Subscriber QRZ Page

    Many thanks, i’ll try with my new ic-705, fantastic receiver.
    M1WML and VK7HH like this.
  5. KA8VNG

    KA8VNG Ham Member QRZ Page

    Been decoding SSTV since the 80's with a Robot 400 & then modified for 36 sec. B & W. Also used some surplus Fax drum machines HF Fax using the old thermal paper. How times have changed !!!
    KF4ZKU, M1WML and VK7HH like this.
  6. VK7HH

    VK7HH Ham Member QRZ Page

    I also have an Airspy that I acquired after this video was made. It's pretty good too, but more expensive
    M1WML likes this.
  7. VK7HH

    VK7HH Ham Member QRZ Page

    Awesome, SSTV is sent fairly regularly on the ISS now, so the next time they schedule it to be sent, give it a go!
    M1WML likes this.
  8. M1WML

    M1WML Ham Member QRZ Page

  9. DO1FER

    DO1FER Ham Member QRZ Page

    Thats another good way to decode the SSTV signal of the ISS. The most problem is the frequency shift, to get the pictures completly. So there is to change the frequency within the transmission from -10 kHz (AOS) to the Center Frequency (TCA) and up to +10 kHz (LOS). Or in another words the time when the ISS is approaching, is in the center above of the receiver and leaves then the area of the receiver. The typical things which are important for every satellite operations. To the used antenna, I think it was good enough. In my experience the best timeframe for receiving is about 6 minutes long. I used a small vertical too.
    M1WML likes this.
  10. KY4K

    KY4K Ham Member QRZ Page

    I used the radio in the car and Robot 36 app on my phone and it worked great..... They are doing SSTV again Aug 6 - 7 if you want to try it.
    KF4ZKU, M1WML and VK7HH like this.

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