Recent comments

  • 8 August contact to Youngsters on the Air (YOTA) !   14 weeks 6 days ago

    I think Paolo just misspoke when he included the "I" in the call sign. Several of the ISS call signs end in "ISS" but the US call suffix is only "SS".


  • 8 August contact to Youngsters on the Air (YOTA) !   15 weeks 8 hours ago


    I think NA1SS was used since the US has a third-party traffic agreement with the UK when the UK stations are using call signs with GB special-event prefixes (except for GB3 prefixes). GB17YOTA would fall squarely within this agreement, so that is why I could see the reason for using the NA1SS call sign yesterday. If everyone who talked to NA1SS had a ham license, the US FCC would not consider that "third-party traffic", since they could have talked to NA1SS with their own call signs. I don't know if the UK's Ofcom shares the same opinion on what is or isn't considered "third-party traffic".


    Patrick WD9EWK/VA7EWK
    Twitter: @WD9EWK or

  • 8 August contact to Youngsters on the Air (YOTA) !   15 weeks 17 hours ago

    strange ......Paolo used for this contact to UK the callsing american NA1ISS ! 73

  • 8 August contact to Youngsters on the Air (YOTA) !   15 weeks 1 day ago

    FAULT on Ericsson handy radio !

    on the pass at 20:21 UTC very strong signal (use the Kenwood radio in russian module ) on 145.800 and NO hamtv video !

    here my video:

    best 73 de IW2BSF

  • 5 august ISS space station contact to school in Texas USA !   15 weeks 3 days ago

    in my web site the 2 contacts .... and the video of 5 august here:

  • 5 august ISS space station contact to school in Texas USA !   15 weeks 4 days ago

    Heard astronaut PAOLO NESPOLI OR4ISS talking to students "Frontiers of Flight Museum/ Moon Day" in Dallas, Texas via ON4ISS in Belgium whilst overlooking the river Exe estuary in Topsham/UK. Good strong signal using THD74 HT + Telescopic antenna 18:02 UTC.

    Participants will ask as many of the following questions as time allows:

    1. Abby, age 9: How long did it take for the Space Station to be built?

    2. Kimber, age 12: Does the change in gravity affect a person’s heart rate and length of sleep?

    3. Reese, age 13: How do the experiments on the Space Station help us overcome the challenges humans will face on the journey to Mars?

    4. Nathaniel, age 11: Does electricity work differently in space than on Earth?

    5. Adam, age 10: Are there any plans to reduce, recycle, and even reuse the space debris orbiting Earth?

    6. Seher, age 7: How do you fly the Space Station?

    7. Lucia, age 13: Will you be able to see the solar eclipse on August 21st in space?

    8. Max, age 12: What is it like to live in micro-gravity?

    9. Mateo, age 11: Do you have dreams and how do you feel after waking up?

    10. Lilly, age 7: What was the most surprising experiment you have done on the Space Station?

    11. Leo, age 9: What language do you speak on the Space Station?

    12. Alyssa, age 9: Have you ever been sick in space?

    13. Johan, age 6: What has been your best experience as an astronaut?

    14. Lauren, age 11: What did you study in school to help you become an astronaut?

    15. Eunice, age 9: Are your favorite foods in space the same as your favorite foods on Earth?

    16. Ariel, age 6: Why does your spacecraft heat up coming back down to Earth but not while launching into space?

  • 1 and 5 August contact to schools by italian on ISS (IZ0JPA) Nespoli on ISS !   16 weeks 1 day ago

    my video on the complete passing of 1 august with Nespoli to german scout

  • ISS Radio Report   16 weeks 6 days ago

    Here is the latest information posted on the site. Lets hope they can find a solution to the problem soon.

    Packet Module Status
    July 25, 2017

    ARISS has received several reports stating that the packet system on ISS is down. Here is what we know and our current forward plan.

    The packet system in the Columbus module started to act up late last week, sending only a beacon. The ARISS team requested a power recycle by the crew, and with that power recycle, the packet system appears to have stop functioning completely. Note that this unit has been on-orbit for 17 years. It was launched on the STS-106 Space Shuttle Atlantis mission in September 2000 and was built, tested and certified for flight about 20 years ago.

    The ARISS team has had some extensive discussions on the way forward. We would first like to do some additional troubleshooting with the existing packet module. It will take some time (weeks) to develop troubleshooting procedures, get the procedures approved by NASA and then conduct the tests with the crew. This includes an additional power cycle. The turnaround time is much longer than usual because a new crew will soon be arriving on ISS. The current crew is focused on the new crew arrival and there will be about a one- to two-week transition after the new crew arrives. On the positive side, one aspect of our troubleshooting—a second power cycle—will occur automatically because ARISS is shut down during crew docking and turned on afterwards. However, there will be more to our troubleshooting than just the power cycle.

    We have some additional plans with alternative solutions, but those are currently being discussed and prioritized within the ARISS team. All solutions will require international ARISS team coordination, additional procedures and crew interaction. People who have carefully followed ISS operations know that crew time continues to evolve with the more extensive research that is occurring on-board. Suffice it to say, it will take longer than what it has taken in the past to work through this issue.

    The above information is to make sure that ARISS properly sets expectations on how long it will take to resolve this. At this point, expect a few months with no ARISS packet.

    As you all can see, deploying the Interoperable Radio system that is currently under development by ARISS has become even more critically important. The ARISS team is laser focused on getting that system developed and deployed. We are conducting a final design review with NASA on this system next week. But we cannot get to the finish line without your help. If you can, please consider a donation to the ARISS radio fund by clicking on the ARISS donate button on the ARISS web page ( or the AMSAT web page ( All donations, large and small are appreciated.

    On behalf of ARISS, we thank you for your sustained interest and support of our program.


    Frank H. Bauer, KA3HDO
    ARISS International Chair

  • ISS Radio Report   17 weeks 1 day ago

    30 minutes ago
    Nothing heard over ohio

  • ARISS SSTV Commemorative Activity Coming Soon (July 2017)   17 weeks 2 days ago

    Thanks to the ARISS team, the ISS Fan Club Team, the ISS crew and others for making this an amazing event !
    It'll be fun to see how many submitted all 12 images, a full sweep!.
    73, Umesh K6VUG

  • ARISS SSTV Commemorative Activity Coming Soon (July 2017)   17 weeks 2 days ago

    Merv, I hope you managed to receive the final image. I just received my elusive final image so I have now managed to receive all 12 images over the duration of the event.


    Shane VK4KHZ

  • ARISS SSTV Commemorative Activity Coming Soon (July 2017)   17 weeks 3 days ago

    HELLO again and a big thankyou to one and all that were able to let us Download SSTV from ISS so far here in Australia I have 11 out of the 12 only need number 8 now there has been many double's but with the Extra time just maybe this time we will get the full 12 ..Each pass have been very good big signals and most of the time SSTV has been on its 60 s. cool off time at the start of the pass so I was able to get very few part Downloads!
    What I have here is a Kenwood TM-V-71A with a VHF Yagi and a VHF vertical with both antennas linked DIY interface ===FT847 with a 80m di/pole and a EGG beater also linked !
    Thanks again is there going to be an AWARD of QSL this time ??
    VK4EM Merv........

  • ARISS SSTV Commemorative Activity Coming Soon (July 2017)   17 weeks 3 days ago

    The pass just gone over at 21:19 UTC was start of numerical sequence again images #1 & #2 see my tweet

    Some of the transmissions breaks are not all the same as posted by others on twitter with some experiencing 5-6 mins in between.

  • ARISS SSTV Commemorative Activity Coming Soon (July 2017)   17 weeks 3 days ago


    Glad you managed to snag all of them! I am still waiting for #1.

    Your upcoming pass at 21:22 utc should have #6 and #7 coming up.
    Which means your last low elevation pass this morning early your time (4:40) was most likely around #9.

    Hope you have fun!

  • ARISS SSTV Commemorative Activity Coming Soon (July 2017)   17 weeks 3 days ago

    From my QTH Exeter/UK IO80gr I have averaged 1-2 partial + 2 full clean images including full same repeated image from the previous pass. With total of 13 good high degree passes (13 THD74 microSD recordings) to date 4 per night (5 first night) over 3 nights I've downloaded all 12 full images using TH-D74 HT + Arrow-2 Antenna.

  • ARISS SSTV Commemorative Activity Coming Soon (July 2017)   17 weeks 3 days ago


    Measuring the SSTV TX timings, I see that the time from the start of one TX to the start of the subsequent TX is 4:10.5, which includes the 2:00 pause between transmissions.

    Running the math and comparing to the picture numbers I get when the ISS is overhead, I suspect that when cycling from 12 back to 1, the delay is not 2 minutes, but 2.5 minutes. The pattern then works out nicely against my modeling.

    Of course, I could have it all wrong...

    Here are my predictions:


  • ARISS SSTV Commemorative Activity Coming Soon (July 2017)   17 weeks 4 days ago


    I receiving SSTV from the ISS each night about 5 passes per day. Now is third day od SWL.
    The collection of images is big, however I didn't recive images 2, 3 and 4, whereas others I have received up to five times.

    Is it possibile to extend SSTV activity for next weekend with other images order?

    73, Armand

  • ARISS SSTV Commemorative Activity Coming Soon (July 2017)   17 weeks 4 days ago

    I can confirm that here in South Africa we have also experienced the phenomena of the same pictures being received as on the previous orbit.

    The AOS time difference for us is 96 minutes which matches exactlty with the time it takes to send all 12 pictures and then all 12 again.
    So on these orbits our pictures always repeat.
    But there is a small synchronization drift, which can help one get the start/end of the picture perhaps not received cleanly on the previous pass.

    If there was just one more or less picture...
    Or the pause time made shorter by 10 seconds...

    The pictures are great though. Would just have been better to be able to catch more of them and not see the same repeating from one pass to the next. Getting there, but its slow going.

  • ARISS SSTV Commemorative Activity Coming Soon (July 2017)   17 weeks 4 days ago

    There does seem to be longer gaps between transmissions at times. Others have also tweeted some having 5 minute gaps in between at times. I had early morning pass today and thought transmissions were turned off having heard nothing from AOS until mid-pass was overhead where I could visually see the ISS in clear night sky and found packet digipeater was unresponsive before SSTV transmissions started confirming like others around the 5 minute period.

  • ARISS SSTV Commemorative Activity Coming Soon (July 2017)   17 weeks 4 days ago

    So these are sequential and apparently separated by 2 minutes. That does shift the sequence a bit closer to cycling the same ones over a location with ~48 minutes to cover a cycle (which is just over half an orbit). Still, they should drift a bit each orbit and folks should see a different set over each day.

  • ARISS SSTV Commemorative Activity Coming Soon (July 2017)   17 weeks 4 days ago

    Have to agree with Patrick. It could be the location and how many images you receive during each pass. For me I normally get part of image at start and end of pass due to buildings but usually 2 good clean full images using THD74 HT + Arrow-2 handheld antenna. After 2 nights over the UK have missed 2 images in total now so very pleased with that. Every image received have been in numerical order with the last 2 images 12/12 & 1/12 and the best ones are posted on this site with the times received so you can see. There are some repeat images on some following passes but think after another possible 1-2 nights will get the full set.

  • ARISS SSTV Commemorative Activity Coming Soon (July 2017)   17 weeks 4 days ago


    So far, it looks like the pictures are transmitted in numeric order, going from 1 to 12, then restarting with one. The pictures I'm copying are always coming in numeric order, not in any random sequence. If a randomizer function can be used to mix these up, as long as it doesn't cause the same pictures to be sent one after the other, that would be interesting.


    Patrick WD9EWK/VA7EWK
    Twitter @WD9EWK or

  • ARISS SSTV Commemorative Activity Coming Soon (July 2017)   17 weeks 5 days ago

    That seems odd or highly improbable. The orbit of ISS is ~92 minutes. If the images take 2 minutes and the gap is 3 minutes then 12 images should repeat in 60 minutes. If they are transmitted sequentially then you should only see them duplicated about every other orbit.

    I thought the program just sent them randomly and it may be that you got the same 3 randomly. Guess we need some more data points to discover the process. Thankfully the event is scheduled to run until Monday, July 24 at 18:00 UTC.

    Kenneth - N5VHO

  • ARISS SSTV Commemorative Activity Coming Soon (July 2017)   17 weeks 5 days ago

    I must say thankyou to who were able to set up the SSTV for all of us to Download very good signal from ISS from edge to edge and very nice photo's for all of us to collect BUT the only trouble is because ISS takes the same time to get over us here in Australia we get the same Photo's from the file which start at 3 and go to 5 each pass so far I have 3 sets of the same Downloads 3 to 5 and I --we have no chance of the 12 photo full Downloads unless you give us more time ==would it be better to have the PC pull Random Photo's from the file to give Us --Me some hope of the full 12 Downloads ????
    VK4EM Merv QLD. Australia ...........

  • PD120 SSTV Test Recording to Use in Preparation for Upcoming ISS SSTV Events   17 weeks 5 days ago

    Update 2017-07-21:

    Crew schedule now indicates activity SSTV will conclude at 18:00 UT on Monday, July 24.

    73 de IW2BSF


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