On the 14th march 2019 at 19:14 UTC the Soyuz MS-12 started from Baikonur, Kazakhstan with Astronauts Nick Hague, Christina H Koch and Cosmonaut Alexey Ovchinin Aboard. The flight to the ISS only took around 6 hours this time, and docking was planned for around 1:00 UTC the next Day.
There was a good pass of the ISS over my QTH here near Cologne, Germany just the Orbit before the planned Docking of the Soyuz MS-12 to the ISS. So i quickly tuned my SDR, that was connected to my QFH at the Roof as usual, to the VHF Frequency of the Soyuz capsule. And i got something!!!
A lot of ham radio operators use an Arrow Dual band Yagi that is made by a company in the USA to make contacts over satellites. The Antenna has enough gain for use with a low power 5w handheld radio and is relatively light.
It costs around 150$, what is not cheap. If you live in Europe you pay even more because of shipping etc.
I found two German ham radio operators that published information online to build Yagi antennas. The first one DK7ZB has some information about single band yagis and a simple match. DL3RTL used his plans and made a Arrow style dual band yagi out of it. I used these informations and designed a carbon version that is ultra light and simple to build because of the use of 3D printed parts.
Das Charity Event Racing4Friends auf dem Nürburgring ermöglicht körperlich und geistig eingeschränkten Personen aus verschiedensten Institutionen, ein paar Runden als Beifahrer in einem Rennwagen zu erleben. Dabei stellen größtenteils Privatpersonen ihre selbst aufgebauten Rennwagen oder Sportwagen zur Verfügung und drehen mit den Teilnehmern ein paar Runden auf der für diesen Zweck zur Verfügung gestellten Rennstrecke in der Eifel.
Ich habe ein paar Wochen vor dem diesjährigen Event von einem bekannten, der als Fahrer daran teilnimmt, davon erfahren und war von der Idee begeistert. Natürlich bekam ich sofort die Idee auch am Event Teil zu nehmen um Fotos bzw. Videos zu machen, sowie meinem Bekannten rund ein wenig zu unterstützen z. B. beim Auf und Abladen des Rennwagens.
So haben wir uns also gemeinsam am 12. November in der früh samt getunten und für Rennen umgebauten Fiat 500 Abarth auf den Weg in die Eifel gemacht. Das Wetter im Umkreis Köln/Bonn war mit starken Regen eher ernüchternd, zu unserem Glück war dies in der Eifel aber anders.
Mir so wie auch wohl allen anderen Teilnehmern hat das Event viel Spaß gemacht, dank meiner Media Anmeldung hatte ich die Chance hautnah dabei zu sein und auch an der Strecke Fotos zu machen sowie Videos in der Boxengasse zu drehen.
The ISS is sending SSTV Images again on the 6th and 7th of june on Orbits that pass over Moscow.
As always they use a 145,8mhz Downlink and PD120 modulation that uses around 16khz of bandwidth (FM Wide).
I run my ADSB Radar now for over a year and started out with a Flightaware Pro Stick that worked very well.
A few months ago i bought the very well known ADSB filtered LNA from UpUtronics that seems like it is the favorite of the community around the World.
Some weeks after i had my new LNA, the producer of the high quality RTL SDRs that many people use released a ADSB LNA. RTL-SDR.com developted a 3 time filtered LNA with two gain stages that has a gain of 27db and attenuates all out of band signals at least 60db.
I got into HRPT some time ago and was able to receive some nice images so far.
My setup is not optimal at all, but it works quite well already.
I post most of my HRPT images and other sat related stuff on my Twitter profile, follow me if you are interested :)
If you have questions, just send me an Email or contact me on Twitter etc.
First of all here is my Video about it, additional information and a few images follow further down this page.
There was a ARISS school contact between the Huntley Centennial Public School, Carp, ON, Canada and Paolo Nespoli on the ISS. They used the Telebridge IK1SLD in italy for making the contact to canada, while the iss was over europe, so I was in range and was able to receive most of the contact.
I used my QFH Antenna on the Roof that is connectedt with an 5m cable to my Airspy mini.
First of all, you can find the STLs of the 3D printed parts on Thingiverse.
I was searching for a AZ/EL Antenna Tracker for my Dish and all I found was quite expensive. After some search I found the Satnogs Project and the Tracker they developt. I then started designing a rotator that follows the same principal as the Satnogs one, but with bigger and stronger stepper motors and a smaller overall size.
After the SSTV Event on the ISS I discovered that the italian astronaut Polo Nespoli will make a few amateur radio contacts for the ARISS programm to stations around Europe in august. On these contacts the participents on earth will ask the astronaut questions, that they collected before the contact, over the amateur radio link. All voice contacts from the ISS are made over the same frequency as SSTV on 145.8 mhz. The modulation is standard FM, so almost any radio can receive it. Even a cheap Setup with either a SDR or Baofeng, like I used, works quite well.
ARISS celebrates its 20th Anniversary with a SSTV event from the International Space Station. he ISS is sending SSTV images from the 20.07.2017 (~21:25 UTC) until the 24.07.2017 (~18:00 UTC) on 145.800mhz. This time they are using the PD120 protocol, so each image only takes 2 instead of 3 minutes.
Like many others around the World, I will try to get as many images from the ISS as possible during the weekend. Unfortunately all passes of the ISS are in the middle of the night for me (and anyone around Germany) what is not that great. As the day go by, i will update this blog ost with my received images and what else was happening around it.
The DIY Receiver Kit from Outernet inc. unfortunately comes without any type of case.
So how you mount everything and point it to the satellite? Rubber bands and the box it comes in?
Because of that I sat down and used Fusion 360 to design a 3D printable Case for the Outernet Hardware.
My goal was to make a case that can hold the CHIP, SDRx and the Antenna but is as small as possible.
Also, the elevation angle of the antenna, that changes around the world, should be adjustable so it can be used everywhere. Beside that it also should look nice :)
Every few months, the ISS transmits pictures to be received from hams around the world. They are transmitted with a 3-minute gab between them on 145.800mhz.
These images are like postcards that you can collect. For each event there are 12 different ones, that can be collected, which mostly show historical moments of space flight. The SSTV, that comes from the MAI75 experiment, was last active in December 2016, where i unfortunately had no time to receive something. At an Event before, in August 2016, I received 6 images with a DIY QFH antenna that was connected to an SDR and LNA.
The ISS was scheduled to transmit SSTV for the last two days as the February event.
On Monday there was no Signal from the ISS at all, as far as I know, they had problems setting up the transmitter on the ISS. On Tuesday there were some people on twitter that got a SSTV signal from the station, so the transmitter was finally active!
At the end of December 2015, I build a QFH antenna out of PVC pipe and wire for the 2m band (~137mhz). That antenna was great to receive NOAA and MeteorM2 satellites, but it struggled when I was not at the open field. In mid 2016 I bought a cheap Yagi from eBay for the 70cm band to receive for instance the SO-50 amateursat. I was blown away by the performance of that cheap Antenna and searched for a 2m Yagi that I can buy or build myself.
After some study I decided that I was not willing to pay around €130 to import a Arrow antenna from the US and instead build one.