I’m passionate about radio signals and interested in technology and space.
On this site I publish posts and links about the topics of that interest me. Topics include science, astronomy, technology, radio Astronomy, radio communications, nature, space and many more. The content are in Finnish and also in English.
You can find more about my work experience on my LinkedIn page.
Balcony antenna setup for VHF/UHF/SAT bands
My balcony antenna setup for VHF, UHF and SAT bands. I receive LEO-satellites on 145 MHz and on 437 MHz and undecoded traffic on Military Air band on 240-380 MHz. On L-band I receive Air Traffic ACARS-messages and ships STD-C messages and EGC/LES data traffic from Inmarsat(Alphasat) satellite. Every now and the I also listen radio amateurs working on QO-100 satellite on 10 GHz. Satellite dish diameter is 90 [...]
Radio signal from Soyuz spacecraft – Expedition 63
Astronaut Chris Cassidy of NASA and cosmonauts Anatoly Ivanishin and Ivan Vagner of the Russian space agency Roscosmos lifted off on board Soyuz spacecraft at 4:05 a.m. EDT from Baikonur Cosmodrome in Kazakhstan. They make a four-orbit and six-hour journey to the International Space Station. This is the third spaceflight for both Cassidy and Ivanishin and the first for Vagner. During their mission on the station, they'll welcome NASA's [...]
Milstar UHF FHSS Downlink
UHF FHSS Downlink of Milstar, a Unites States joint military service satellite communications system that provides secure, jam resistant, worldwide communications. Milstar (Military Strategic and Tactical Relay) is a constellation of military communications satellites in geosynchronous orbit. Those are operated by the United States Air Force and they provide secure jam-resistant worldwide communications so that they meet the requirements of the Armed Forces of the United States. Six spacecraft [...]
Receiving old Russian Military COSMOS Navigation Satellite Signal – Video
Receiving Cosmos 2463 satellite with SDR# software and SIRIO SD 1300 N Discone Antenna 25 MHz - 1.3 GHz antenna powered with amplifier. For satellites tracking I use Orbitron. Cosmos satellites are old Russian Navy navigation satellites that are no longer in use. See more information below. "The Russian Military Parus satellites are/where used for low-earth orbiting navigation information and store-dump radio communications relay service for Red Navy surface [...]
Projekti: Etäohjattava Raspberry Pi 3 Model B + Webcam + SDR-dongle
Harrastustoimenpiteenä oli rakentaa roiskeveden sekä pölyn kestävä(IP67) salkku(mitat: 33x28x12 cm), jonka voi tarvittaessa viedä mihin tahansa ja siihen saa etäkäyttöyhteyden internetin välityksellä. Laitteen toiminnasta: Kun internetyhteys muodostuu 4G-mokkulalla, ohjelma Raspberryssä päivittää IP-osoitteen noip.com -palveluun. Näin ollen käyttäjän ei tarvitse etsiä IP-osoitetta, tarvitsee vain muistaa verkko-osoite. Ulkoinen virransyöttö lataa Varta-akkua joka syöttää virtaa Clash Ohlson akkuun mihin Raspberry on kytketty. Tällä järjestelyllä virransyöttö ei katkea kun virransyöttö aurinkopaneelista katkeaa pilvisellä [...]