The Columbus module is designed to undertake experiments but may also be used as temporary sleeping accommodation for the European astronauts. It is anticipated that most, if not all of them, will be licensed amateurs. Two ARISS antennas (L/S band) were installed on the European Space Laboratory Columbus. A DATV (digital amateur television) transmitter is installed …
Apr 13
Sunday 13 April 2014, Koichi Wakata, KC5ZTA, operated OR4ISS and successfully completed the HamVideo commissioning with ARISS team, HamTV on ISS. Commander Koichi Wakata congratulated ARISS for this achievement and answered a series of questions, prepared in the manner of a school contact. He also proceeded to a microgravity experiment. 5mn 44s of video received …
A NEW DVB-S/S2 DATV RECEIVER The DATV-Express group has completed a new DATV DVB-S/S2 receiver design now available for sale. Named the “Minitiouner-Express”, it is completely assembled, tested and contained in a small aluminum enclosure about the size of a 2 stack of playing cards. It is designed to operate with the excellent free MiniTioune …
Adapted from a paper by Jean-Pierre Courjaud – F6DZP Gaston Bertels – ON4WF IQ Symbols and Constellations A DVB-S transmitter produces a continuous Transport Stream of data (see Introduction to digital satellite television technology). The Transport Stream modulates the RF carrier. In general, DATV uses QPSK modulation. The data transmitted are IQ Symbols or “Symbols” …
Gaston Bertels – ON4WF The Moving Picture Experts Group (MPEG) is a working group of authorities that was formed in 1988 by ISO (International Organization for Standardization) and IEC (International Electrotechnical Commission) to set standards for audio and video compression and transmission. First published in 1996, H.262 or MPEG-2 Part 2 is a video coding …
The following is adapted from a presentation by Jean-Pierre Courjaud F6DZP at the ARISS international meeting, Houston 2016 The MiniTiouner is a DATV receiver designed by Jean-Pierre Courjaud F6DZP. With dedicated software it is perfectly suited for HamVideo reception. The MiniTiouner is a NIM based receiver. The “Network Interface Module” or NIM supports several tasks: …
To provide 10 minutes of HamVideo reception, a chain of ground stations located along the pass of the ISS footprint, is needed. In Europe, the following stations participate to this chain: For descending passes: EI9FHB, Cork, Ireland F6DZP, Poitiers, France IK1SLD, Casale Monferrato, northern Italy IZ7EVR, southern Italy (not operational) On the world map, one …
Jean-Pierre Courjaud F6DZP wrote dedicated software for the reception of HamVideo signals. The Tutioune 1600 software commands the TT S2-1600 PCI card and handles the transport stream. In ISS mode it also adds the missing DVB tables. The program not only delivers video and audio, but also provides technical parameters such as RF power and …
Since 2014, ground stations have used the Techno Trend TT S2-1600 PCI card for reception of the DATV signals transmitted by the HamVideo transmitter. This card is not produced anymore, but some are offered for purchase on Ebay. The TT S2-1600 PCI card comprises: a zero tuner a QPSK DVB-S demodulator a Transport Stream to …
HamTV Status The HamVideo DATV transmitter has stopped working April 2018. Provisions were that, in such a case, the transmitter should be discarded and disposed of as waste. ARISS succeeded in having the HamVideo transmitter downmassed by a SpaceX vehicle. The parcel was recovered after splashdown in the Pacific and delivered to NASA (Houston). The …