Page 224 - International Space Station Benefits for Humanity, 3rd edition.

MAI-75 Experiment, Main Results and
Prospects for Development in Education
The MAI-75 experiment develops and validates the Space experiments such as
concepts for designing and operating an innovative these enable the secondary-
telecommunication satellite system at the Moscow
Aviation Institute (MAI) to support video information and higher-education systems
broadcasting from space in real-time to a wide to enhance the effectiveness of
range of users within Russia’s academic mobile
communications and internet user communities. teaching natural sciences and
The MAI-75 space experiment (“Spacecraft and to promote the interest of the
Modern Personal Communication Technologies”) public in the space programs
has been carried out on the ISS Russian Segment
(RS) since 2005. implementation.
The MAI-75 experiment is carried out using a notebook
computer on the ISS RS, which stores and prepares

the photos and videos that are then transmitted to
Earth using the ham radio communication system, the
primary component of which is the onboard Kenwood
TM D700 transceiver of the “Sputnik” ham radio system
within the 144-146/430-440 MHz bands.
The experiment used a communication channel
operated on the ham radio frequencies, allowing for
significant expansion of the number of experiment
participants both in Russia and globally. The experiment
results can be obtained at a work station. All that is
needed is transceiver equipment that operates on
VHF ham radio frequencies.
Russian Cosmonaut M. V. Tiurin during a During the experiment, a total of 120 communication
communication session with the Moscow
Aviation Institute. sessions were carried out between the ISS RS and the
MAI Data Reception and Processing Center, each with
Image credit: Moscow Aviation Institute (National a duration of 9 to 15 minutes, and more than 240 video
Research University) images were received. The images ranged in size from
14 KB to 94 KB.

Samples of images taken from the ISS RS by amateur radio communication channel during
the sessions of SE MAI-75.
Image credit: Moscow Aviation Institute (National Research University)

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