Data receiving and satellites controlling station Zavitok

Data receiving and satellites controlling station Zavitok

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The complex provides two-way communication with small spacecraft. In addition to all the functionality of the "Viewnok" complex in terms of receiving data, "Zavitok" also allows sending control commands to a satellite in accordance with the rules of amateur radio communication, and also provides much better reception at a satellite low altitude above the horizon.

Mission control center. Zavitok station

"Zavitok" is based on SDR-technology (software-defined radio technology), that is, at least the basic demodulation operations are carried out programmatically. The complex provides calculation of the position of spacecraft in the sky, turning the antenna into a calculated point, calculating the necessary frequency shift to compensate for the Doppler effect, as well as automatic tuning of the frequency when receiving and transmitting in view of this shift.

Zavitok station. Control units

The complex includes an antenna with a high gain on the turntable, as well as survey antennas with a broad beam pattern similar to those used in the "Viewnok" complex.

The frequency range of the directional antenna: not narrower 435 ... 438 MHz
The frequency range of the survey antennas 136..146 and 435 ... 438 MHz
Data speed rate of the survey antennas: not less than 9600 bps
Transmitter output power: not less than 4 watts
The nominal gain of at least one antenna not less than 8dBi
The complex includes survey antennas with less amplification, similar to the Viewnok complex
Includes an antenna rotator
Supported Modulation Types: at least AX.25
Supported transport protocols: FSK

 

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