|
|
 back
("C"-band ES)
Polus-SCC-1,6C
| Polus-SCC-3,7C | Polus-SCC-5C
| Polus-SCC-7,4C | Polus-SCC-9,3C
 Earth station
Polus-SCC-2,5C
Used in departmental, general
use and fixed networks via retransmitters in a geostationary orbit within range 5925 - 6525 MHZ on transmission and 3600 - 4200 MHZ on recieve.
Using stations of a satellite communication Polus-SCC-2,5C, on a complete set of
the terminal equipment, it is possible to provide:
- The organization of a network of the fixed duplex digital directions of a satellite communication;
- The demand assignment multiple access mode (DAMA).
Information transfer
rate is up to 1024 kbps in a fixed directions mode and up to 64 kbps
in DAMA.
The basic characteristics:
| Antenna reflector effective diameter
|
2,5 m (offset)
|
| Polarization
|
transmission |
left-hand polarization |
| recieving |
right-hand polarization |
| Antenna gain
|
transmission
|
no less 42,0 dB
|
| recieving
|
no less 38,0 dB
|
| Range of angular movings of a reflector
|
- at mechanical reinstallation on angle of elevation
0° - 60°
- at mechanical reinstallation on an azimuth ±60°
- at autotracking on angle of elevation ±2,5°
- at autotracking on an azimuth ±2,5°
|
| G/T (angle of elevation 10o)
|
no less 18,0 dB/K
|
| Power amplifiers
|
from 6 to 50 W (depending on a required mode)
|
| Inaccuracy of maintenance of the transmitter's output power
|
no more than ±0,5 dB
|
| Relative frequency instability of the transmitter and HF
(first) oscillator of the reciever
|
no more than ±1x10-7
(during the month)
|
|
Radio-frequency equipment — modem interface
|
by frequency 70 MHz
|
| Availability ratio of the station
|
0,999
|
| Power supply
|
single-phase AC line 220 Â +10%/-15%;
frequency 50±2,5 Hz
|
| Power consumption
|
to 600 W
|
THE STATION HAS THE BUILT-IN UNIFIED CONTROL SYSTEM
|
|
