Link-Sat Communications
Communication Solutions for Africa

Satellite access in West Africa from Link-Sat

 
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Link-Sat Communications
11094 D Lee Highway, Suite 104, Fairfax, VA 22030, USA

Phone: 703 385 2117
Fax:  703 385 2119
Email: info@link-sat.net

HOW YOUR LINK-SAT TERMINAL WILL WORK

The Link-Sat terminal comprises of an outdoor satellite dish, similar to that of a satellite TV system which is connected to an indoor modem using two coaxial cables. Your own computing equipment (PC, router etc) is connected to the modem using a common CAT5 10/100 Ethernet cable.

Outdoor equipment comprises a parabolic antenna reflector and receive and transmit radio modules in front of the dish. Antenna sizes are 1.2m, 1.8m and 2.4m diameter. Larger sizes are required at the edges of the satellite beam coverage. Transmitter powers are 2 or 4 watts. The network coverage map shows the needed dish size and transmitter power required to achieve guaranteed service.

The indoor unit, which is sometimes called the Return Channel System Terminal (RCST), is a small box approx 13.1 inches wide, 7.53 inches deep and 1.7 inches (1U) high. It may be rack mounted using small brackets on either side. For reliable operation, put the RSCT in a cool, clean, dry place away from direct sunlight. Apart from the initial set up, the RCST requires no customer maintenance. At the back of the box are two F connectors for coax cables and a socket for a main lead (IEC type). The system power requirement can uses 115 to 230 volts.

LinkStar RCST

There is also an 8 way RJ45 socket for your CAT5 10/100 Ethernet cable to plug in.  The equipment is fully compliant with international DVB-RCS standards and is commonly used worldwide.

Download high speed data streams received from the satellite are analyzed and demodulated by the RCST circuits and the bandwidth intended for the specific customer terminal is delivered to the customer computing equipment via the Ethernet interface.
 
Upload data is prepared in the RCST which modulates the data into short packets or bursts which are then transmitted to the satellite in accordance with a turbo code time division multiple access (TDMA) system. This method of modulation and burst timing techniques are designed for maximum efficiency.
 
Many bit rates, dish sizes and transmitter powers are available to meet your needs and to allow for growth.
 

VSAT Network configuration

Copyright - © 2005 Link-Sat Inc. - All rights reserved.   Service Agreement - Standard Terms and Conditions      Amended 20 July 2009