Sigma Communications Incorporated (SCI), a full
service company, provides a variety of communication services to
meet domestic and international requirements. We offer the option
of full turnkey or man/day rate upgrades. We have successfully installed
over 100 earth station antennas along with numerous communication
specialize in installation and maintenance of earth station antennas,
control systems and ancillary equipment. Our staff focuses on end-to-end
installation, verification testing and commissioning of satellite
and telephony systems. We have engineering credentials in antenna
structures, monitor and control systems (M&C), SSPA, HPA, LNA,
, deice systems, Jog to monopulse tracking systems, and all phases
Due to increasing lead-times of both mechanical and electronic components,
a system failure can result in several weeks of down time. Our maintenance
programs ensure all systems are in good working condition, greatly
extending troublefree operation of your gateway. Sigma offers the
best possible service with the utmost expertise, quality and affordability.
We respond promptly with minimal notice to your emergency needs.
Retrofitting older earth stations with State-of-the-art equipment
and systems is another service offered by SCI. Our expertise ranges
from VSAT’s to 32 meter “A” stations. We have
extensive experience in this area and offer smooth transition from
design,engineering and maintenance through installation, commissioning
SCI consults in project design and upgrades. Acting
as a third party, SCI assures quality control to your project.
Turnkey & Man\Day Installations: SCI offers complete antenna
installation including optical (theodolite) alignment and testing
for VSAT’s up to 32m antennas. Additionally, SCI installs
and tests IFL, IF and RF subsystems. Complete ancillary equipment
packages including receivers, modulators, amplifiers, TWTA’s,
fiber optics, control and monopulse tracking systems are available
Retrofits and Upgrades: SCI upgrades and repairs antenna subsystems,
both mechanical and electronic, refurbishing damaged and worn
earth station components to like new condition.
Site Surveys: SCI conducts detailed assessments of existing
or proposed earth stations, providing comprehensive results
in a user-friendly format.
System Verification Testing & Antenna Commissioning:
SCI field engineers and technicians provide all pertinent tests
for optimal performance and commissioning of antennas and earth
stations. Sigma performs a variety of tests that include G/T
(spectrum analyzer/radio star method), crosspol isolation contours
and error channel pattern, to name a few.
Maintenance Agreements: SCI provides maintenance programs,
which enable company technicians to visit client’s sites
on a regular basis to inspect and provide upkeep of antennas.
Also available are extensive waveguide, RF calibration and testing.