TNAG-2109-FCO40-3008-Outer-Space-Act-1986-extension-to-Hong-Kong-1990 — Page 123

except where such modifications are made to correct known, documented system faults. It shall be possible to install either the new releases of such software without modifying Contractor or manufacturer-supplied software except where

by software revisions made

the by

precluded manufacturer.

7.0 ANTENNA AND RADIO FREQUENCY EQUIPMENT

All

the

computer

which equipment

interfaces with

intermediate frequency signals of the satellite control equipment shall be provided by the Contractor, including frequency conversion units, RF power amplifiers, low noise amplifiers and antenna installations.

The antenna and RF equipment provided by the Contractor shall perform Tracking, Telemetry, Command and Ranging operations for routine or emergency geostationary operation.

7.1 Antenna Subsystem

One

limited

motion antenna with by the Contractor. provided requirements of this section and is

It

shall steptracking

shall meet all intended to be used

be

the

follows:

i)

to provide routine

telemetry,

ranging,

and

command

operations on the satellite.

ii)

7.1.1

7.1.2

optionally for satellite test purposes.

Effective Isotropic Radiated Power (EIRP)

The SCF antenna, together with the command and ranging RF subsystems shall provide the command and ranging uplink flux density required by the spacecraft, with adequate margin to ensure successful operation over the spacecraft lifetime, including the effects of:

i)

ii)

iii)

iv)

equipment degradation below specified performance

interference;

atmospheric fading; and,

backup operational requirements

The margin for emergency operations with equipment at specified performance shall be not less than 7.0 dB over clear sky performance.

Frequency and Polarization

The SCF antenna shall meet the frequency and polarization requirements of the satellite.

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