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The main objective of his contract is to develop a set of new functions for the existing TCR transmitter product, as described in the features section. Different customers have demanded these new functions.
The new TCR transmitter with its advanced features will answer to the demand of a larger number of potential European and American customers.
The product baseline upon which this unit has evolved has already proven a great flexibility for its use in the most common platform (SS/L, Eurostar, Spacebus, etc.) and on the full C and Ku bands for transmission.
The main benefit of this new TCR Transmitter is that the unit will be unique and will incorporate all or part of its new characteristics. In this way the production costs will be maintained competitive. The use of hybrids will allow also a high degree of integration and a lower level of tuning.
The resulting TCR transmitter will have the same architecture than the existing generation, and will incorporate the following evolutions:
The main specifications are:
|Frequencies||4217.25 - 4225 MHz
32 channels / 250 KHz step
|External Frequency Reference||7 MHz|
|Interface||Generic design for SS/LORAL compatible with EUROSTAR 3000|
The plan is to develop partial breadboards to validate the different improvements individually, so that later they get combined in a single EQM design. This EQM is qualified against an envelope of the requirements from the most common satellite platforms, namely Alcatel/Thales, Astrium Eurostar, and Space Systems/Loral, comprising performance and environmental requirements.
Qualification has been successfully achieved via the agreed qualification campaign, with the following environmental tests:
|Frequency (Hz)||Acceleration (g)|
|Operating for Qualification||-25°C /+70°C|
Features included in programs currently in orbit, such as ICO and Terrestar, and also delivered.