Tracking and Data Relay Satellite System (TDRSS) transmitter
The T-740E Transmitter is a rugged, flight-proven Tracking and Data Relay Satellite System (TDRSS) transmitter with successful launches on multiple launch vehicles. It provides the critical connection between a launch vehicle and NASA’s TDRSS for complete telemetry coverage during ascent and staging, alleviating dependence on downrange telemetry gathering stations.
The center frequency of the T-740E transmitter can be set across the TDRSS S-band with simple tuning changes. It uses a low-phase noise temperature-compensated crystal oscillator for the frequency source. Phase noise is less than 5° RMS under vibration conditions experienced during launch. Premodulation shaping of the data is available for optimum spectral containment.
The solid-state power amplifier (SSPA) employs high-efficiency, space-qualified gallium nitride field-effect transistor power devices to generate the 40-watt RF power. Design of the SSPA minimizes compression of the shaped signals over all environments.
Yes, we retrofit legacy systems (e.g., GE Frame 5, Siemens V94.2) with modern digital controllers, typically completing hardware integration within 4-8 weeks. Software migration requires additional validation time.
We recommend annual performance testing under ISO 3977-2 standards. Critical applications (e.g., offshore platforms) may require semi-annual tests with emissions compliance checks.
All rad-hard devices (e.g., FPGA, ADC) are QML Class V certified under MIL-PRF-38535 and tested to MIL-STD-883 Method 1019 for SEU tolerance. Full qualification reports are available upon request.
Our ASICs and power management ICs operate across -55°C to +175°C ambient temperatures, with derating curves provided in military temperature range (MTR) datasheets.
Our PMA parts (e.g., actuators, sensors) hold FAA/EASA Form 1 certification and match OEM form/fit/function. Installation requires SB/MB documentation per FAA AC 23.1529.
All NAS/MS fasteners include full DNA traceability: melt source (AMS 2301), heat/lot numbers, and AS9100-compliant MTRs with ultrasonic test reports.
AOG orders ship within 4 hours for stocked items (FAA-PMA, EASA Part 21G). Non-stock critical parts trigger priority manufacturing with 72-hour max turnaround.
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