C/TT-505 UHF Command Telemetry Data Transceiver for proximity links.

00Model C/TT-505 UHF Command Telemetry Transceiver is designed to provide a wireless RF link between two orbiting spacecraft or other craft such as a Lander on the surface of Mars, and an Orbiter craft orbiting above. The purpose of these transceivers is to facilitate the passing of data and commands between the two craft. One UHF transceiver is required for each vehicle i.e., one for the Lander and another for the Orbiter.
00The two transceivers employ a common design to provide maximum flexibility and cost savings. A full-duplex link, incorporating an error detection and re-transmission protocol to provide an error free communication service, is supported with two-way links operating in the 400-500 MHz band.

C/TT-508 UHF Reconfigurable Command Telemetry Data Transceiver (ELECTRA)

00Model C/TT-508 Electra UHF Transceiver is a fully reconfigurable, frequency agile transceiver operating in the 390-450 MHz band. The Electra allows post-launch reconfigurability of protocol and signal processing functions over the spacecraft lifetime to support protocol updates and respond to unanticipated user mission scenarios. The unit also supports multiple transmit/receive channels to allow interference free operation in a multi-user environment.

 

C/TT-510 UHF Reconfigurable Command Telemetry Data Transceiver Lite (Electra Lite)

00Model C/TT-510 Electra Lite retains the core functionality, performance and reprogrammability of the Electra transceiver while also providing a significant savings of volume and mass. Switching from Electra's post-launch reconfigurable full duplex or half duplex modes to full duplex or half duplex configurable at the time of manufacture provides a mass saving of 40% and volume savings of 50%. Thus, the Electra Lite is ideal for a lander portion of a proximity communications system.