Due to the sensitive nature of this topic, I will only address this subject from a top level general process.

Data from the satellite is collected by the Flight Computer for each subsystem and passed to the CDH subsystem where it is formatted into a telemetry stream.  This stream of data is clocked out at a defined rate to the telemetry transmitter (a dual function unit). The data is then modulated onto a transmit carrier, amplified to the transmit level and is then sent to the transmit antenna. Based on the design the telemetry transmitter can produce a single telemetry carrier, 2 telemetry carriers, a ranging carrier or a combination of both. The carriers are received on the ground at the assigned telemetry frequency.

As additional units and antennas are added to this subsystem to provide redundancy and flexibility hybrid devices or switches are installed to connect the transmitters to the antenna paths. The use of switches in the transmit path could result in a potential single point failure and therefore their use is minimized.

To accommodate higher transmit power requirements  the telemetry carriers have been passed through a payload channel. This is not a typical design, when used it is related to contingency operations configuration.