UHF radio channel

The UHF radio channel is used to transmit telemetry from the spacecraft to Earth. The amount of telemetry information from the spacecraft is usually much lower than the data flow from the payload for which the spacecraft was launched into space. On the other hand, in case of malfunctions on board and possible loss of orientation by the spacecraft, this communication channel remains available for obtaining critically important information about the status of onboard systems and for restoring the functionality of the spacecraft. At the same time, the low-speed communication channel consumes small amount of energy compared to the HF radio channel.

As part of the Orbix constructor set, the UHF radio channel is implemented in the form of two modules: the onboard UHF transmitter module and the ground UHF receiver module. The data array transmitted from the spacecraft to Earth consists of a byte array of arbitrary length and composition that can be transmitted to Earth with its length specified. Messages received on Earth during the communication session are displayed in real-time in the CNS interface "as is", so it is most advantageous to transmit telemetry in text form.

UHF Transmitter

The UHF transmitter of the spacecraft usually operates at a frequency of 145 or 436 MHz and provides a low data transfer rate, with an omnidirectional or nearly omnidirectional onboard antenna.

UHF Receiver

The UHF receiver included in the constructor simulates the operation of the radio receiving part of the ground telemetry reception station through the low-speed channel. During experiments with a "space probe", similar receivers will be mounted directly on the surface of the "Earth" - globe. However, for the preliminary practice of working with the probe, this UHF telemetry receiver is also included in the set.