These are two units to Up/Down convert frequency in the radar band for airborne applications.
Both units include a controller with firmware specialized to the management of automatic compensation and to the measurement of signal levels.

The Downconverter receives RF input signal (between 8.9 and 10 GHz) and converts it to IF through a two-stage process.

The Upconverter unit performs the opposite operation, receives the input IF signal (between 26 and 30 MHz) and rises it to the X-band RF by 2 stages of conversion.