This unit is one in a range of L and S-Band repeaters we have developed.
The receive signal passes through a diplexer, low noise amplifier and downconverter. It is then routed to the transmit converter. After filtering, the signal is amplified to 33 dBm and passes a second diplexer. A series of coax switches allows the transmit signal to be routed through an external SSPA. The unit has two chains that operate cross band.
A 10 MHz OCXO, dual PLL and two VCOs provide highly stable local oscillator for receive and transmit sections.