The S2DR HRTX from Augustus Aerospace Company is a Space Transmitter with an S-band frequency range of 2.2-2.3 GHz and an X-band frequency range of 8-8.4 GHz. This transmitter has a transmit bandwidth of 72 MHz and an average transmit power of 1 W. It supports QPSK, 8PSK, 16APSK, and 32APSK modulation that provides coded spectrum efficiencies of up to 4.4 b/s/Hz. The transmitter is based on a powerful Xilinx ZYNQ 7035 SOC processor and has a serial flash memory capacity of 16 MB. It requires a DC power supply of 12 V and has a power consumption of 23 W. The transmitter has a mass of 500 g and measures 10.0 x 10.0 x 2.614 cm. It is ideal for applications such as high-rate LEO space-to-ground mission data links, high-rate inter-satellite links, and flexible / reprogrammable mission data transponders.