The CXK-1000 from L3Harris Technologies is a Satellite Transponder with Input Voltage 28 V, 9.5 to 12.3 V (Isolated Power), Mass 5.17 Kg, Dynamic Range -120 to -30 dBm, Frequency Stability Locks to 10 MHz external ref, Radiation 25 kRad (Tested to GEO), 26 krad (Parts Level), 52 kRad (Tested to ELDRS). More details for CXK-1000 can be seen below.