The ADC-4001 from Aldetec Inc is a Down Converter with RF Frequency 19.7 to 21.2 GHz, LO Frequency 18.75 to 19.25 GHz, IF Frequency 950 MHz to 1.95 GHz, Conversion Gain 25 to 30 dB, Image Rejection -45 dB. Tags: Module with Connectors. More details for ADC-4001 can be seen below.