0 pins are on the high power RF circuit board.Input RF type Amplifier of the Evaluation board.Using the HMC392 search parameter, you can discover variants of the RF Board.PCB is the one that mounts RF Board.
117490-HMC392LC4 Features
0 pins Amplifier Type
117490-HMC392LC4 Applications
There are a lot of Analog Devices Inc. 117490-HMC392LC4 RF Boards applications.