0 pins are on the high power RF circuit board.Input RF type Upconverter of the Evaluation board.Using the HMC925 search parameter, you can discover variants of the RF Board.PCB is the one that mounts RF Board.
131092-HMC925LC5 Features
0 pins Upconverter Type
131092-HMC925LC5 Applications
There are a lot of Analog Devices Inc. 131092-HMC925LC5 RF Boards applications.