0 pins are on the high power RF circuit board.Input RF type Mixer of the Evaluation board.Using the HMC292 search parameter, you can discover variants of the RF Board.PCB is the one that mounts RF Board.
109952-HMC292LC3B Features
0 pins Mixer Type
109952-HMC292LC3B Applications
There are a lot of Analog Devices Inc. 109952-HMC292LC3B RF Boards applications.