0 pins are on the high power RF circuit board.Input RF type Amplifier of the Evaluation board.Using the HMC719 search parameter, you can discover variants of the RF Board.PCB is the one that mounts RF Board.
121242-HMC719LP4 Features
0 pins Amplifier Type
121242-HMC719LP4 Applications
There are a lot of Analog Devices Inc. 121242-HMC719LP4 RF Boards applications.