0 pins are on the high power RF circuit board.Input RF type Amplifier of the Evaluation board.Using the HMC478 search parameter, you can discover variants of the RF Board.PCB is the one that mounts RF Board.
110170-HMC478MP86 Features
0 pins Amplifier Type
110170-HMC478MP86 Applications
There are a lot of Analog Devices Inc. 110170-HMC478MP86 RF Boards applications.