There are 0 pins on this high power RF circuit board.The Evaluation board type is Amplifier.Try searching with HMC311 to find RF Board variants.The mount is attached to PCB.
106789-HMC311LP3 Features
0 pins Amplifier Type
106789-HMC311LP3 Applications
There are a lot of Analog Devices Inc. 106789-HMC311LP3 RF Boards applications.