There are 0 pins on this high power RF circuit board.The Evaluation board type is Downconverter.Try searching with HMC683 to find RF Board variants.The mount is attached to PCB.
119926-HMC683LP6C Features
0 pins Downconverter Type
119926-HMC683LP6C Applications
There are a lot of Analog Devices Inc. 119926-HMC683LP6C RF Boards applications.