0 pins are on the high power RF circuit board.Input RF type Modulator of the Evaluation board.Using the HMC1197 search parameter, you can discover variants of the RF Board.PCB is the one that mounts RF Board.
EVAL01-HMC1197LP7F Features
0 pins Modulator Type
EVAL01-HMC1197LP7F Applications
There are a lot of Analog Devices Inc. EVAL01-HMC1197LP7F RF Boards applications.