The KFSW200400-100 from Synergy Microwave Corporation is a Frequency Synthesizer with Frequency 2 to 4 GHz, Step Size 1000 KHz, Reference Frequency 10 MHz, Output Power -3 dBm, Supply Voltage 5 to 18 V. Tags: Module with Connectors, PLL Frequency Synthesizer. More details for KFSW200400-100 can be seen below.