The FSH127171-50 from Synergy Microwave Corporation is a Frequency Synthesizer with Frequency 1.27 to 1.71 GHz, Step Size 500 KHz, Reference Frequency 10 MHz, Supply Voltage 5 to 18 V, Current 10 to 40 mA. Tags: Surface Mount, PLL Frequency Synthesizer. More details for FSH127171-50 can be seen below.