The SFS1000D-LF from Z-COMM is a Frequency Synthesizer with Frequency 1000 MHz, Reference Frequency 10 MHz, Output Power -3 to 3 dBm, Harmonics -12 dBc, Spurious -70 dBc. Tags: Surface Mount, PLL Frequency Synthesizer. More details for SFS1000D-LF can be seen below.