The NCPC1-843B from Roswin is a Phase Locked Loop with Frequency 832.5 to 852.5 MHz, Phase Noise -151 to -77 dBc/Hz, Output Power 5 dBm, Harmonic Suppression -21 dBc, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount, Integer-N PLL. More details for NCPC1-843B can be seen below.