The NCPA7-439 from Roswin is a Phase Locked Loop with Frequency 433 to 443 MHz, Phase Noise -150 to -86 dBc/Hz, Output Power 3 dBm, Harmonic Suppression -33 dBc, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount, Integer-N PLL. More details for NCPA7-439 can be seen below.