The BW427 from Sainty-Tech Communications Limited is a Voltage Controlled Oscillator with Frequency 8.90 to 9.80 GHz / 4.45 to 4.9 GHz, Power 6.30 to 12.5 mW, Phase Noise -112 dBc/Hz, Phase Noise dBc/Hz @100kHz -112 dBc/Hz, Harmonic Supression -30 dBc. Tags: Die. More details for BW427 can be seen below.