The BW429 from Sainty-Tech Communications Limited is a Voltage Controlled Oscillator with Frequency 10.30 to 11.50 GHz / 5.15 to 5.75 GHz, Power 7.94 to 10 mW, Tuning Voltage 2 to 13 V, Pulling 10 MHz, Pushing 16 MHz/V. Tags: Die. More details for BW429 can be seen below.