The HD32589 from HD Communications Corp is a Voltage Controlled Oscillator with Frequency 4245 to 4335 MHz, Power 0.63 to 2 mW, Tuning Sensitivity 70 MHz/V, Tuning Voltage 0.5 to 8 V, Pulling 10 MHz. Tags: Module with Connectors. More details for HD32589 can be seen below.