The TX-BL from Transko Electronics Inc is a TCVCXO with Frequency 750 KHz to 800 MHz, Supply Voltage 3.3 to 5.0 V, Current 25 to 100 mA, Phase Noise -145 to -80 dBc/Hz, Phase Noise 1 kHz -135 dBc/Hz. Tags: Surface Mount. More details for TX-BL can be seen below.