The RK408 from Rakon is a OCXO with Frequency 10 to 125 MHz, Supply Voltage 5 to 12 V, Output Power 10 to 12 dBm, Resistance 50 Ohms, Phase Noise -160 to -150 dBc/Hz @ 1 KHz, -165 to -162 dBc/Hz @ 10 KHz. Tags: Module with Connectors. More details for RK408 can be seen below.