The C4993A1-0008 (EM) from Vectron International is a OCXO with Frequency 10 MHz, Supply Voltage 11.4 to 12.6 V, Output Power 6 to 8 dBm, Output Load 50 Ohms, Phase Noise -165 to -85 dBc/Hz. Tags: Module with Connectors. More details for C4993A1-0008 (EM) can be seen below.