FCXO-05-38.9MHZ FCXO-0540.500MHZ FCXO-0540MHz FCXO-05-45.1584MJ41896 FCXO-05-49.152M FCXO-05-49.152MJ41898 FCXO-0550.000MHZ FCXO-05-54.000000MHZ FCXO-0565.000MHz FCXO-0566.6666MHz