HC-49/SM12.00MHZ HC-49/SM12.288MHz HC-49/SM-14MHZ(30PPM) HC-49/SM-19.6608MHZ HC-49/SM-20.25000MHZ(30PPM) HC-49/SM4H HC-49/SM-4MHZ(15PF) HC-49/SM5_13.5MHZ HC-49/SM5H HC-49/SM5H 12MHZ 30PPM