VCXOM51 VCXO-S227(44.736MHZ) VCXO-S229-3-LF26.0MHZ VCXO-S403-51.840MHZ VCXO-S472-LF VCXO-S472-LF622.080 VCXO-S472-LF622.080MHZ VCXO-S472-LF-622.080MHZ VCXOS-472-LF691.20 VCXO-S472-LF-691.200MHZ