FE_HAS_SYNC
status |= FE_HAS_SYNC;
status |= FE_HAS_LOCK | FE_HAS_SYNC;
festatus |= (FE_HAS_SYNC | FE_HAS_VITERBI);
FE_HAS_SYNC | FE_HAS_LOCK;
const uint8_t lock = FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC;
fs |= FE_HAS_SYNC;