a decoder coupled to the receiver for recovering {HEAD ~ the selective call message} from {TAIL ~ the demodulated signal} 
from
a decoder coupled to the receiver for recovering { HEAD ~ the selective call message } from { TAIL ~ the demodulated signal }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL