The system, according to the invention, positively employs {HEAD ~ a narrow portion} of the width of {TAIL ~ the lock frequency range} of the phase locked loop 
The system , according to the invention , positively employs { HEAD ~ a narrow portion } of the width of { TAIL ~ the lock frequency range } of the phase locked loop
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH