Most preferably the filter tuning circuit and {HEAD ~ the oscillator tuning circuit} are formed on {TAIL ~ a single Integrated circuit} 
Most preferably the filter tuning circuit and { HEAD ~ the oscillator tuning circuit } are formed on { TAIL ~ a single Integrated circuit }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL