The first synthesizer generates an output signal having {TAIL ~ pilot tones} based on the path turning signal and {HEAD ~ the intermodulation compensation signal} 
The first synthesizer generates an output signal having { TAIL ~ pilot tones } based on the path turning signal and { HEAD ~ the intermodulation compensation signal }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD