Spectrum analysis is performed by sweeping through a specified frequency range and successively detecting signal power at {TAIL ~ each} of a plurality of relatively narrow frequency bands within {HEAD ~ the frequency range} 
Spectrum analysis is performed by sweeping through a specified frequency range and successively detecting signal power at { TAIL ~ each } of a plurality of relatively narrow frequency bands within { HEAD ~ the frequency range }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD