{HEAD ~ The associated circuitry} within the transponder does the actual testing and includes an oscillator, a transmit frequency circuit, {TAIL ~ a self test interrogation circuit}, and forward power detectors 
includes
{ HEAD ~ The associated circuitry } within the transponder does the actual testing and includes an oscillator , a transmit frequency circuit , { TAIL ~ a self test interrogation circuit } , and forward power detectors
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH