{HEAD ~ The microwave assembly} may be a monopole microwave antenna assembly but is preferably {TAIL ~ a dipole assembly} 
is preferably
{ HEAD ~ The microwave assembly } may be a monopole microwave antenna assembly but is preferably { TAIL ~ a dipole assembly }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL