, the more elevated {HEAD ~ the voltage input} to {TAIL ~ the transmit} receive processing section 28 
to
, the more elevated { HEAD ~ the voltage input } to { TAIL ~ the transmit } receive processing section 28
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH