At receiver stations, {HEAD ~ signals} in received transmissions and from local inputs cause control processors and computers to automate connection and {TAIL ~ operation} of converters , tuners , decryptors , recorder/players , computers , furnaces , etc 
At receiver stations , { HEAD ~ signals } in received transmissions and from local inputs cause control processors and computers to automate connection and { TAIL ~ operation } of converters , tuners , decryptors , recorder / players , computers , furnaces , etc
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH