{HEAD ~ a receiver module housing}, wherein {TAIL ~ the second end} of the tube is mechanically coupled to an outer surface of the receiver module housing; and 
wherein
{ HEAD ~ a receiver module housing } , wherein { TAIL ~ the second end } of the tube is mechanically coupled to an outer surface of the receiver module housing ; and
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH