p) said mobile stations on {HEAD ~ aircraft} have a transmission power output which is substantially lower than the transmission power output of a mobile stations on {TAIL ~ land vehicles} 
p ) said mobile stations on { HEAD ~ aircraft } have a transmission power output which is substantially lower than the transmission power output of a mobile stations on { TAIL ~ land vehicles }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL