Garmin GPS 150 Pilot's Manual page 88

APPENDIX C
GPS 150 Abbreviations
78
RX- Receive only
SAR- Search And Rescue
SEC- Seconds
SEQ- Sequence
SGL- Signal
SLCT- Select
SRFC- Surface
STR- Steer To
TACAN- TACtical Air Navigational aid
TAS- True Airspeed
TAT - Total Air Temperature
TEMP- Temperature
TMA- ICAO Terminal Control Area
TRK- Track Angle
TRN- Turn Angle
TRSA- Terminal Radar Service Area
TWR- Tower
TX- Transmit only
U- UTC time
UNI- Unicom
URA- User Range Accuracy
USER- User Waypoint
USR- User Waypoint
UTC- Universal Time Coordinated
(GMT/ Zulu)
VN- VNAV or Vertical Navigation
VNAV- Vertical Navigation
VOR- VOR Waypoint
WPT- Waypoint
WX- Weather