8903 - Byrd


Location:  
	80 degrees S, 120 degrees W.  Elevation 1530 meters.

Hex id:
	8B1DC

Power:
	6 VDC supplied by RTG

Aerovane:
	Old was 3-78-014.  Wind direction polarity verified before removal.  New is 00-00-01.

Deployed:
	8 December 81 0400 Z by Savage and Lt. Whitlock


Parameter		Input			Test Set Output		Difference

temperature		-12.8 C			-12.9 C			+0.1 C
pressure		814.5 mb (Paulin)	811.4 mb		-4.1 mb
			812.4 mb (Byrd obs)	811.4 mb		-1.0 mb
inst wind speed		 36.1 m/s *		 43.2 m/s		+19%
inst wind direction	    N			    0 deg		-------
mean wind speed		  1-2 m/s		  1.1 m/s		   ?
mean wind direction	    N			    0 deg		-------
voltage			  6.4 volts		  5.9 volts		-0.5 volts

	* wind speed simulated by calibration voltage


Modifications:
	
	1. Minimum thermometer installed
	2. Reflective temperature probe shroud and insulating bushing installed
	3. Aerovane replaced


Comments:
	
	1. Pressure of 815.5 mb was obtained from the Paulin microbarometer carried with us from McMurdo.  Pressure value of 812.4 mb was obtained from the Byrd Surface Camp microbarograph, and this should be a less accurate reading.