8913 - Whitlock


Location:  
	76 degrees 05 minutes S, 168 degrees 20 minutes E on Franklin Island.  
	Elevation approximately 300 meters.

Hex id:
	8B44A

Power:
	12 VDC supplied by 9 PS-12360 gel cell batteries in parallel.  One 10 watt solar panel used for charging batteries.  Shunt regulator used to prevent overcharging.

Aerovane:
	3-78-012 used for testing.  00-00-00 deployed.

Deployed:
	23 January 82 by Lt. John Whitlock, NSFA.  Transportation to the island was via the Coast Guard icebreaker Glacier and shipboard helicopter.

Calibration: 
	27 November 1981  at McMurdo lab.


Parameter		Input			Test Set Output		Difference

temperature		   17 C			 17.1 C		 	 -----
pressure		978.9 mb		978.7 mb		- 0.2 mb
inst wind speed		 38.9 m/s *		 45.7 m/s		+ 17%
			 19.5 m/s *		 22.8 m/s		+ 17%
inst wind direction	   60 deg		   58 deg		 -----
			  360 deg		  359 deg		 -----
mean wind speed		 38.9 m/s 		 45.4 m/s		+ 17%
mean wind direction	   60 deg		   45 deg	        - 15 deg 
anemometer		  .50 volts (1800 rpm)	  141 bits		
			  .25 volts (900 rpm)	   68 bits
	

	* Wind speed simulated by calibration voltage


Modifications:
	
	1. Reflective temperature probe shroud and insulating bushing installed.
	2. Low output generator anemometer installed.  Voltage appears in frame 7 word 1.
	3. Minimum thermometer installed.

Comments:

	1. Power consumption 12 mA at idle; about 1 A at transmit.