PARTS A & B INDEX 
Preparation for sounding--B2.1 
Pressure: --B5-3-3eL 
Contact value--B4-11.3 
Plotting on adiabatic charts-- 
B5-4.1 
Pressure altitude curve: --B5-10 
Doubtful--B5-10.2, B5-10.3 
Pressure contact setting: --B2-15, 
Be-15.5 
Entry on forms--B4-4.3 
Psychrometer, ventilated or sling-- 
Bu=} 1 
Psychrometer baseline readings-- 
Be-7 
Rabal--Al-2.4 
Radar wind--Al-2.6 
Radiosonde: 
Preparation for kaseline check-- 
Be=2 
Exposure before release--B2-18 
Radiosonde, inspection of:--Bl-1 
Baroswitech section--B1l-1.4 
Humidity section--Bl-1.3 
Inspection stamp (WB)--B1-1.8 
Relay--B1l-1.5 
Separate transmitter unit--Bl-1.6 
Temperature section--Bl-1.2 
Radiosonde, testing the:--Bl-2 
High reference--Bl-2./ 
Humidity--B1l-2.10 
Hypsometer--B1-2.9 
Low reference--Bl1l=-2.5 
Power supply--Bl-2.1 
Preparation--B1l-2.2 
Radio-frequency--B1-2.3 
Relay defects--Bl-2.11 
Signal--Bl-2.4 
Stability check--B1-2.6 
Temperature--B1-2.8 
Radiosonde Computation Tables (WBAN)-- 
Ah-1.1 
Radiosonde Frequency--A2-2 
Radiosonde instruments--A2-1 
Radiosonde system--Al-2./ 
Raob messages=-B5-15 
Rawinsonde balloons--A3-1 
1-1-69 
A&B-3 
Rawinsonde system: --Al-1 
Components differing from the 
basic rawinsonde system--Al-2 
Automatic wind and height-- 
Al-2.5 
Hypsometer--Al1-2.1 
Rabal--A1-2.4 
Radar wind--Al-2.6 
Radiosonde system--Al-2./ 
Transponder--Al=-2.2 
Transponder hypsometer--Al-2.3 
Rawin termination data--B5-3.3.6 
Recorder paper, conservation of-- 
Be-6 
Recorder record: --B4-5 
Evaluating the--B-7 
Folding of--B4-22 
Recording low ordinate values 
B4-5 23 
Recorder zero--B4-5.2 
Setting low reference--B4-5.1 
Relative humidity: 
Baseline-check--B2-5.3.2 
Evaluators--B2-10 
CPD blocks--B5-11.3 
Data blocks-=-B5=-343.3 
In baseline-check box --B2-5, 2 
Ordinate value=-B4-15 
Plotting on adiabatic chart-- 
B5-4 4 
Significant levels--B4-6.7 
Release: 
At military establishments (AF ,N) 
--B4-2.4 
At non-controlled airports (WB)-- 
B4-2.3 
At or near controlled airports 
(WB )--B4.-2.2 
In high winds--B4-3.6 
In light winds--B4-3.5 
Marking the--B4-3.4 
NOTAMS (WB)--B4-2.1 
Notices--B4-2 
Precautions--B4-3.1 
Priority of balloon--B4-1.2 
Procedures--B4-3.3 
FMH#3 
