Figure 7. LIGHTWEIGHT MOBILE STATION. In suitable climates the station equipment 
can be housed in a tent. The illustration shows a master station comprising 300-watt transmitter 
and double control unit (Hydrographic Survey Chain, Japan). 
  
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Figure 8. SAHARA DESERT OIL SURVEY. Skidded hut containing one station being placed 
in position (Photo by courtesy of C.P.A.).