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f .3910.3A <br /> 10/ 19/83 <br /> d. Warning Signs. The standard RF radiation warning sign shown in I <br /> Figure 3-2 shall be posted at the entry to the antenna deck of each long <br /> range and short range radar. This is a precautionary measure to remind <br /> personnel and warn visitors that the PEL for RF radiation can be exceeded <br /> in the vicinity of the radiating antenna. It does not mean that entry to <br /> the antenna deck will result in overexposure but that in this area RF <br /> energy is not as confined as it is in other parts of the radar system and <br /> that proper precautions should be observed. <br /> FIGURE 3-2 . RF RADIATION WARNING SIGN <br /> . (SID) <br /> RED BACKGROUND <br /> `ALUMINUM LETTERS <br /> D WARNING \ ISDI• <br /> RADIO-FREQUENCY RADIATION HAZARD t <br /> 2D <br /> INSERT WARNING DATA OR 1D <br /> INSTRUCTIONS N MS AMA <br /> I <br /> ALUMINUM <br /> BORDER D /ALUMINUM LETTERS <br /> 2D LACK BACKGROUND <br /> The RF warning sign is available in two sizes; i.e. , <br /> Small, 9905-01-069-6246, Unit of Issue Each (EA) and <br /> Large, 9905-01-069-2315, Unit of Issue Each (EA) <br /> 36. RADAR SYSTEMS. <br /> a. Hazards. All radar systems operated and maintained by the FAA <br /> produce RF/microwave radiation. Under normal operating conditions, it is <br /> virtually isolated from the workplace and its occupants. Hazardous <br /> levels are encountered only in the vicinity of the antenna; i.e. , between <br /> the feedhorn and the antenna and out along the projected beam. The <br /> hazardous region terminates at a point on the beam where the radiation <br /> Chap 3 <br /> Page 28 Par 35 <br />