Siemens SIMATIC RF610T ATEX System Manual page 303

D D irectional radiation pattern in the ETSI frequency band
Pattern of the vertical plane of the antenna
Pattern of the horizontal plane of the antenna
Figure 6-36 Directional radiation pattern of RF642A in the ETSI frequency band
SIMATIC RF600
System Manual, 06/2019, J31069-D0171-U001-A22-7618
Antennas
6.5 SIMATIC RF642A
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