Siemens SIMATIC RF610T ATEX System Manual page 264

Antennas
6.3 SIMATIC RF620A
D D irectional radiation pattern of the RF620A (FCC) on metallic mounting surface (15 cm x 15 cm)
Figure 6-20
264
Pattern of the vertical plane of the antenna
Pattern of the horizontal plane of the antenna
Directional radiation pattern of the RF620A (FCC) on metallic mounting surface
System Manual, 06/2019, J31069-D0171-U001-A22-7618
SIMATIC RF600