Siemens SIMATIC RF610T ATEX System Manual page 232

Antennas
6.1 Overview
Table 6- 2 Characteristics of the RF640A and RF642A antennas
C C haracteristics
Material
Frequency range
Impedance
Antenna gain
VSWR (standing wave ratio)
Polarization
Radiating/receiving angle
Connector
Mounting type
Degree of protection
Permissible
ambient temperature
Table 6- 3 Characteristics of the RF650A and RF680A antennas
C C haracteristics
Material
Frequency range
Impedance
Antenna gain
VSWR (standing wave ratio)
Polarization
Radiating/receiving angle
Connector
Mounting type
Degree of protection
Permissible
ambient temperature
232
R R F640A
865-868 MHz 902-928 MHz
4 dBi (7 dBic) 4.3 dBi (7.3 dBic)
Max. 1.25
RH circular
Horiz. plane: 80° Horiz. plane: 75°
Vertic. plane: 75° Vertic. plane: 85°
4x screws M4 (VESA 100 fastening system)
R R F650A
865-868 MHz 902-928 MHz
4 dBi (7 dBic) 3.5 dBi (6.5 dBic)
Max. 1.45
RH circular
Horiz. plane: 83° Horiz. plane: 90°
Vertic. plane: 70° Vertic. plane: 76°
4x screws M4 (VESA 100 fastening system)
PA 12, silicone-free
865-868 MHz
50 ohms nominal
6 dBi
Max. 1.6
Horiz. plane: 75°
Vertic. plane: 70°
RP-TNC coupling
IP65
-25 °C ... +75 °C
Pocan DPCF2200, silicone free
865-868 MHz
50 ohms nominal
3.5 dBi (6.5 dBic)
Horiz. plane: 85°
Vertic. plane: 80°
RP-TNC coupling
IP65
-25 °C ... +75 °C
System Manual, 06/2019, J31069-D0171-U001-A22-7618
R R F642A
902-928 MHz
7 dBi
Max. 1.4
Linear
Horiz. plane: 80°
Vertic. plane: 70°
R R F680A
902-928 MHz
3.5 dBi (6.5 dBic)
Max. 1.45
RH circular / linear
Horiz. plane: 90°
Vertic. plane: 77°
SIMATIC RF600