Antennas
6.7 SIMATIC RF660A
SIMATIC RF600
System Manual, 11/2018, J31069-D0171-U001-A21-7618
305
Radiation diagram (horizontal)
Europe (ETSI)
The radiation diagram is shown for horizontal alignment and for a center frequency of 865
MHz. Horizontal antenna alignment is provided when the TNC connection on the antenna
points vertically up or down.
The radiating/receiving angle of the antenna is defined by the angle between the two -3 dB
points (corresponding to half the power referred to the maximum performance at a 0° angle).
The optimum radiating/receiving angle is therefore approximately ±30 degrees.
Figure 6-49 Directional radiation pattern of the antenna (at 865 MHz, horizontal alignment)
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