Siemens SIMATIC RF600 System Manual page 140

Antennas
6.1 RF660A antenna
USA (FCC)
The radiation diagram is shown for horizontal alignment and for a center frequency of 915
MHz.
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 ±35 degrees.
Figure 6-3 Directional radiation pattern of the antenna (at 915 MHz, horizontal alignment)
Ordering data
Description
RF660A antenna for Europe incl. mounting plate (865-868)
RF660A antenna for China and the USA incl. mounting plate
(902-928)
Accessories
Description
Antenna mounting kit
Connecting cable between reader and
antenna
140
Machine-Readable Product Code
6GT2812-0AA00
6GT2812-0AA01
Machine-Readable Product Code
6GT2890-0AA00
10 m 6GT2815-0AN10
20 m 6GT2815-0AN20
System Manual, 10/2009, J31069-D0171-U001-A8-7618
SIMATIC RF600