Siemens Simatic RF600 System Manual page 77

Frequency hopping
This technique is intended to prevent mutual interference between readers. The reader
changes its transmission channel in a random or programmed sequence (FHSS). With 16
available channels that can be used simultaneously at up to 2000 mW (ERP), the probability
of two readers operating on the same frequency is reduced.
This revision of the European standard EN 302208 also supports RFID systems with
numerous readers operating simultaneously. Within the frequency spectrum, 4 exclusive
RFID channels are defined.
Regulations for UHF bands according to EN 302208 as of V1.2.1
ETSI (European Telecommunications Standards Institute)
● UHF band: 865 to 868 MHz
● Radiated power: max. 2 W (ERP)
● Channel bandwidth: 200 KHz, channel spacing: 600 kHz
● Number of channels: 4
– 865.7
– 866.3
– 866.9
– 867.5
Channel assignment
The UHF band from 865 to 868 MHz with 4 RFID channels occupies:
SIMATIC RF600
System Manual, xx/2014, J31069-D0171-U001-A15-7618
RF600 system planning
4.6 Regulations applicable to frequency bands
77