Regulations For Uhf Frequency Bands In China - Siemens SIMATIC RF600 System Manual

RF600 system planning
4.6 Regulations applicable to frequency bands
4.6.6

Regulations for UHF frequency bands in China

Regulations for UHF frequency ranges in China
FCC subband (Federal Communications Commission)
● UHF band: 920.125 to 924.875 MHz in 250 kHz channel blocks.
● Radiated power: max. 2 W (ERP)
● Number of channels: 16 to max. 2 W (ERP), 20 to max. 0.1 W (ERP)
● Frequency hopping
Channel assignment
Sub bands
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) and with 20
channels that can be used simultaneously at up to 100 mW, the probability of two readers
operating on the same frequency is reduced.
76
Frequency range
920.125 to 920.375
MHz
920.625 to 924.375
MHz
924.625 to 924.875
MHz
System Manual, 05/2012, J31069-D0171-U001-A13-7618
Power
0.1 W ERP
2.0 W ERP
0.1 W ERP
SIMATIC RF600