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

4.6.3

Regulations for UHF frequency bands in Thailand

FCC (Federal Communications Commission)
● UHF band: 920.25 to 924.75 MHz
● Radiant power: max. 4 W (EIRP)
● Number of channels: 10
● Frequency hopping, dwell time 2 seconds per channel
Frequency hopping
This technique should prevent mutual interference between readers. The reader changes its
transmission channel in a random or programmed sequence (FHSS). 10 available channels
mean that the probability is low that two readers will be operating on the same frequency.
SIMATIC RF600
System Manual, 10/2009, J31069-D0171-U001-A8-7618
4.6 Regulations applicable to frequency bands
RF600 system planning
67