Regulations For Uhf Frequency Bands In The Usa - Siemens SIMATIC RF660 System Manual

RF600 system planning
4.5 Regulations applicable to frequency bands
4.5.2

Regulations for UHF frequency bands in the USA

USA
FCC (Federal Communications Commission)
• UHF band: 902 to 928 MHz
• Radiant power: max. 4 W (EIRP)
• Number of channels: 50
• Frequency hopping
Frequency hopping
This technique should prevent mutual interference between readers. The reader changes its
transmission channel in a random or programmed sequence (FHSS - Frequency Hopping
Spread Spectrum). The 50 available channels mean that the probability is low that two
readers will be operating on the same frequency
4-18
System Manual, 09/2005 Edition, J31069 D0171-U001-A0-7618,
RF600