Cisco Cisco Aironet 3500p Access Point Guía De Información

Cisco Aironet 3600 Series Access Point and New
FCC Guidelines

Document ID: 113545

Contents

Introduction

We are seeing some differences in RF power between the 3500 Series Access Point and the new 3600 Series
Access Point. It seems that power might be reduced in the UNII−1 band (channels 36−48) 5150−5240 MHz.
Why?
Related Information

Introduction

This document provides information about the differences in RF power between the Cisco Access Point (AP)
3500 and the AP 3600.

This document provides insight on FCC rules and use of Power Spectral Density (PSD) requirements that
causes a slight reduction in RF power as the new AP 3600 complies with the new FCC rules.

Refer to Cisco Technical Tips Conventions for more information on document conventions.

Q. We are seeing some differences in RF power between the 3500 Series
Access Point and the new 3600 Series Access Point. It seems that power
might be reduced in the UNII−1 band (channels 36−48) 5150−5240 MHz.
Why?

A. Traditionally, the UNII−1 band has always had lower RF power restrictions placed on it
because these frequencies are set aside for indoor use only in the United States. During the
development of the AP 3600 some new FCC guidelines on RF emissions took effect, which
changed the RF power requirements.

Note: The AP 3600 is the first commercial Access Point to be certified under these new
guidelines. Review this Wi−Fi spectrum for a better understanding:

Figure 1 − This chart shows the Wi−Fi spectrum and those services that are primary
(licensed users). Source: http://www.ntia.doc.gov/osmhome/allochrt.PDF