Specifications

Radio Interface
RoamAbout RBT-4102 Wireless Access Point Configuration Guide 4-59
– Right.Theradioonlyusestheantennaontherightside(thesideclosesttotheaccesspoint
LEDs).Selectthismethodwhenusinganoptionalexternalantennathatisconnectedto
therightantennaconnector.
– Left.Theradioonlyusestheantennaontheleftside(theside
farthestfromtheaccess
pointLEDs).Theaccesspointdoesnotsupportanexternalantennaconnectiononitsleft
antenna.Therefore,thismethodisnotvalidfortheaccesspoint.
• AntennaIDselectstheantennatobeusedbytheaccesspoint;eithertheintegrat eddiversity
antennas(thedefaultantenna) 
oranoptionalexternalantenna.Theoptionalexternalantennas
(ifany)thatarecertifiedforusewiththeaccesspointarelistedinthedrop‐downmenu.
SelectingthecorrectantennaIDensuresthattheaccesspoint’sradiotransmissionsarewithin
regulatorypowerlimitsforthecountryofoperation.Whenan
externalantennaisselected,the
AntennaControlMethodmustbesettoRight.Default:DefaultAntenna
FCCExternalAntennaconfigurationselections(checktheregulatoryinformationforyour
country):
–FortheRBT4K‐AG‐IA:2.4–2.5GHzOmnidirectionalIndoorRangeExtender,
5.15‐5.35GHzOmnidirectionalIndoorRangeExtender,5.725–5.825GHzOmnidirectional
IndoorRange
Extender
–FortheRBTES‐AH‐M10M:5.725–5.825GHzOmnidirectional,outdoor
–FortheRBTES‐AH‐P23M:5.725–5.825GHzDirectional,outdoor
ETSIExternalAntennaconfigurationselections(checktheregulatoryinformationforyour
country):
–FortheRBT4K‐AG‐IA:2.4–2.5GHzOmnidirectionalIndoorRangeExtender,
5.15‐5.35GHzOmnidirectionalIndoorRangeExtender,5.725–5.825GHzOmnidirectional
Indoor
RangeExtender
–FortheRBTES‐BG‐M08M:2.4–2.5GHzOmnidirectional,outdoor
–FortheRBTES‐BG‐S1490M:2.4–2.5GHzSectorPanel,outdoor
–FortheRBTES‐AM‐M10M:5.125–5.35GHzOmnidirectional,outdoor
–FortheRBTES‐AW‐S1590M:5.25–5.35GHzAdju stableSector‐outdoor,5.4‐5.7GHz
AdjustableSector‐outdoor
• RadioChannelspecifiesthechannelnumber
fortheoperatingradiochannelintheaccesspoint.
–The802.11aradiochannelthattheaccesspointusestocommunicatewithwirelessclients.
Whenmultipleaccesspointsaredeployedinthesamearea,setthechannelon
neighboringaccesspointsatleastfourchannelsaparttoavoidinterferencewitheach
other.

Note: The Antenna ID must be selected in conjunction with the Antenna Control Method to
configure proper use of any of the antenna options.
Note: The RBT-4102-EU has been approved for use with these external antennas. Some
countries restrict or require a license when using outdoor antennas. Please refer to the
conditions of use located in the front of the Enterasys RoamAbout Wireless RBT-4102
Installation Guide.
Note: The access point provides a channel bandwidth of 20 MHz, and supports the maximum
number of channels permitted by local regulations.