7
ADL Vantage/ADL Vantage Pro/ADL Vantage 35
WARNING:
Failure to transmit your station identification is in violation of FCC regulations. If you are
operating outside the United States, check with the local authorities if you need to transmit a call sign.
Carrier Sense Multiple Access (CSMA)
CSMA is a technology implemented in the radios to meet the United States Federal
Communication Commission (FCC) transmitter requirements. It is illegal to transmit
on any UHF radio within the United States without CSMA enabled. CSMA holds off the
radio transmission if the frequency is currently being used by a co-channel user. On
occasion, you may note that the radio broadcasts stop for short periods of time. Most
often, this is a case of co-channel interference and the radio is holding off broadcasts
due to the FCC-mandated CSMA.
GPS RTK equipment is designed to function with intermittent gaps in the data. Heavy
co-channel use may limit the ability of the radio to transmit the required information.
In areas of heavy co-channel usage, try changing channels to a less used frequency.
