User's Manual

English
47
PROGRAMMING FEATURES
WEATHER FEATURE (not for RDU4103+)
The RDX radio weather mode can be
programmed to operate and receive weather
channels that are broadcasted by the National
Weather Radio (NWR). The National Weather
Radio system is a nationwide network of radio
stations (more than 1000 stations in United
States) that broadcast continuous weather
information for the public. The NWR
broadcasts all types of weather service
warnings, watches, forecasts and other hazard
information. The NWR can also broadcast non-
weather alerts such as national security,
natural, environmental, and public safety in
conjunctions with the Emergency Alert System
(EAS).
The RDX radio weather feature can detect
weather alerts/warnings that are broadcasted
by NWR. The RDX radio can be programmed
to detect the analog tone or digital-over-audio
protocol. The analog tone is a 1050 Hz tone
(Warning Alarm Tone), which is issued for 10
seconds immediately before the warning
message by the NWR transmitter. When RDX
radio detects the Warning Alarm tone, it
unmutes audio and allows the user to hear the
weather alert message. As for digital-over-
audio protocol, it is a newer technology called
Specific Area Message Encoding (SAME) that
allows weather radio to receive digital data
stream about the type of weather events,
timing, duration, and location. When RDX
radio detects these special warnings, the radio
can be programmed to automatically generate
a loud tone, enable LED indicator, and display
“hazard” status on the display. With the
SAME technology, the RDX radio weather
mode can be programmed to detect the type
of weather warnings or watches for a specified
the county or counties.
Further information about the National Weather
Radio system such as network updates,
transmitter coverage maps, and SAME event
DRAFT 1