Handheld and mobile
For voice conversations, D-STAR repeaters act just like familiar
analog repeaters – everyone listening can hear your
transmissions. Because your call sign is incorporated into
every transmission, the D-STAR repeater “registers”
your call sign and shares it around the D-STAR system. If
you travel into a new D-STAR repeater’s coverage area,
register with a short transmission and your location will
be quickly updated around the D-STAR network. This allows
you to call someone registered with any other D-STAR repeater,
no matter where that may be. If you call someone registered
elsewhere, your voice will be routed to the appropriate repeater
in digital form, where it is then heard just as you would
expect if you were both using the same repeater!
Many data communications needs don’t require high-speeds,
particularly for emergency communications. Status reports,
damage assessment, shift changes, resource requests –
all they take are a few keystrokes. D-STAR combines voice
and low-speed data into a single channel simultaneously. There’s
no need for a separate TNC and radio. Just connect your laptop
or PDA and go.
A high-speed D-STAR connection looks just like an Ethernet
connection to your laptop or other network device. Why run
cables for a temporary or portable installation when mobile
rigs will do the job? Connect across miles instead of meters!
If a D-STAR repeater offers a broadband Internet connection,
you have worldwide connectivity through your radio.
communications managers can put D-STAR’s high-speed
data capabilities to work building systems that support their
“served agency” with IT tools they understand
and expect; email, file transfer, and Web browsing. Spreadsheets,
graphics, maps, lists, Web pages – all flow easily through
the D-STAR system (see figure 3).
a picture is worth a thousand words, why not use D-STAR to
paint the image? Weather and traffic information from the
Internet are available via a D-STAR repeater’s broadband
connection. Add a digital camera to a laptop and your D-STAR
radio becomes a Web cam. Emergency management is greatly enhanced
when images are available. The next time your group helps
out on race day, D-STAR can make it possible to send photos
at the finish line, on the course – anywhere your operators