Kenwood TM-D700A Datasheet

TM-D700A

DATA COMMUNICATOR

144/440MHz Dual Bander

One of the greatest pleasures of exploration is being able to communicate each

new discovery. And Kenwood’s TM-D700A Data Communicator allows you to do

just that. This FM dual-band mobile transceiver harnesses APRS

technologies to provide world-class communications for the Great Outdoors.

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and GPS

Just as the Internet has ushered in

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a new era of computing, APRS

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APRS

(Automatic Packet/Position Reporting System)

has added a new dimension to

radio communications. And you

can experience it all with

Kenwood’s new TM-D700A

As smart as Kenwood’s new TM-D700A is — with its
extra-large amber & black display (reversible) — it is
even smarter inside. This new-generation mobile
transceiver features a built-in TNC to offer a wide
range of data communications options, including
simple packet operation using the AX.25 protocol. But
above all the TM-D700A is fully equipped to make the
most of APRS®— the Automatic Packet/Position
Reporting System.

If you are new to APRS
Using Ham radio packet communications network
software developed in 1992 by Bob Bruninga (WB4APR),
you can use your desktop or laptop computer to
provide a colorful map display of other APRS®operators
in your area. You can not only see where they are
and where they are going, but also exchange text
messages with them. Not surprisingly, there are now
thousands of users in the US alone, and through the
Internet you can even check operations in areas far
beyond the range of your own equipment. APRS®is
a worldwide phenomenon that is rapidly gaining
popularity. But what makes the Data Communicator
so special is that it enables APRS®operation without
requiring a computer.

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, prepare to be surprised.

.

The TM-D700A has everything you need to explore the exciting
possibilities of APRS
If you know your current position, you can manually input latitude
and longitude data for transmission to other members of your
group or to anyone using APRS
this for you automatically, and
ensure accuracy. When you
receive a friend’s coordinates,
you can display his latitude,
longitude, direction and distance
on your own Data Communicator.
Like all of the best ideas, in both
conception and execution
is beautiful in its simplicity.

Positional/directional data

With an NMEA-0183 compatible GPS receiver you can transmit your exact
position for automatic calculation of distance, current speed and heading.
Any of the last 4 digits can be masked for variable “position ambiguity” if
you wish to limit accuracy. You can also limit your own APRS
from a maximum range of 2,500 miles to just 10 miles.

Unprotocol

When you need to focus, this function allows you to control what data you
receive. Choose all calls, special (events), or alternate net (group code).

Versatile messaging

Transmission of position data can be accompanied by position comments
(15 selectable settings), 5 programmable status texts (up to 28 characters),
icons, and bulletins. For added messaging flexibility, individual alpha
messages (up to 64 characters) can also be sent. Internal memory can
store up to 16 transmitted/received messages.

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— and you don’t even have to own a computer.

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. Of course, a GPS unit will do

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APRS

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reception

Example A: with GPS receiver & laptop

TM-D700A

Station list

Received APRS®data can be stored in up to 40 memory channels for
listing on the LCD display. You can pick any one to see full details of a
station’s status (fixed, moving, weather, etc.), as well as its position and
heading.

Grid square locator
TX interval (0.2/0.5/1/2/3/5/10/20/30 min.)
Packet path selection with Digipeat
Weather station & Power Height Gain (PHG) data reception
Digipeat function capability
Auto Message Reply
Audible APRS
(requires VS-3)
Waypoint position data output

GPS receiver

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message receive (call sign) notification

TM-D700A

Laptop