Datron AT-7000B brochure

AT7000B

125W Antenna Tuners

The AT7000B is a 125W HF automatic antenna tuner specifically
designed to interface with Datron's TW7000-series HF transceivers
to tune whip and long-wire antennas. The tuner is designed for
operation under the severe environmental conditions that can
be encountered in mobile and shipboard usage. It is contained
in a rugged case, which is water resistant. It can be mounted in
any attitude, but should be located as close as possible to the
radiating portion of the antenna for maximum system efficiency.
The tuner comes with a set of brackets for convenient mounting
to any surface in any orientation.

A 100 Channel memory is standard in the tuner in order to permit
scanning, ALE, and other silent tune applications. After each
channel has been initially tuned, it “remembers” the settings for
that particular channel and automatically reverts to them each
time that channel is selected. Channel tuning time in memory
mode is less than 10 ms.

The AT7000B is designed to interface with the associated Datron
radio via a RS485 serial port. This bi-directional port allows
high-speed communications with the radio, enabling rapid
selection of previously tuned channels from the tuner memory.

The AT7000B is designed primarily for use with end-fed, unbalanced
antennas (whips and long wires).

It will effectively tune almost any antenna of this type within the
specified frequency range provided a good ground system is
used with the tuner.

• Completely automatic

antenna tuning

• 125W RF power

handling

• 100 channel memory

for rapid tuning - ALE
and silent tuning
applications

• Tunes whips and long

wire antennas

• Control interface to

TW7000-series
transmitters and
transceivers

• Water resistant

(based on MIL-STD-810)

• Mounting in any

attitude

The AT7000B is designed to be installed in a specific location and
left there indefinitely. It will provide continuous, reliable operation
without requiring periodic maintenance of any kind. It has no
variable components, requires no adjustment during setup, and
needs no re-alignment over time.

Datron World Communications, Inc.

AT7000B

SPECIFICATIONS

General

RF power handling capability 125W, PEP or average
Frequency range 1.6 to 30 MHz
Tuning range - whips and wires with 10 foot whip: 2.5 - 30 MHz
minimum specified length 16 foot whip: 2 - 30 MHz

32 foot whip: 1.6 - 30 MHz
75 to 150 foot long wires: 1.6 - 30 MHz

NOTE: effective tuning depends on setting up a good

ground system in conjunction with the antenna
RF tune power 10W (typical)
Tune time 3 - 5 seconds, first tune (typical)

10 ms, memory tune (typical)
Input impedance 50 Ohms
Power requirements 12Vdc, 1.8A , max.
Memory channels 100
Tuning accuracy 1.5:1 VSWR (typical)
Continuous duty operation (FSK) The minimum antenna lengths stated here must be

adhered to:

•75ft (2-30 MHz)

•32ft (3-30 MHz)

•16ft (5-30 MHz)

•10ft (7-30 MHz)

Mechanical, Environmental

Size 3.0” (7.62cm) x 11.0” (27.9cm) x 14.0” (35.6) (H x W x D)
Weight 6.2 lbs, (2.8 kg)
Temperature (operating) -30 to +60 degrees C (ambient inside case)

NOTE: this temperature can easily be exceeded if the case

is exposed to direct sunlight. For FSK operation, it is important

that the tuner is installed so that the case is not exposed to

direct sunlight.
Shock, vibration Based on MIL-STD-810
Immersion Water resistant; immersion tested to 3 feet

Controls and Indicators

Connectors RF input, control input, RF output, grounding lug

Note: all specifications subject to change without notice Made in the USA

Datron World Communications, Inc.

3030 Enterprise Ct. Vista, CA, USA 92081
Tel: [phone]
Fax: [phone]