Audio-Technica ATW-A49 Manual


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UHF WIDEBAND LPDA ANTENNAS, 440-900 MHz
Audio-Technica ATW-A49 UHF wideband LPDA (Log Periodic Dipole
Array) antennas provide enhanced signal pickup for UHF wireless systems
operating over 440-900 MHz, a remarkable 2-to-1 frequency range. This
bandwidth includes all UHF TV channels. Supplied in pairs, these directional
antennas are ideal for extending the operating range and reliability of
diversity UHF wireless systems. They also eliminate the need for multiple
frequency-specic antennas.
The ATW-A49 is designed for applications requiring increased distance
between the transmitter and the receiver - as in stadiums, concert tour
venues, theater and large performance areas, or any area where line-of-
sight may be obstructed. This ruggedly constructed paddle-style antenna is
equally suited for installed and portable applications.
The antennas are compatible with virtually all UHF wireless receivers
and provide a directional coverage pattern with a typical beamwidth of
90 degrees. They offer approximately 6 dB of RF gain improvement over
standard receiver whip antennas. Antenna impedance is 50 ohms.
The antennas are constructed of industrial-grade copper-clad epoxy
berglass. This heavy-duty, durable construction is engineered to resist the
effects of corrosion, UV degradation and vibration, providing long life and
stable performance under difcult operating conditions. High-quality, low-loss
BNC connectors are positioned to minimize RF cable strain. The antennas
are supplied completely assembled.
Location
For best performance, the antennas should be mounted:
- Above head-height,
- In direct line-of-sight to the likely transmitter location(s).
- At least 1m away from eash other, and
- At least 1m away from any large metal objects or sources of interference.
In addition, the length of RF cable run to the receiver should be minimized.
Some experimentation with antenna positioning may be r equired to
determine the best locations under typical conditions.
Important: While the antennas themselves are weather resistant, outdoor
use should be temporary only and under dry conditions. Any moisture or
corrosion in BNC cable connectors or associated cables can greatly affect
RF performance at these frequencies.
FORM No. ATGC-L0061-06-E
Machida Tokyo Japan
SPECIFICATIONS
ANTENNA TYPE Log Periodic Dipole Array (LPDA)
OPERATING BANDWIDTH 440 MHz - 900 MHz
GAIN 6 dB typical
IMPEDANCE 50 ohms typical
VSWR ≤ 1.7:1
POLAR PATTERN Elliptical, 90° acceptance, typical
POLARZATION Vertical (when mounted vertically)
NUNBER OF ELEMENTS 9
TERMINATION TYPE Fixed right-angle BNC female
Connector is positioned to minimize
cable strain
WEIGHT 326 g
DIMENSIONS 268 mm L x 285 mm H x 25 mm D
MATERIAL Copper-clad epoxy berglass
FINISH Black matte
MOUNTING °⅝”-27 thread; adaptor can swivel 90
Optional Accessories:
7.5RG58BNC RG58-type antenna cable, 7.5m long, terminated with
BNC connectors.
20RG8BNC RG8-type antenna cable, 20m long, terminated with
BNC connectors.
30RG8BNC RG8-type antenna cable, 30m long, terminated with
BNC connectors.
50RG8BNC RG8-type antenna cable, 50m long, terminated with
BNC connectors.
ATW-49CB 2-way active antenna broadband combiner kit.
ATW-49SP 2-way active antenna broadband splitter kit.
ATW-B80 UHF in-line +3dB / +10dB ampliers.
Mounting
The ATW-A49 mounts to a ⅝”-27 thread tting. The antenna mount is designed
to allow for vertical tilt adjustment through a 90° range. Horizontal adjustment
is accomplished by rotating the antenna in the mounting fitting. For portable
applications, the antenna may be installed on a standard -27 t hread
microphone stand.
Connections
After the antennas have been installed, connect them to the antenna inputs of
either a wireless receiver or an antenna distribution system. Use RG58-type
cable for cable lengths of up to 7.5m. For cable lengths greater than 7.5m, RG8-
type low-loss RF cable is recommended. RG8-type cable lengths over 50m may
cause significant signal loss. Because cable requirements vary considerably
from one installation to another, RF cable are not included. High-quality, pre-
terminated RF cables available from Audio-Technica will be found listed on the
“Optional Accessories.”


Produkt Specifikationer

Mærke: Audio-Technica
Kategori: Ikke kategoriseret
Model: ATW-A49

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