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Professional UHF
Wireless Systems
ATW-A49 UHF Wideband LPDA Antennas, 440-900 MHz
Installation and Operation
CAUTION! For personal safety and reliable system operation,
make certain that (1) the antennas are mounted clear of any
physical contact with individuals, (2) any supporting structures
used are stable, even if moved or bumped, and (3) the antennas
are securely attached to the supporting structures.
In addition, to reduce the risk of electric shock, do not allow the
antennas or their supporting structures to come in contact with
any exposed wiring or other sources of electricity.
Introduction
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 (14–69, 470–806
MHz). 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-specific
antennas.
-A49 is designed for applications requiring increased distance
TW
The A
between the transmitter and the receiver—as in stadiums, concert
tour venues, theater and lar
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 ar
fiberglass. This heavy-duty, durable construction is engineered to resist
the effects of corrosion, UV degradation and vibration, providing long life
and stable performance under difficult operating conditions. High-quality,
low-loss BNC connectors ar
The antennas are supplied completely assembled.
e constructed of industrial-grade copper-clad epoxy
ge per
e positioned to minimize RF cable strain.
mance ar
for
eas, or any ar
ea wher
e
Installation
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 3' (1 m) away from each other, and
• At least 3' (1 m) 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
required 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.
Mounting
The ATW-A49 mounts to a 5/8"-27 threaded fitting. 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 por
be installed on a standard
Connections
After the antennas have been installed, connect them to the antenna
inputs of either a wir
Use RG58-type cable for cable lengths of up to 25' (8 m). For cable
lengths greater than 25', RG8-type low-loss RF cable is recommended.
RG8-type cable lengths over 100' (30 m) may cause significant signal
loss. Because cable requirements vary considerably from one
installation to another
pre-terminated RF cables available from Audio-Technica will be found
listed on the back page under “Optional Accessories.”
eless r
, RF cables ar
table applications, the antenna may
5
/8"-27 thread microphone stand.
eceiver or an antenna distribution system.
e not included. High
-quality,
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Specifications
ATW-A49
Antenna Type Log Periodic Dipole Array (LPDA)
Operating Bandwidth 440 – 900 MHz
Gain 6 dB typical*
Impedance 50 ohms typical*
VSWR ≤ 1.7:1*
Polar Pattern Elliptical, 90° acceptance, typical
Polarization Vertical (when mounted vertically)
Number of Elements 9
Maximum Power Input Not specified (intended as receive
Termination Type Fixed right-angle BNC female
Weight 11.5 oz (326 g) each
Dimensions
Material
Finish Black matte
Mounting
* Within specified bandwidth
This device is in compliance with applicable CE standar
antenna only)
Connector is positioned to minimize
cable strain
10.55" (268 mm) L x 11.22" (285 mm) H
x 0.98" (25 mm) D
Copper-clad epoxy fiberglass
5
ead; adaptor can swivel 90°
/8"-27 thr
ds and regulations.
AC12 RG58-type antenna cable, 12' (3.65 m) long,
terminated with BNC connectors.
AC25 RG8-type low-loss antenna cable, 25' (7.62 m) long,
terminated with BNC connectors.
AC50 RG8-type low-loss antenna cable, 50' (15.24 m) long,
terminated with BNC connectors.
AC100 RG8-type low-loss antenna cable, 100' (30.48 m) long,
terminated with BNC connectors.
Optional Accessories
One-Year Limited Warranty
A
udio-Technica professional wireless systems purchased in the U.S.A. are warranted for one year from date of purchase by Audio-Technica U.S., Inc. ( A.T.U.S.) to be free of defects
in materials and workmanship. In event of such defect, product will be repaired promptly without charge or, at our option, replaced with a new product of equal or superior value
if delivered to A.T.
This war
unauthorized repair or modification, or removal or defacing of the product labeling.
For return approval and shipping information, contact the Service Dept., Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224.
Except to the extent precluded by applicable state law,
or fitness for particular purpose expires when this warranty expires.
This warranty gives you specific legal rights, and you may have other rights which vary from state to state.
U.S. or an Authorized Service Center, prepaid, together with the sales slip or other proof of purchase date.
ranty excludes defects due to normal wear, abuse, shipping damage, or failure to use product in accordance with the instructions. This warranty is void in the event of
A.T.U.S. will have no liability for any consequential, incidental, or special damages; any warranty of merchantability
Prior approval from A.T
.U.S. is required for return.
Outside the U.S.A., please contact your local dealer for warranty details.
Visit our Web Site: www.audio-technica.com
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224 330/686-2600 www.audio-technica.com
P516 23 ©200 3 Audio-Technica U.S., Inc. Printed in U.S.A.