Shure WA380 User Guide

WA380 HALF–WAVE ANTENNA

The Shure Model W A380 Half–Wave Antenna provides up
to 3 dB more gain than the standard quarter–wave antennas
supplied with Shure wireless microphone receivers. When
remotely locating an antenna away from the receiver, the
WA380 Half–Wave Antenna must be used instead of the
standard quarter–wave antenna.

This WA380 Antenna Kit consists of the following items:

S Half–Wave Antenna (multi–section, telescoping)
S Right Angle Adapter
S Mounting Bracket
S Straight Adapter with hexagonal nuts

Note: Diversity receivers require two WA380 antennas.
When two WA380 antennas are used, Shure recommends
that at least one antenna be remotely located using an ex­tension cable.

How to Select the Proper Antenna

The WA380 is available in three configurations, which cor­respond to three frequency bands, as shown below:

S WA380A 169 to 185 MHz (33.5 in., 85 cm). . . . .

S WA380B 185 to 200 MHz (31 in., 78.5 cm). . . . .

S WA380C 200 to 230 MHz (28.5 in., 72.5 cm). . . . .

For best performance, choose the antenna that corre­sponds to your system’s operating frequency. If you are u s­ing the WA380 Antenna with a Shure Model WA400 or
WA404 Antenna Distribuiton System, select the antennas
as follows:

S If the frequencies are all in the same band, select the an-

tennas for that band.

S If the frequencies span two adjacent bands, select anten-

nas for the lower frequency band.

S If the frequencies span all three bands, use one WA380A

Antenna and one WA380C Antenna.

Mounting the WA380 Antenna Directly to the Receiver

To mount the WA380 antenna to the receiver, proceed as
follows:

1. Attach the right–angle adapter to the antenna connector.

2. Attach the upward–facing female end of the adapter to the
antenna connector on the receiver.

3. Extend the antenna as far as possible to ensure maximum
reception.

Using the WA380 as a Remote Antenna

When locating an antenna away from the receiver, the
WA380 Half–Wave Antenna must be used instead of the
standard quarter–wave antenna. For best results, the anten-

Model WA380 User Guide

WA380 ANTENNA MOUNTING

FIGURE 1

nas must be separated by at least one wavelength (1.5 m [60
in]) or more.

Important: Avoid mounting the antennas along metal
beams, or metal–studded walls, or other metal surfaces un-

less they extend above, or perpendicular to, any metal ob­jects.

To install the WA380 antenna at a remote locaton, proceed

as follows:

1. Select a location for the bracket which will place the anten­na as high as possible and away from metal obstructions.
Make sure the receiver antenna can be seen from the
transmitter. (Placing the antennas behind non–metallic
curtains or stage sets is permissible).

2. Attach the bracket to the mounting surface and secure it
with mounting hardware. See Figure 1.

Note: Attachment hardware for the mounting bracket is
not included in this kit. Screws or bolts and nuts must be
obtained by the installer.

3. Remove one hex nut from the adapter and insert the
adapter in the bracket hole.

4. Reinstall the hex nut removed in Step 3, then tighten both
hex nuts to secure the adapter to the bracket.

5. Screw the antenna to the top of the adapter.

6. Attach one end of the cable assembly (not supplied with
this kit) to the bottom of the adapter and attach the other
end of the cable assembly to the receiver antenna con­nector.

2002, Shure Incorporated
27A8802 (BB)

Printed in Korea

Note: A coaxial cable with male PL–259 connectors at
each end must be used to connect the receiver to the an­tennas. RG–58U coaxial cable is appropriate for most sit­uations. If the antenna and receiver are separated by
more than 12.2 m (40 feet), use low loss cable (RG–8,
RG–213/U or equivalent).

7. Extend the antenna as far as possible to ensure maximum
reception.

Alternative Methods of Remote Antenna Placement

The remotely located antenna can be vertically mounted

using the following alternative methods (see Figure 2):

S A swivel adapter for 3/4” microphone handles (Shure A57

or equivalent) allows the WA380 antenna to be mounted
on a standard 5/8” microphone stand.

S The WA380 antenna can be suspended from an overhead

cable or metal beam using a piece of string or nylon line
(not wire) at least 381 mm (15 in) long.

S The WA380 antennas can be mounted on the front or rear

rails of a standard 19-inch equipment rack with the WA440
Antenna Rack Mount Kit.

ALTERNATIVE METHODS OF REMOTE ANTENNA PLACEMENT

FIGURE 2

Français

ANTENNE DEMI–ONDE MODÈLE WA380

L’antenne demi–onde modèle WA380 représente une op­tion alternative aux antennes quart d’onde fournies avec les
récepteurs des microphones sans fils. Elle fournit un gain
maximum supérieur de 3 dB à celui de l’antenne quart d’onde,
et doit être utilisée à un emplacement à distance lorsque le
récepteur est monté en bâti blindé d’équipement audio. Noter
que les récepteurs diversités ont besoin de deux antennes
WA380 (lorsque les antennes W A380 sont utilisées avec un
récepteur diversité, il est recommandé qu’au moins une an­tenne soit située à distance en utilisant un câble de rallonge
tel que le WA420).

Le WA380 comprend les pièces suivantes :

• Antenne télescopique, demi–onde

• Adaptateur à angle droit

• Support de montage

• Adaptateur droit avec écrous hexagonaux

Le WA380 est disponible en trois configurations, dépen-
dant de la fréquence de fonctionnement du système. Ces
trois unités sont :

WA380A 169 à 185 MHz (85 cm). . . . . . . . .

WA380B 185 à 200 MHz (78.5 cm). . . . . . . . .

WA380C 200 à 229 MHz (72.5 cm). . . . . . . .

Quand le Modèle WA404 ou WA400 Système de Distribu-
tion d’Antenne est utilisé, et si plus d’une bande de fréquen-
ces est couverte, choisir les antennes de la manière suivante:
A. Si les fréquences enjambent deux bandes contiguës,

choisir les antennes conformément à la bande de fré-
quences la plus basse.

B. Si les fréquences enjambent trois bandes, utiliser une an-

tenne WA380A et une antenne WA380C.

IMPORTANT : L’emploi de l’antenne incorrecte peut sé-
rieusement affecter la performance du système.

2