Shure WA404 User Manual

Shure Brothers Incorporated
222 Hartrey Avenue
Evanston, IL 60202-3696 U.S.A.
Model WA404 User Guide
WA404 ANTENNAIPOWER DISTRIBUTION
SYSTEM FOR WIRELESS MICROPHONE
SYSTEMS
1
POWER CONNECTOR
ANTENNA
B
1
1 5 W O U T P U T I
RF OUTPUT B RF OUTPUT A
SETUP AND INSTALLATION
Selecting the Appropriate Antenna(s):
Three versions of the WA380 Half-Wave Antenna are
available for wireless frequency bands:
WA380A
-
169 to 185 MHz
WA380B
-
185 to 200 MHz
WA380C
-
200 to 230 MHz
When multiple WA404's are used, select antennas for
each WS404 independently. When more than one frequen-
cy band is covered, select antennas as follows:
If the frequencies span two adjacent bands, select
antennas for the lowest frequency band.
If the frequencies span all three bands, use one
WA380A Antenna and one WA380C antenna.
Mounting the WA404 in a 19-inch Equipment Rack
1. Remove the single screw from each side of the WA404.
The Shure Model ~ ~ 4 0 4 is an amplified Antenna Dis-
2. Position the supplied mounting brackets over the holes.
tribution System and dc Power Distribution System com-
3. Attach the brackets using the two screws removed in
bined in one compact unit. The AntennalPower Distribution
Step 1 and the two screws included with the brackets.
system is a two-input, two-channel, eight-output amplified
antenna splitter that allows you to use as many as four diver-
sity wireless microphone systems with only two antennas.
The WA404 amplifies the wireless transmitter signals to
compensate for insertion loss and feeds the signals to their
respective wireless microphone receivers.
In addition, four 15 Vdc outputs on the rear of the WA404
provide a combined current of 2 amps to power up to four
Shure diversity wireless microphone receivers, eliminating
the need for external power supplies. The built-in, high-effi-
ciency switching power supply will accept mains voltages
from 100 V to 240 V (with the appropriate ac power cord).
The WA404, for use with 100 to 120 V , is furnished with a de-
tachable, 3-conductor power cord with a 3-pin grounded
U.S. type ac connector. The WA404E, for use with 2201240
V, is supplied with a power cord that has a Schuko connector
at the mains end.
When planning a multiple microphone installation, keep
in mind that each microphone must transmit on a different
frequency and that frequencies must be selected in accor-
dance with system characteristics. Contact your Shure deal-
er for further information and assistance.
The WA404 is designed for use with Shure Model
WA380 Half-Wave Antennas and Model WA420 Extension
Coaxial Cables or other high-quality 50 coaxial cables.
The WA404 can also be used with the Quarter-Wave anten-
nas supplied with the wireless systems.
Mounting the WA404 on a Flat Surface
To use the WA404 on a flat surface (table, shelf, work
bench, etc.), attach the four supplied adhesive-backed rub-
ber bumbers to the bottom corners of the unit.
Connecting Antennas to the WA404
1. Connect each antenna to the WA404 using 6.1 m (20 ft)
WA420 Extension Cables.
2. If WA380 antennas are used, locate and mount the anten-
nas remotely as described in the instruction sheet. Use ei-
ther the mounting brackets supplied with the WA420 exten-
sion cables for wall mounting, or a Shure Model WA440
Rack Mount Ki for rack mounting the antennas, or Shure
Model A57 Swivel Adapters (or equivalent) if standard mi-
crophone stands are used to support the antennas.
3. Fully extend all telescoping sections of the WA380 an-
tennas for optimum reception. Make sure that the ex-
tended antennas are vertical.
Connecting Receivers to the WA404*
1. Connect the Antenna Inputs of the receivers to the RF
Outputs of the WA404 with the supplied rf cables.
2. Connect the receivers to the 15 Vdc outputs on the rear
panel of the WA404 using the Power Interconnect
cables furnished. Note that the interconnect cables are
furnished with locking plugs that mate with the WA404.
*Check power requirements before using with receivers made by other
manufacturers.
01996, Shure Brothers Inc.
27A8350 (PA)
Printed in U.S.A.