1

WA405/WA405E ANTENNA/POWER DISTRIBUTION SYSTEM

The Shure Model WA405 (and WA405E 230 Vac model)
combines an amplified antenna distribution system and dc
power distribution system into one compact unit. The
WA405 uses two antennas, splitting the wireless transmitter
signals to feed as many as four diversity wireless micro-
phone receivers. Signal amplification compensates for in-
sertion loss.
In addition, four 12 Vdc outputs on the WA405 provide
a combined current of up to 2 amps to power up to four Shure
diversity wireless microphone receivers, eliminating the
need for external power supplies. The built-in, high-efficien-
cy switching power supply accepts mains voltages from 100
V to 120 Vac (WA405) or 230 Vac (WA405E) with the ap-
propriate ac power cord. The WA405 is supplied with a de-
tachable, 3-conductor power cord with a 3-pin grounded
U.S. type ac connector. The WA405E is supplied with a pow-
er cord with 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 WA405 is designed for use with Shure Model
WA380 or WA490 Half-Wave Antennas and Model WA421
Extension Coaxial Cables or other high-quality 50 Ω coaxial
cables. The WA405 can also be used with the quarter-wave
antennas supplied with wireless systems. See
Selecting An-
tennas
in the System Installation section of this guide.

SYSTEM FEATURES

•
Expandability.
Allows up to four wireless receivers to
use the same two antennas.
•
Compatibility.
Compatible with all wireless microphone
receivers operating from 169 to 240 MHz.
•
Dc Power OUTPUT Ports.
Up to four receivers can be
powered from the WA405 dc power output ports.
•
Low Noise and Intermodulation Distortion.
Main-
tains clean signals with minimal distortion.
•
Insertion Loss Compensation.
Whenever a signal is
split to multiple output ports, there is a loss in signal
strength known as Insertion Loss. The WA405 amplifies
signals to compensate for this phenomenon, ensuring a
strong signal to the receivers.
•
Front-Mounted Antennas.
The WA405 comes with
hardware to front-mount the antennas, which increases
accessibility and keeps antennas free from entangle-
ment with cables on the back of the unit.

CONTROLS AND CONNECTORS

Front Panel (Figure 1)

Ê
Ë
ÌÌ
ÊPower Switch.
ËLED Power Indicator.
ÌBulkhead holes for front-mounting antennas (insert
provided hole plugs when not in use).

Back Panel (Figure 2)

Í
ÎÏÐ
Í
Î
ÍRf output ports, channels A and B, connectors for up to
four wireless receivers.
ΗAntenna input connectors, channels A and B.
Ï—Dc power output connectors for distributing power to
wireless receivers.
ЗAc power input