Shure UA830 User Manual
SHURE MODEL UA830
UHF IN-LINE RF AMPLIFIER
SHURE MODÈLE UA830
UHFAMPLIFICATEUR D'ANTENNE EN LIGNE RF
SHURE MODELL UA830
UHF IM ZEILE HF-ANTENNENVERSTÄRKER
MODELO UA830 DE SHURE
AMPLIFICADOR DE ANTENAS EN LINEA RF
MODELLO UA830 SHURE
UHF IN AMPLIFICATORE AD ANTENNA IN LINEA RF
©2008 Shure Incorporated
D8643 (Rev. 9)
27
Pri
nted in U.S.A.
GENERAL
45
antenna A in
12.7V out
150mA
receiver outputs
200Ω
lift
GND
line
mic
antenna B in
12.7V out
150mA
network
activity
networking
ethernet
RJ-45
45
The Shure UA830 is a low-noise, in-line antenna amplifier. The UA830
is intended for remote-mounting antennas to a Shure Model UR4 or ULX
receiver or Model UA845, or UA844 distribution amplifier in a large installation, effectively shortening the distance from the transmitters. The
it receives power through its output port from the Shure receiver or
un
distribution amplifier. When an antenna is remote-mounted, the UA830
amplifies the received radio signals to compensate for insertion loss in
the coaxial cable. A gain selector switch adjusts for longer lengths of coaxial cable.
FEATURES
• Compatible with the Shure Model UR4 or ULX wireless
microphone receiver and the Shure Model UA845, or UA844
Antenna Distribution System
• Mountable on supplied desk-/wall-mount or on a microphone
stand
• Two-position gain selector switch to adjust for longer coaxial cable
lengths (3 dB position for cables under 7 1/2 m [25 ft], 10 dB
position for cables over 7 1/2 m [25 ft])
• Isolates antennas from cable interactions
• Extremely durable under the heaviest use
• Shure quality, ruggedness, and reliability
APPLICATION
IMPORTANT: DO NOT USE INFORMATION
This device must not be used with antennas or other
devices that have a DC short circuit at
external (BNC) DC Block. A suitable BNC
their feed point without using an
DC Block is the JFW Industries Model
50DB-002.
Techniques will vary from setup to setup according to different situa-
tions. Usually, the antennas should be
as far apart as possible, creating
the widest RF field and ensuring signal reception. In a diversity system
such as the Shure Model UR4, as in the example in Figure 1, Shure recommends that the two antennas be positioned at 45° a
ngles pointing
away from each other (Figure 1). This way, the system is guaranteed the
widest possible RF field, minimizing the chance of the RF signal dropping out. As a general recommendation, po
sitioning should be tested
and adjusted for each individual setup.
IN A DIVERSITY SYSTEM
FIGURE 1
2
INSTALLATION
TO ANTENNA
3.
antenna A in
12.7V out
150mA
receiver outputs
200Ω
lift
GND
line
mic
antenna B in
12.7V out
150mA
network
activity
networking
ethernet
RJ-45
TO RECEIVER
ANTENNA IN
UR4 WIRELESS
RECEIVER
WALL MOUNTED
MIC-STAND MOUNTED
1. Thread the Shure Model UA830 unit on the supplied stand (Figure
2), or on a 5/8 in.-27 thread microphone stand.
2. Connect the antenna to the TO A
NTENNA port on the Model UA830
unit (Figure 2).
3. Using 50 W low-loss coaxial cable (purchased separately, Shure
25 or UA850 or UA8100 recommended), connect the TO
UA8
RECEIVER port of the UA830 to the Shure Model UR4 or ULX
wireless receiver or UA845, or UA844 Antenna Distribution System
(see Figure 3 for UR4 Receiver example).
4. If a second UA830 Line Amplifier is nee
ded for extremely long cable
runs (over 15 m [50 ft]), (Shure model UR4 and UA845 only) repeat
steps 1 to 3. See Adjusting for Different Cable Lengths.
2.
1.
ATTACHING THE BASE AND ANTENNA
FIGURE 2
CONNECTING THE RECEIVER
FIGURE 3
3
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