ATW-49CB
ACTIVE ANTENNA COMBINER KIT
The Audio-Technica ATW-49CB Active Antenna Combiner Kit includes two
dual-input, one-output Active Antenna Combiners designed for use with
Audio-Technica 4000 and 5000 Series UHF wireless receivers and ATW-A49
LPDA antennas.* Each Active Antenna Combiner is a broadband device
(frequency range from 440 to 900 MHz) that combines two incoming RF
signals into one outgoing RF signal. One set of Active Antenna Combiners
enables two sets of antennas to feed one wireless receiver or distribution
system. To compensate for RF signal loss associated with combining signals,
the Active Antenna Combiner provides unity gain. (Note that without the
use of an antenna preamplifier, long antenna-cable length may deteriorate
signal.)
Each kit includes:
two Active Antenna Combiners and two 45mm BNC-to-
BNC RG 58 coaxial antenna cables.
NOTE:
The ATW-49CB Antenna Combiner re12V DC power from
any Audio-Technica 4000 or 5000 Series receiver or +5 to +14V DC from any
wireless receiver or antenna distribution system that offers antenna power.
A light on each Active Antenna Combiner indicates that power has been
correctly applied.
* The ATW-49CB Active Antenna Combiner Kit is also suitable for use with
other receivers that are in its specified band, use BNC antenna connectors,
and provide antenna terminal voltage; it may also be used with a variety of
other antennas from Audio-Technica and other manufacturers.
HOW TO INSTALL THE ATW-49CB ACTIVE ANTENNA COMBINERS
1. Connect one BNC-to-BNC RG 58 coaxial antenna cable (two supplied)
to the OUT connector on one Active Antenna Combiner (two supplied).
Connect the other end of this cable to the ANTENNA A input on either a
receiver or distribution amplifier, as shown in Figure 1.
2. Repeat step 1 for the ANTENNA B input, using the second Active Antenna
Combiner.
3. Use coaxial antenna cables (not included) to connect the IN connectors
on each Active Antenna Combiner to a UHF antenna, as shown in Figure 1.
4.
NOTE: ATW-A49 antennas do not require power. If you are using
ATW-A49 antennas, skip Step 4.
If you have an antenna system that
requires power (such as an antenna preamp or booster) you must open
the ATW-49CB Active Antenna Combiner assembly and activate a switch
on the circuit board. (This enables the combiner to pass power through to
the antenna.) Current consumption of the preamp or booster should not
exceed 100mA.
The unit is shipped with the switch in the “off” position. To flip the switch
to the “on” position, first
be certain the combiner is not attached to
any power source
. Next, use a Phillips screwdriver to remove the two
screws on the Active Antenna Combiner’s access panel; remove the
access panel; use a tweezers to flip the switch into the “on” position.
Finally, replace the access panel and securely tighten the two screws. (See
Figure 2.)
FORM No. ATGC-L0024-06-E
Machida • Tokyo • Japan
SPECIFICATIONS
DESCRIPTION
2-input Active Combiner
BANDWIDTH
440 MHz to 900 MHz
VSWR
< 1.7:1
(within specified bandwidth)
GAIN
0 dB typical
(within specified bandwidth)
IMPEDANCE
50 ohms, typical
(within specified bandwidth)
TERMINATION TYPE
3-BNC Female
WEIGHT
51 g
DIMENSIONS
61.0 mm W x
47.0 mm L x
23.0 mm H
DC INPUT
5-14V DC
CURRENT
30 mA @ 12V DC
FINISH ON ENCLOSURE
Chemical film per MIL C 5541
MATERIAL
6063T52 extruded aluminum (sides)
5052-H32 aluminum (top and bottom)
PASS-THROUGH CURRENT
100 mA (maximum to both inputs
combined)
Figure 1
OUT
Receiver or Distribution
Amplifier
IN
IN
IN
IN
OUT
ON
OFF
Figure 2
