WIRELESS SYSTEMS / APPLICATION 1
APPLICATION 2 / WIRELESS SYSTEMS
Dual-channel wireless system
Single-channel wireless system covering two zones
When more than one wireless microphone system is required, you may find that in certain circumstances using two receivers side-by-side with individual antennas is unsuitable. For example, where the receiver needs to be placed out of sight or in a different room, such as installation for a multi-purpose venue, house of worship or a small live music performance. The solution is to utilise one pair of antennas placed in the room to feed both the receivers. The signal is passed from the room over two 50 Ohm RF cables to the receivers’ location, where the antenna signals are split into each receiver using the ATW-SC410 Active Antenna Splitter Kit. Check the signal loss of the antenna cable, based on the frequency range of your system and the specified antenna cable length and type. Audio-Technica’s wireless manager software offers a “cable loss calculation tool” to do so. If the dB loss exceeds 7 dB, you should consider including the ATW-B80WB In-Line RF Booster as each 6dB of loss across the signal chain will reduce your systems operating distance by 50%. The ATW-SC410 is powered by the receivers across the antenna cable – no external power source is required. Though our example includes the ATW-A49 LPDA Antenna, any passive antennas can be used provided they support the frequency range of your wireless systems. If you require an active antenna like our ATW-A410P, or other active components such as the ATW-B80WB, then check the total current consumption of the individual products (simply add their stated mA together per RF cable run) to make certain that your receiver delivers the necessary power. Compatible Audio-Technica wireless systems for this solution include the AT-One, 2000 Series and 3000 Series.
In some situations, only one wireless system is required, but there is the need to guarantee coverage over two separate areas. This, in most cases, is simply not achievable using one pair of antennas. An example of this would be when needing to cover an indoor area and its associated outdoor space, such as you may find in a restaurant, bar, or house of worship setting. Alternatively, a client may have a hotel ballroom which also divides into two multi-function areas, resulting in the need to cover the sections individually. To achieve this solution, you will need two pairs of antennas – one pair per area requiring coverage. Then, the four antenna cables run to the receiver location, and they are combined using the ATW-SC410 Antenna Combiner Kit. The resulting two antenna cables can then connect directly to the wireless receiver. Take care to position the ATW-SC410 as close to the antennas as possible, to minimise the quantity of antenna cable required in the installation – this will improve signal integrity and reduce cost for the customer. Refer to the notes in Application 1 for advice on specifying cable length, active antennas and boosters in the cable run. If the receiver in use can provide adequate current, it is possible to combine Application 1 and Application 2 to create a dual-channel wireless solution with the ability to cover two zones. Compatible Audio-Technica wireless systems for this solution include the AT-One, 2000 Series, 3000 Series and 5000 Series.
Zone 2
Zone 1
ATW-A49 ATW-A49a
ATW-A49 ATW-A49a
ATW-49SP ATW-SC140
ATW-49CB ATW-SC410
AUDIO OUT
ANT B
ANT A
DC 12V 500mA
SQ
LINE MIC
BALANCED
UNBALANCED
ATW-R2100b ATW-R2100b
ATW-R1
Product table Quantity Code
Product table Quantity Code
Description
Alternative
Description
Alternative
ATW-R2100b
ATW-R1
2
Frequency-agile True Diversity UHF Wireless Receiver
1
Diversity UHF Wireless Receiver
ATW-T210a
ATW-T1
2
2000a Series UniPak™ Transmitter
ATW-T220a Handheld Transmitter
1
AT-One Beltpack Transmitter
ATW-T3 Handheld Transmitter
ATW-A49a
ATW-A49a
1
Pair of UHF Wide-band Directional LPDA Antennas
2
Pair of UHF Wide-band Directional LPDA Antennas
ATW-SC410
1
Active Antenna Combiner Kit
ATW-SC410
1
Passive Antenna Splitter Kit
AC90
4
90cm RG58 Antenna Cable (Pair)
AC300, AC600, AC1000,AC2000, AC4000
AC90
2
90cm RG58 Antenna Cable (Pair)
AC300, AC600, AC1000,AC2000, AC4000
audio-technica wireless systems guide - 39
38 - audio-technica wireless systems guide
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