WIRELESS SYSTEMS / APPLICATION 1
Dual-channel wireless system
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.
ATW-A49 ATW-A49a
ATW-49SP ATW-SC140
ATW-R2100b ATW-R2100b
Product table Quantity Code
Description
Alternative
ATW-R2100b
2
Frequency-agile True Diversity UHF Wireless Receiver
ATW-T210a
2
2000a Series UniPak™ Transmitter
ATW-T220a Handheld Transmitter
ATW-A49a
1
Pair of UHF Wide-band Directional LPDA Antennas
ATW-SC410
1
Passive Antenna Splitter Kit
AC90
2
90cm RG58 Antenna Cable (Pair)
AC300, AC600, AC1000,AC2000, AC4000
38 - audio-technica wireless systems guide
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