Wi Digital Systems Wi Pro AudioMatrix Owner's Manual page 21

ANTENNA SETUP
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Transmitter and Receiver antennas should be positioned clear of
any obstructions, including walls, metal surfaces, large free standing
objects or human bodies, which can absorb RF.
Antennas also must not touch or cross other receiving antennas and
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have at least a few inches of clearance. We recommend placing the
antennas higher than crowd level by 3 to 5 feet using the supplied
mounting accessories.
Transmitter and Receiver antennas are generally placed in the
vertical position. Additionally, antennas also can be placed at approxi-
mately a 45-degree angle from vertical to accommodate the dynamics
of live setups. Never orient the antennas horizontally!
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