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Maximizing Range

Operating range is not a frequent problem with quality wireless microphone systems. All Audio-Technica wireless equipment has a built-in safety margin that ensures reliable operation in the great majority of situations. However, when the operating environment is particularly difficult or the application is especially challenging, the suggestions below can help you obtain the best possible range from your system.

  • For best range, a diversity wireless system should be used. Diversity systems almost always have much better range than similar non-diversity systems.

  • Make certain that there is an unobstructed line-of-site path between the receiver antennas and the transmitter. Metal objects between the transmitter and receiver, even screens or scaffolds, will usually greatly reduce range. Do not mount receivers behind other equipment, low to the ground, or in back rooms.

  • When range is highly important, consider using higher-performance equipment. More expensive systems usually have more sensitive receivers, enhancing range.

  • A high squelch setting can cause a reduction in operating range. If interference problems require a high squelch setting, eliminate the interference or change frequency to avoid the range loss.

  • Eliminate interference. Several types of interference will reduce range even if they do not cause serious audio problems.

  • Keep all transmitters at least 10 feet (3 m) away from the receivers and their antennas. The transmitters can overload the receiver and reduce its sensitivity, as well as possibly cause interference.

  • Use only high-quality alkaline batteries for transmitters. Other types of batteries might have too low a voltage or inadequate capacity for the transmitter to achieve full power output.

  • With VHF body-pack transmitters, do not wrap the microphone cable around the transmitter body or bundle it within 18 inches (45 cm) of the audio connector.

  • For UHF body-pack transmitters, keep the microphone cable well away from the transmitter antenna.

  • Do not allow receiver antennas to touch each other. For best results, keep antennas from different receivers as far apart as possible.

  • Mount receiver antennas as high as feasible, if possible at least 8 to 10 feet (2.5 to 3 m) above the floor or stage. Keep antennas away from metal objects, including cables, pipes, cabinets, scaffolds and the supports for acoustic ceiling tile. Make certain that there is an unobstructed line-of-site path between the receiver antennas and the transmitter.

  • Make certain that wireless equipment is well maintained. After a long period of use, wireless receivers can lose sensitivity and the power from transmitters can drop. If range is not what it once was and there is no other obvious cause, consider having the system serviced.

Additional information is available at Maximizing Range. Certain Types of Interference can also cut range considerably. See also Quick Tips - Avoiding Interference and Resolving Interference Problems to learn more about this potential problem.

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