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Wearing Wireless

The suggestions below will help you maximize the performance of your wireless system, extend the life of your microphones and help you avoid some common problems.

  • Don't coil the microphone cable around the case of VHF body-pack transmitters. Don't coil or bundle the microphone cable. (Doing so could reduce operating range because the cable on some transmitters also functions as the antenna.)

  • On UHF body-pack transmitters, keep the microphone cable away from the antenna.

  • Don't bend the microphone cable sharply, especially at the microphone capsule or the connector. This can cause premature failure of the cable. For the same reason, try to avoid repeated flexing of the cable where it enters the connector or capsule.

  • For high-stress applications such as aerobics instruction, fasten the microphone cable to clothing so that the repeated flexing is distributed over smooth loops near the middle of the cable.

  • When using clip-on microphones, position them reasonably close to the mouth. This is especially important in noisy surroundings or where feedback could become a problem.

  • In high-noise situations, consider using a headworn microphone instead of a clip-on microphone. Alternately, a handheld transmitter can be used if the hands do not need to be free.

  • Always make certain that a new, fresh alkaline battery is installed just before every important performance or presentation. Always have additional fresh batteries available.

  • When wearing a body-pack transmitter under clothing, make certain that it can be reached quickly to mute the microphone and replace the battery.

  • If the wireless user is likely to perspire heavily, it is advisable to wrap body-pack transmitters in clear kitchen food wrap, with the microphone cable opening pointed downwards. This will keep the transmitter relatively dry, avoiding performance problems and possible damage. After use, always unwrap transmitters and mics to let them fully air-dry.

  • The power output of wireless microphone transmitters is very low, and they are completely safe to use. However, any source of RF energy may interfere with the normal functioning of implanted cardiac pacemakers or AICD devices. A body-pack transmitter should not be worn where it is immediately adjacent to such a medical device. Note also that any medical-device disruption will cease when the RF transmitting source is turned off.

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