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How to prevent external signals from interfering with the wireless microphone?

Author:admin   AddTime:2021-11-09

How to prevent external signals from interfering with the wireless microphone?

Before buying a wireless microphone, you must first clarify the transmission frequency of the local TV station and stagger it when buying. If it is a newly-built site, please place high-density wire mesh or iron plate on the top of the building and surrounding it to block and block the interference of external wireless signals. Or, you can use the handle to suppress interference signals (but it will affect the microphone's receiving distance).

Signal stability

If you use multiple wireless microphone systems of the same series, if possible, it is best to use an antenna splitter to minimize the mutual interference between the original antennas. Or, by keeping the wireless microphones at appropriate horizontal intervals, the receiving conditions between them can be improved, and mutual interference between frequencies can be prevented, so as to obtain better wireless signals.

wireless microphone

When two or more portable wireless microphones of the same model are used in a performance at the same time, in order to prevent misoperation, the bottom of each wireless microphone (the place that is not easily blocked when holding the handset) must be marked with a different color. The channel corresponding to the microphone should also be pasted or marked with the same color mark as the microphone. In this way, even if the wireless microphone is wrong, the operator can correct it in time. In addition, you can also use the color microphone dust cover to improve the sound quality, and it can also be used as a microphone mark to do two things with one stone. In order to prevent accidental capture and editing of wireless microphones, you can set the number or color on each microphone first, and the exchange should be arranged by a special person, regularly, and the person in charge before the performance.



Silent phenomenon

In performances, the singers always take turns to use the portable. Some actors unknowingly turn off the wireless power or turn on the microphone mute switch to make the microphone in a mute state, so that when the next actor uses the wireless microphone, the wireless microphone does not emit sound. The embarrassing scene makes the operator feel flustered. Generally speaking, if the power of the wireless microphone is turned off, the activity indicator light of the wireless microphone will be turned off. When the operator frequently sees the wireless indicator light when the microphone is swapped, the problem will be immediately discovered. But after the mute switch of the wireless microphone is turned on, the operator uses the headset when changing the program. In order to prevent the phenomenon that there is no sound from the wireless microphone, it is usually necessary to fix the mute switch with tape.

Choose battery

In order to ensure the normal use of the wireless microphone system, a battery with sufficient energy must be used. It is best to choose an alkaline 9v battery. Confirm the power of the battery before purchasing and using it.

Most V-segment wireless microphones do not have a battery power display function. In order to prevent the audio signal from being distorted due to insufficient battery power, the operator uses the tuner PFL pre-listening function during the normal use of the wireless microphone, and uses the earphone to receive the signal of the wireless microphone. If the signal noise of the microphone channel increases slightly, it needs to be immediately Replacement battery. Replacement battery

The best way to change the battery during a performance is to turn on the "Mute" switch of the mixer channel to make the wireless microphone in a muted state. For example, if the mixer does not have this function, you can turn off the output level of the wireless microphone, turn off the power, replace the battery, turn on the power, and then restore the output level. Or, turn off the speaker input gain, or use the line/MIC selector to switch the input signal, replace the battery and turn it on, reset the speaker input gain or select key.

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