With the improvement and widespread use of wireless microphones, how to better play their superior role in operation should pay attention to the following issues:

First, how to choose the battery of the wireless microphone transmitter

In order to ensure that the normal operation of the system does not present signal distortion and frequency interference, it is necessary to use sufficient batteries, and it is best to choose alkaline 9V batteries when there are conditions for purchase.

Second, how to avoid and prevent external interference with wireless microphones

In the purchase of non-frequency unlimited microphone should first understand the local TV station's transmission frequency, the purchase should stagger the TV station's transmission frequency from interference, the purchase of multiple wireless microphone systems should also pay attention to the frequency of the system can not be repeated to prevent mutual interference when the frequency stack.

Third, how to eliminate wireless microphone by external interference

When the non-variable frequency DIVERSITY wireless microphone system is subjected to external interference (refers to when the transmitter power is off, there is still RF radio frequency, AF audio or diversity diversity through either or both of the LED display signal on the receiver display, it is indicated that the receiver is in the external radio wave interference), Can be tuned SQUEICH to improve reception and reduce interference. The detailed method is to adjust the antenna position, the transmitter is still turned off, the receiver volume output gain is turned off, and finally adjust the SQUEICH quiet device clockwise until all interference signals disappear (at this time, the receiver has no signal except the power display), and then turn a little clockwise, and be sure to use a non-inductive screwdriver when debugging.

Fourth, how to correctly use the antenna to ensure signal stability

When using multiple sets of wireless microphone systems, if it is the same series of products, it is best to use antenna splitter if possible to minimize the interference between the antennas, if there is no antenna splitter, you should first adjust the antenna of the wireless microphone receiver to the best position, and then lay it out in parallel. Adhere to the appropriate interval between each wireless microphone receiver (the antennas on each receiver can not touch), so that each receiver has a better acceptance condition, in order to improve the directivity of the wireless receiver and prevent mutual interference between frequencies to obtain a better wireless signal. In addition, it is best to install extended antennas or active amplified antennas in large venues to improve the reception effect.

Five, how to correctly identify the wireless microphone in use

When more than two handheld wireless microphones of the same model are used at the same time in a performance, in order to avoid misoperation, each wireless microphone should be marked with a different color, and the logo should generally be affixed to the bottom position of the handheld wireless microphone, the center of the microphone is not easy to block when holding the microphone, and the channel corresponding to the microphone on the mixing table should also be affixed with the same color logo or mark. In this way, even if the actor takes the wireless microphone by mistake, the operator can correct it in time when the program manager introduces the actor or plays (plays) the song. In addition, it can also use color microphone dust cover as a sign, which can not only eliminate the "gasping" and "poof" sound, but also make the microphone sign, which is really killing two birds with one stone. Especially when duet or ensemble singing, it is more important to adjust the volume and timbre of each microphone in time according to the color code.

Six, how to make the wireless microphone play the best effect

In order for wireless microphones to perform best, the relationship between transmitter output level gain, receiver output gain and mixer input gain must be properly handled. Improper handling may result in sound suppression, no penetration or sound distortion, and even overreaction.

The correct operation method is to turn on the wireless microphone to withstand the receiver and the sound system power supply, and set the sound system level (0DB or +4DB), release the power to the maximum output, and set the main output volume of the mixer at 0DB, open the wireless microphone transmitter power supply, and then set the audio output gain of the wireless microphone transmitter at 70% ~ 75%. And set the channel potentiometer of the radio microphone input channel on the mixing table at 0DB; Finally, carefully adjust the input gain of the mixer, and if necessary, adjust the audio output gain of the transmitter slightly until the microphone effect is satisfactory.