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Common problems and solutions in the use of wireless microphones

Author:admin   AddTime:2021-05-18

With the development of the times, wireless microphones are favored by more and more people. It is because the wireless microphone is convenient and lightweight to use, many people use it to sing, lecture, hold meetings, live broadcast...
However, its performance is often affected by various factors such as the frequency interference of the surrounding equipment, the user's wrong operation and other factors, and various failures occur. Let us take an in-depth interpretation of some common problems and solutions in the use of wireless microphones.

1. Can I use two microphones of the same frequency at the same time?
Cannot be used at the same time. Wireless transmission cannot be "mixed" in the air, and even at the same frequency, the receiver cannot mix two transmitted signals. For example, it is impossible for two FM radio stations to transmit signals on the same frequency. Because this will cause confusion and cause audio distortion. All in all, each wireless transmitter should have a separate receiver and its unique frequency.

2. What is the difference between the frequencies of the wireless microphones to avoid interference?
This depends on the situation, but less often requires 4MHz. This question cannot be answered clearly because it involves complex calculations. In general, cheaper wireless systems require a larger frequency gap, because their receivers are simple in design and few choices, which limits the number of compatible channels. The higher the price of the system, the better the filtering, the closer the distance between channels, the more compatible channels.

3. What is the reason why the microphone cannot be activated?
It should be checked whether the battery power is low or the filling is wrong.

4. UHF system is better than VHF system, right?
The two frequency bands used for wireless microphones have their own advantages and disadvantages. This is determined by the user of the frequency band, the physical characteristics of the frequency band, and the adjustment limits of the frequency band.
UHF (U section) system is superior to VHF (V section) system in several aspects:
The UHF band is not "crowded" in the VHF band;
UHF with flexible frequency has a wider application range;
UHF features can provide more compatible systems;
UHF system has higher power output than VHF, wider frequency shift, better dynamic range, and better signal-to-noise ratio than VHF.
VHF (V section) system is superior to UHF (U section) system in several aspects:
The price of VHF system is cheaper than that of UHF
VHF system has a larger transmitting range under a specified transmitting power;
VHF signals are highly propagating, even through non-metallic substances. VHF has a long wavelength and is not easily absorbed by the human body.

5. Can UHF system be compatible with VHF system?

Yes, even if the number of compatible VHF systems is large, it can also be compatible with UHF. (But you cannot connect the UHF receiver to the VHF antenna, VHF splitter, or VHF antenna distribution amplifier).



6. What should I do if the signal transmission distance is short and the communication is interrupted?
1) Check whether the antenna is installed correctly;
2) Check whether the weak battery indicator light is on.

7. The receiver and microphone are turned on, but there is no signal reception display. What is the reason?
1) The receiver and microphone have different frequency points.
At this time, you need to replace either one with the same correct frequency. If it is a PLL model and the frequency range of the two is the same, the frequency may be selected incorrectly. Just change the channel selection to the same correct frequency.
2) The microphone is malfunctioning.
If the above two frequency points are the same, either the microphone or the receiver may be malfunctioning. You can use another microphone of the same model and frequency point for testing. If the receiver can be activated, the original microphone is malfunctioning; Or test with another receiver of the same model and frequency. If it can be activated, it means that the original receiver is faulty.

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