Stop buying microphones! A complete guide to selecting dry wheat and avoiding pits that experts understand.

With the rapid development of live broadcast, government-enterprise meeting, stage performance and outdoor short video industry, wireless microphone has become just needed equipment. Many buyers and individual creators only look at the price when purchasing, ignoring the core parameters such as frequency band, radio stability, noise reduction, true diversity, etc., and frequently have problems such as off-frequency, noise, howling and fuzzy radio reception, which wastes the budget in vain. Today, I will give you a complete guide to avoiding pits. After reading it, you will no longer step on mines.

First, there is a huge gap between ordinary wireless microphones and true diversity microphones.
Most of the low-priced 2.4G wireless microphones in the market are received by a single antenna, and the signal is easily disconnected when the distance is more than 10 meters. When multiple devices are used at the same time, they interfere with each other, which is only suitable for short-distance use of household K songs and indoor short videos.
The professional true diversity wireless microphone is equipped with dual receiving antennas, and the equipment will automatically switch the antennas with stronger signals. The stable transmission distance in the open environment can reach 80-120 meters, and the anti-interference ability is full. It is suitable for complex scenes such as large-scale stage, auditorium meeting, outdoor performance, multi-camera live broadcast, etc. It is also the mainstream choice for engineers, government and enterprises to purchase.
If it is a long-time, long-distance and multi-device synchronous use scene, UHF band true diversity wireless microphone is preferred.

Second, how to choose the frequency band? Avoid interfering with the hardest hit areas
2.4G band: The advantage is that the price is close to the people, and the license is free. The disadvantage is easy to conflict with routers and Bluetooth devices, and the environmental noise caused by many electronic devices in shopping malls and conference rooms is serious. Suitable for single indoor short video and home use.
UHF FM band: dozens of frequency points can be manually switched, and multiple sets of microphones can be turned on at the same time without interference, and the signal is stable. It is the standard configuration for professional commercial scenes and the first choice for corporate meetings, stage performances and campus speeches.

Second, how to choose the frequency band? Avoid interfering with the hardest hit areas
2.4G band: The advantage is that the price is close to the people, and the license is free. The disadvantage is easy to conflict with routers and Bluetooth devices, and the environmental noise caused by many electronic devices in shopping malls and conference rooms is serious. Suitable for single indoor short video and home use.
UHF FM band: dozens of frequency points can be manually switched, and multiple sets of microphones can be turned on at the same time without interference, and the signal is stable. It is the standard configuration for professional commercial scenes and the first choice for corporate meetings, stage performances and campus speeches.

Third, the problem of high-frequency pit stepping is avoided in advance
Noise and current noise: most of them are caused by poor grounding of the receiver power supply and frequency band conflict. When purchasing equipment with independent noise reduction chip and metal shielding body, environmental noise can be greatly reduced.
Cut off the sound as soon as you walk: the core is that there is no true diversity dual antenna. Don't trust the long-distance parameters advertised by the merchants. Test the radio effect of walking and blocking the environment on the spot before placing an order.
Easy to whistle: When performing and meeting rooms are used, the microphone is easy to whistle when it is close to the sound. Choose a wireless microphone with built-in anti-howling algorithm and match it with an audio receiver, which will make debugging more worry-free.
Virtual standard of battery life: some low-priced products are marked with battery life of 20 hours, but actually only 4-6 hours. For long-term commercial use, it is recommended to choose professional equipment with Type-C fast charging and sufficient lithium battery capacity.

Fourth, reference for accurate selection of different scenes
Creator of short video/live broadcast: a wireless microphone with two collars, small and portable, with noise reduction, universal mobile phone camera and clear outdoor radio reception.
Government and enterprise conference rooms and campus speeches: handheld/gooseneck UHF wireless microphone, which can be used with four channels and eight channels at the same time, is suitable for large-scale venues.
Bar, Shang Yan, large stage: dual-channel true diversity handheld microphone, long-distance transmission, anti-interference, supporting multiple sets of equipment in parallel.
Home K-song, small activity room: economical 2.4G wireless microphone, high cost performance, meet the daily entertainment needs.