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Tiempo de liberación:
2023-01-05 16:22
FM wireless microphone: commonly known as FM, it refers to FM 88-108MHz international FM broadcasting frequency band. Early consumer wireless microphones were received by FM radio, with simple system and low cost. However, due to the use effect, they could not meet the requirements of professional quality, so they could only become toys for children or students in the 21st century.
B. VHF wireless microphone: it can be divided into two types: low frequency and high frequency band. The former uses VHF50MHz frequency band. Because the frequency is low, the antenna length is too long, and it is most vulnerable to interference from various electrical clutter, this type of product has been replaced by high frequency band in the 21st century and gradually disappeared from the market. The latter uses VHF200MHz frequency band. Because of its high frequency and short antenna, it can even be designed as a hidden antenna, which is convenient, safe and beautiful. The clutter interference from electrical appliances is greatly reduced. The circuit design is extremely mature, and the price of parts is low. Therefore, it has become a popular model in the market today.
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