Author:admin AddTime:2021-05-16
2. VHF part. The very high frequency band is commonly known as the V band, and the frequency is between 180-280MHz. Due to the high frequency and low interference, frequency conversion will not occur due to crystal frequency lock, and the receiving performance is relatively stable. V-band professional performance microphones generally have two circuits: the first circuit; the high-frequency part only uses a 2003 integrated IC. These include. Signal reception, radio frequency amplification, frequency mixing and frequency discrimination are completed in one step. The sensitivity is not high, and the audio part uses 31101 lines. By compressing and expanding audio, the sound quality is much better than FM. The reception performance is improved by one level. Advantages: stable reception. Short-distance interruptions are rarely seen. Disadvantages are: the high frequency part is unstable, the sound frequency is not wide enough, the effect is not ideal in professional occasions, the use occasion: general household, the performance is relatively stable, and the sound quality is acceptable. You can choose this kind of wireless microphone.
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Shenzhen Shuyin Technology Co., Ltd. is a high-tech enterprise integrating microphone, microphone, Bluetooth headset, electronic audio-visual products and peripheral accessories of electronic digital products into one.
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