Wireless Microphone Purchasing Tips

- Oct 10, 2018-

1. The transmission signal of wireless microphone transmitter is different.

The carrier frequency of the V-segment wireless microphone transmitter part transmitter is a fixed number of frequencies, and several frequency multiplier circuits are used to obtain high-frequency signals, and the user cannot adjust the frequency on-site.

Most of the U-segment wireless microphone transmitters use the phase-locked loop technology to obtain high-frequency signals. The frequency of the transmitter and receiver is mostly adjustable for the infrared frequency.

2. The frequency band in which the wireless microphone is located is different.

V-band has low frequency range (180MHZ--280MHZ)

U-band range is wider (500MHZ--900MH)

3. Different anti-interference ability.

When there is an interference signal, the V-segment wireless microphone is difficult to avoid, and the U-segment wireless microphone can easily avoid various interferences by adjusting the frequency of the transmission and the receiver. The U-segment wireless microphones used for professional performances are often made into true diversity, that is, one microphone is received by two antennas, and the probability of occurrence of breakpoints in the U-segment wireless microphone is extremely small.

4. Receiving the host's transmission signal.

The V-segment wireless microphone receiver is made to have a fixed frequency point. Only the manufacturer can change the frequency, and the user cannot adjust the scene.

 The U-band wireless microphone receiver receiving frequency is mostly adjustable, and the infrared frequency can be performed by the wireless microphone transmitter.

5. The signal transmission path is different.

VHF RF signal transmission has small reflection on small metal objects and can be diffracted; it can penetrate to non-metallic objects such as human body; the loss of feeder is low, the antenna can be extended appropriately; the battery is used for a long time; by VHF TV channel, paging The letter machine and industrial pollution such as electric welding, motor and so on have large interference; the usable frequency range is between 180-280MHZ, the expandable range is too narrow, the VHF microphone is used when the frequency is crowded, the compatible frequency is small; the dynamic range of the signal is small.

UHF RF signal transmission has many reflections on small metal objects, and multi-channel propagation can form interference; occlusion attenuation is large for non-metallic objects such as human body; feeder loss is large, receiver should be as close as possible to microphone; large transmission power is required, battery The use time is short; the high frequency interference is less; the expandable range is large, and it can be used by multiple microphones to form a larger system; the dynamic range of the signal is large. Because the U segment is high-frequency transmission and reception, the requirement for the electronic component is higher than that of the V segment. The technical content is also correspondingly high. In terms of application, the U segment is not a segment because most of the frequency waves in daily life. Therefore, the chance of being disturbed is greatly reduced. The segment of the U segment is broad. More frequency points can be divided to achieve multiple frequencies without interference in the same situation.

 

About MAONO

MAONO is an innovative designer and manufacturer of Lavalier, Podcasting, Wireless, Shotgun, Recording microphones and accessories for Smartphone, Camera and PC, etc. 

www.maonotech.com