In a performance or entertainment sound reinforcement project, there is a question that may puzzle you: should I use UHF (U segment) or VHF (V segment) wireless microphone? So what are the differences between the two and which type is more advantageous? Today, I'd like to sort it out for you to find out what is u and V.

Q1: what is VHF? What is UHF?

Definition of VHF:

VHF generally refers to very high frequency.

Very high frequency (VHF) refers to the radio wave whose frequency band is from 30MHz to 300MHz. It is often used in radio, television, radio, aviation and navigation.

Definition of UHF:

UHF generally refers to UHF.

Ultra high frequency (UHF) refers to the radio wave with the wavelength range of 1m ~ 1dm and the frequency of 300 ~ 3000MHz.

It is commonly used in the field of mobile communication and radio and television.

Q2: UHF is better than VHF, right?

The two frequency bands used in wireless microphones have their own advantages and disadvantages. VHF or UHF is the best choice for different scenarios.

Q3: what are the advantages of VHF and UHF?

Advantages of VHF:

1. VHF is cheaper than UHF.

2. A higher power range for VHF.

3. VHF signal has strong transmission, even through non-metallic materials. VHF has strong penetration to nonmetal objects and is not easy to be absorbed.

4. VHF battery life is long and power saving.

Advantages of UHF:

1. The adjustable frequency range of UHF is wider than that of VHF.

2. When multiple microphones are used at the same time, UHF can be frequency modulated and its anti-interference ability is better than that of VHF.

3. The power output of UHF system is higher than that of VHF, the frequency shift is wider, the dynamic range is better, and the signal-to-noise ratio is better than that of VHF.

4. UHF RF noise is very small.

5. UHF can allow higher transmit power (up to 50MW)

6. The UHF antenna is short and easy to hide.

Q4: how to choose VHF or UHF wireless microphone correctly?

When we choose wireless microphones, we should give full play to their strengths according to the occasion and their characteristics.

Generally speaking, VHF is suitable for classrooms, convention and exhibition centers, KTV, multi-function hall and teaching system where the venue is not large and the flow of people is not dense; UHF is suitable for large-scale performance activities, high-grade KTV rooms or occasions where multiple microphones are used at the same time.

Ruibo technology new product release!

UHF wireless microphone scheme

The latest research and development of Ruibo science and technology team - UHF band wireless microphone scheme has come out! Our wireless microphone solution uses ultra-high integration IC, which solves many technical problems of wireless microphone on the market.

Advantages of Ruibo wireless microphone solution

1. High frequency UHF chip, strong performance and stable signal

2. Powerful function of suppressing howling

3. Adjustable echo function to customize echo length

4. ALC, AGC FUNCTION

5. No internal noise, no switching noise

6. Support FM function. Support multiple microphones to use at the same time, good anti-interference ability.

7. Adjustable 15 segment equalizer (EQ)

8. High fidelity audio processing, high power RF PA

9. Audio detection function

Parameters of launching plate

[transmitter model] rb-k188t-v1.0

[size of transmitting plate] 153 * 21 * 1.0mm

[audio response range] ≥ 106db

[audio response] 20Hz ~ 18khz

[low distortion] < 0.3%

[maximum transmitting power] 18dbm

[working current] ＜ 60mA@14dBm

[band range] UHF: 470MHz ~ 960MHz

[interface] standard 2-wire MCU interface

[Others] meet Pb free and ROHS standards

[standby current] < 22 μ a

Receiving board parameters

[receiving board model] rb-k188r-v1.0

[receiving board size] 64 * 54 * 1.0mm

[sensitivity] ＜ -108dBm@12dB SINAD

[audio dynamic range] ≥ 106db

[frequency response] 20Hz ~ 18khz

[distortion] < 0.5%

[power supply range] (2.0V ~ 3.6V)

[band range] UHF: 470MHz ~ 960MHz

[interface] standard 2-wire MCU interface

[Others] meet Pb free and ROHS standards

[working current] < 60mA