Professional Dual Handheld VHF Wireless Microphone System Cordless Karaoke Microphone Speaker with Battery for KTV Party

Features:

Using vhf 200-280 Mhz band to avert interferencing frequency.

Using multilevel high frequency and mid frequency narrowband filter, so as to dispel anypossible interferencing signals.

The wireless microphone use hidden antenna look good and are useful.

There is a volt indicating circuit in the the microphone it can tell you if it is necessary tochange the battery.

Specially designed circuit switch is on the phone. it is for clearing up waves of miscella-neous siona.

All use quartz crystal oscillating circuits so the frequency is very steady.

This kind professional wirele-ss microphone adopt a series of measures to improve its functions advance frequency.

Using multilevel high frequency and mid frequency narrowband filter, mulriple no-e detect and control.

Designing it special functions(tone key locked identity )to a-void interference from outside.

Effective, built-in spherical wind.

 

Specification:

Carrier frequency:VHF-280MHZ

Frequency stabilization:less than±30ppm

Dynamic range:more than 90db

Total harmonic distortion:less than 0. 5%

Frequency response:40hz-15khz ±3dB

Audio output level separate type:0--+400mv mix tune 0--200mv

Effective distance received (empty place): 40-50 meters at the farthest

 

Fixed receiver

Power supply:AC110-220v45-60hz

Consume power:4watt

Signal/noie power:more than 90db

Signal/nose ratio:more than 80db

Image spurious reiection:more than 80db

Receivering sensitvity:less than 10dbuv(sinad=30db)

De-emphasis:50us

 

Handing microphone

Transmitter power:30mw

Modulaton type:FM,F3F

Max deviation:??5KHz

Spurious emission:more than 40dB(with carrier)

Battery voltage:9v battery

Continuum using:6 hours(compare with gp 1604s 9v battery)

Noise contror:perfectness circuit for eliminating noises

 

Package included:

2 x Microphone

1 x Receiver

1 x Audio Cable

2 x Battery

1 x Instruction Manual