Harmonai ACT-804 UHF Wireless Gooseneck Conference Microphone image 1

Harmonai ACT-804 Professional UHF Wireless Gooseneck Conference Microphone — 200 Channels, 15 Systems Simultaneous, Digital Pilot Tone

The Harmonai ACT-804 is a professional UHF wireless gooseneck conference microphone operating in the 615–695 MHz band with digital pilot tone technology. It offers 200 selectable c...

$172.06

Model: ACT-804鹅颈会议话筒
Category: Microphones
Images: 4 images
Status: ready

Product Brief

Harmonai ACT-804 Professional UHF Wireless Gooseneck Conference Microphone — 200 Channels, 15 Systems Simultaneous, Digital Pilot Tone

Overview

The Harmonai ACT-804 is a professional UHF wireless gooseneck conference microphone operating in the 615–695 MHz band with digital pilot tone technology. It offers 200 selectable c...

Price: $172.06
Model: ACT-804鹅颈会议话筒
Category: Microphones

Specifications

Parameter	Value
Operating Frequency Band	UHF 615–695 MHz
Maximum Number of Channels	200
System Compatibility	Up to 15 systems operating simultaneously
Operating Distance	150 m (unobstructed)
Modulation System	FM
Pilot Tone Method	Digital pilot tone
Frequency Response (Transmitter)	100 Hz – 15 kHz (±3 dB)
Frequency Response (Microphone)	100 Hz – 18 kHz
Dynamic Range	>110 dB
Total Harmonic Distortion THD (Transmitter)	<0.5%
Total Harmonic Distortion THD (Receiver)	<0.01%
Signal-to-Noise Ratio	S/N >100 dB (A-weighted)
Receiver Sensitivity	−105 dBm
RF Sensitivity	−98 dBm (30 dB S/N)
Image Rejection	>75 dB
Adjacent-Channel Interference Rejection	>60 dB
Spurious Emission Suppression	>50 dB
Transmitter Operating Voltage	DC 12 V
Transmitter Operating Current	1000 mA
Transmitter Power Consumption	12 W
Transmitter Display	LCD × 4
Transmitter Output Interfaces	4 × XLR / 1 × 1/4-inch connector
Audio Output Level (XLR)	+10 dBV
Audio Output Level (1/4-inch)	+8 dBV

Service Support

We support project consultation, model recommendation, bulk purchasing and catalog delivery for retail, multipurpose halls, conference rooms and live events.

Business hours: Monday to Friday 09:00 - 18:30
Inquiry channels: phone / email / website form
Tip: share budget, quantity and use scenario in advance

ACT-804 Gooseneck Conference Microphone product image

Product Overview

The ACT-804 Gooseneck Conference Microphone is a professional-grade UHF wireless conference microphone system from Harmonai. It operates on the UHF 615–695 MHz RF carrier band and features built-in digital pilot tone technology and PLL frequency synthesis, delivering 200 selectable channels and supporting up to 15 systems operating simultaneously. The 40 cm gooseneck pickup arm pairs with a supercardioid condenser capsule, achieving an effective pickup distance of up to 50 cm for accurate speaker voice capture. With a 150 m unobstructed operating range, it meets the demands of small, medium, and large meeting venues. The main unit includes four XLR outputs and one 1/4-inch output, plus an LCD quad-display showing real-time status for all channels — providing a stable, reliable wireless conferencing solution for conference rooms, training rooms, and multi-purpose halls.

Operating Frequency Band

UHF 615–695 MHz

Maximum Number of Channels

200

System Compatibility

Up to 15 systems operating simultaneously

Operating Distance

150 m (unobstructed)

Modulation System

Pilot Tone Method

Digital pilot tone

Frequency Response (Transmitter)

100 Hz – 15 kHz (±3 dB)

Frequency Response (Microphone)

100 Hz – 18 kHz

Dynamic Range

>110 dB

Total Harmonic Distortion THD (Transmitter)

<0.5%

Signal-to-Noise Ratio

>100 dB (A-weighted)

Receiver Sensitivity

−105 dBm

Transmitter Output Interfaces

4 × XLR / 1 × 1/4-inch connector

Microphone Type

Condenser / Electret

Microphone Polar Pattern

Supercardioid

Gooseneck Length

40 cm

Effective Pickup Distance

50 cm

Battery Life

>10 hours (based on 2400 mAh capacity)

Conference Unit Dimensions

18 × 12 × 9 cm (L × W × H)

Receiver Dimensions

44.4 × 483 × 185 mm (H × W × D)

Recommended Applications

Medium & Large Conference Rooms: Supports up to 15 systems simultaneously with 200 selectable channels — enabling parallel operation across multiple rooms without interference.
Training Rooms / Classrooms: The 40 cm gooseneck and supercardioid polar pattern ensure precise voice pickup, covering the speaker’s area within a 50 cm effective range.
Multi-Purpose Halls / Auditoriums: 150 m unobstructed transmission range covers every corner of large venues; four XLR outputs meet multi-channel sound reinforcement requirements.
Government Agencies & Enterprises: Digital pilot tone + PLL frequency synthesis ensures signal stability; LCD quad-display enables real-time monitoring of all channel statuses — delivering professional, dependable conferencing performance.

Learn more about the Harmonai ACT-804 wireless conferencing system — contact us today for a tailored professional solution.