What wireless microphone systems is this antenna compatible with?

The RA4000B/EW works with any wireless system operating in the 470–952 MHz band. It connects via a standard BNC female output connector and requires 8V remote power delivered through the antenna cable, making it compatible with AKG, Shure, Sennheiser, Audio-Technica, and most other professional wireless systems in that frequency range.

How far can I run a cable from this antenna?

The built-in remote-powered amplifier supports cable runs up to 300 meters while maintaining signal integrity. The 50 Ohm RF output impedance ensures proper matching and prevents signal loss over these extended distances.

Can I use this antenna outdoors?

Yes. The antenna features waterproof plastic construction designed for both indoor and outdoor use, making it suitable for touring, outdoor festivals, and permanent venue installations.

How do I mount this antenna?

The antenna includes a universal stand adapter that accommodates standard 3/8" and 5/8" mounting screws, allowing quick installation on microphone stands, ceiling poles, rigging hardware, or other standard mounting points. The compact 220 mm length and 65 g weight make positioning flexible.

What does B-Stock mean?

B-Stock means the antenna is fully functional with no defects in performance. It may have minor cosmetic imperfections from handling or display, but operates identically to new units and carries the same RF specifications and gain characteristics.

Do I pay sales tax on this order?

Sales tax is collected only on orders shipped to California; orders shipped to any other US state are not charged sales tax at checkout when you buy direct from our website. At a typical 7% rate that is an estimated $22 less at checkout than the same listed price on a marketplace, which collects sales tax as the facilitator in most states. Buyers remain responsible for any use tax their state applies. Free US shipping and 30-day returns are included.

AKG RA4000B/EW Antenna

The AKG RA4000B/EW is a compact, actively amplified antenna designed for wireless microphone systems operating across a wide frequency spectrum. Its lightweight construction and universal mounting adapter make it straightforward to install in both fixed installations and temporary setups, while the built-in amplifier compensates for signal loss over extended cable runs.

Coverage & Signal Performance

This antenna delivers 360° omnidirectional coverage across the 470–952 MHz band, making it suitable for a broad range of wireless mic frequencies. The 18 dB total gain and 17 dBi antenna gain ensure reliable signal pickup even in challenging RF environments, and the remote-powered amplifier maintains signal integrity through cable runs up to 300 meters—critical for larger venues and stage setups where the receiver rack sits far from the performance area.

Build & Deployment

The 220 mm length and 65 g weight keep the antenna discreet and easy to position overhead or on a pole without adding bulk or weight to your rig. Its waterproof plastic construction withstands both indoor and outdoor use, while the included universal stand adapter accommodates standard 3/8" and 5/8" mounting screws, allowing fast rigging on poles, mic stands, or overhead hardware between load-in and soundcheck.

Key Features

Frequency range: 470–952 MHz
360° omnidirectional coverage pattern
Total gain: 18 dB
Antenna gain: 17 dBi
Built-in remote-powered amplifier
Supports cable runs up to 300 meters
RF output impedance: 50 Ohms
BNC female output connector
8V remote power via antenna cable
Waterproof construction for indoor/outdoor use
Universal stand adapter (3/8" and 5/8" compatible)
Compact form factor: 220 mm × 38 mm, 65 g

The RA4000B/EW combines robust RF performance with practical field deployment, delivering consistent antenna gain and long-distance cable capability for professional wireless systems running on stage or in the house.

Condition	New
Country of Manufacture	China

Best suited for	Live Performance, Touring, Gigging
Skill level	Intermediate / Advanced / Professional