AKG AB4000EW - Antenna Booster AB4000 EW

AKG AB4000 EW – Wideband UHF Antenna Booster (470–952 MHz) with Adjustable Offset of 3.5–17.5 dB

The AKG AB4000 EW is a high-performance in-line amplifier for compensating for signal losses in long coaxial cable runs between remote antennas and wireless system receivers/distributors. Operating in the 470–952 MHz range , it offers adjustable gain from 3.5 to 17.5 dB via internal cable-length switches, allowing the RF level to be optimized without overloading the chain. It is designed to accommodate up to two boosters in cascade for extended installations and is housed in a weatherproof metal chassis with in-line power LEDs for quick verification.

The AB4000 EW is remotely fed over the antenna cable from compatible units (e.g. PS4000 W / ASU4000 or antenna-fed distributors/receivers), simplifying cable routing. It uses 50 Ω female BNC connectors in and out and is compatible with AKG active and passive antennas such as the RA4000 B/EW , RA4000 EW , SRA2 B/EW and SRA2 EW . In typical applications, it can compensate for cable losses up to ≈35 m with RG58 or ≈75 m with RG213 , maintaining adequate signal margins in stages, theatres and large venues.

Main features

• Wide UHF range: 470–952 MHz to cover multiple professional bands.
• Adjustable cable compensation: 3.5–17.5 dB via cable length switches.
• Cascade: possibility of using up to 2 boosters in series for very long runs.
• Remote coaxial power supply: from PS4000 W , ASU4000 or other equipment with antenna voltage.
• Professional connectivity: BNC 50 Ω (input/output) with online status LED .
• Sturdy construction: metal and water resistant for indoor/outdoor use.
• Antenna compatibility: RA4000 B/EW, RA4000 EW, SRA2 B/EW and SRA2 EW.
• Working thermal range: −10 to 50 °C.

Product benefits

• Increased RF range and stability by recovering cable losses without adding complexity.
• Clean installation by feeding the booster through the antenna cable itself, without local sources.
• Precise optimization with cable length adjustment to prevent receiver overload.
• Reliability on tours and installations thanks to the sealed metal chassis and visual LED indication.

Use cases

• FOH and stage sides with remote antennas and long runs to control.
• Theaters, auditoriums and temples with antennas at elevated or exterior points.
• Fixed installations with antenna distribution and several receivers in a technical rack.

Frequently Asked Questions

• How much gain does it offer? Between 3.5 and 17.5 dB , selectable via internal switches.
• How is it powered? Remotely via coaxial cable from a PS4000 W/ASU4000 or antenna-powered equipment.
• Can I use more than one? Yes, up to two AB4000 EWs are supported in cascade for exceptionally long stretches.
• What antennas is it compatible with? AKG active and passive antennas from the RA4000 and SRA2 families (B/EW and EW versions).

Description for projects

AKG AB4000 EW antenna booster (UHF 470–952 MHz). Gain/offset : 3.5–17.5 dB, selectable via cable length switches. Power supply : remote via antenna cable (e.g. PS4000 W / ASU4000). Connections : 1×BNC 50 Ω input + 1×BNC 50 Ω output; in-line LED . Housing : metal, water-resistant . Temperature : −10…50 °C. Approx. dimensions : 110 × 50 × 50 mm; weight ≈ 150 g. Cascade : up to 2 units. Compatible with AKG RA4000 B/EW, RA4000 EW, SRA2 B/EW and SRA2 EW antennas.