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AKG RA 4000 B

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This item has either been discontinued by the manufacturer or is no longer available to purchase on our website.

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(800) 771-8330

External Omnidirectional Active Dipole Antenna with Amplifier (2 Required)


The RA 4000 B is an active omnidirectional antenna. Designed for the WMS 4000 wireless microphone system, it comes with a specially-tuned wideband UHF amplifier, perfectly matched to all WMS 4000 channels. The integrated ultra linear RF amplifier circuit can be remotely powered by the PS 4000 antenna splitter and offers approximately 17 dB of amplification to compensate for the cable attenuation of up to 132 ft. (40 m) of RG58 cable or 278 ft. (85 m) of RG213 cable. If necessary, the RA 4000 B can also be cascaded with the optional AB 4000 antenna amplifier to compensate for even more antenna cable length. The antenna provides a BNC connector for connecting a BNC antenna cable.


  • For indoor or outdoor use, specifically, for near- field antenna setups with no preferred direction

  • Integrated high-performance antenna booster for use with antenna cables up to 180 m (600 feet) long (RG 213, in conjunction with 2 x AB 4000)

  • Remote powering option

  • Rugged, water-resistant case, BNC output

  • Status LED


  • Carrier frequency range: 650 to 870 MHz

  • Gain: 17 dB

  • RF input: 1 BNC socket, 50 ohms

  • RF output: 1 BNC socket, 50 ohms

  • Operating voltage: 8 VDC from PS 4000 or ASU 4000 via connecting cable

  • Dimensions: 4.3 x 1.4 in. (110 x 35 mm)

  • Weight: 2.8 oz. (80 g)

  • Standard accessories:SA 43 adapter

  • Optional accessories:LMF1B flange mount w/screwsLGN19B gooseneck


Q & A

RA 4000 B
MFR Part Number
RA 4000 B
Product Category
Unit of Measure
Shipping Weight
0.25 lbs.
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