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AKG WMS420 Presenter Set Band-A

AKG WMS420 Presenter Set Band-A

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The AKG WMS420 UHF Wireless Presenter System is designed for live sound reinforcement applications such as for public address, presentations, installations, and performances that require up to eight simultaneously operating systems over a 30 MHz bandwidth. This system consists of a PT420 Beltpack Wireless Microphone Transmitter, an SR420 UHF Stationary Wireless Receiver, two detachable RF antennas, an AC adapter for the receiver, a AA-size battery for the transmitter, and a C417 L clip-on microphone.

The UHF receiver features two detachable antennas that enable connection to a wide range of professional RF accessories such as antenna splitters and remote mounted directional antennas for use with multi-channel systems. The front panel of the receiver features an on/off button, a rotary volume control, a button for selecting one of the available eight carrier frequencies within the system's range, an LCD display that shows the selected receiving channel, an RF OK LED to indicate the presence of a signal, and a CLIP LED to indicate when the audio level is too high.

The back panel of the receiver features a squelch control knob that will automatically mute the audio output if the strength of the radio transmission frequency becomes too weak. The back panel also features a DC IN port with strain relief for connecting the AC adapter, a balanced XLR-3F output for connecting to a live mixer, and an unbalanced 1/4" output for connecting to an amplifier.

The beltpack wireless transmitter comes with a C417 L clip-on microphone, but will also work with any of AKG's line of MicroMics. The beltpack features a noiseless on/off/mute switch, a gain control knob, and an LED indicator light. The transmitter is powered by a single AA battery which provides between six and eight hours of operating time with a range of approximately 30 meters. The transmitter also includes charging contacts for use with rechargeable batteries and AKG's CU400 rechargeable base station (sold separately).

More Information

Key Features

  • PT420 Beltpack Wireless Transmitter
  • SR420 Stationary Receiver
  • Includes C417 L Clip-On Microphone
  • 8-Hour Battery Life on Single AA Battery
  • Detachable Antennas for RF Accessories
  • Balanced XLR and Unbalanced 1/4" Outputs
  • Adjustable Squelch Control
  • Audio Clip and RF Control LEDs
  • 30 MHz Bandwidth
  • 30-Meter Range

Technical Specification


AKG Presenter Set Specs
Carrier Frequency Band A: 530.025 to 559.00 MHz
Diversity Antenna switching
RF Output 10, 20, or 50 mW (depending on frequency band)
Maximum Channel Output Up to eight compatible channels within one frequency band
Frequency Selection Fixed frequencies
Modulation FM
Range 98' (30 m)
Further distances can be achieved using external antennas
Audio Bandwidth 40 to 20,000 Hz (±3 dB)
Rack Mountable 1/2 RU
Dimensions 5.91 x 1.77 x 7.87" (150 x 45.0 x 200 mm)
Weight 13.2 oz (373 g)
Type XLR-3F mini
Carrier Frequency Band A: 530.025 to 559.00 MHz
Maximum Level 12 dB
Impedance 1 ohm
Audio Bandwidth 40 to 20,000 Hz (±3 dB)
Signal to Noise Ratio 105 dB-A
THD 0.8% at 1 kHz
Transmitter Synchronization Manual
Battery Type AA battery (LR 6 AA alkaline battery or HR 6 ASA NIHM rechargeable battery)
Battery Life Six to eight hours on one AA battery
Dimensions 2.36 x 2.91 x 1.18" (60.0 x 74.0 x 30.0 mm)
Weight 2.12 oz (60 g)


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