AKG PT420
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Manufacturer Information
AKG
https://www.akg.com
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A Compact Transmitter at the Heart of an Accessible WMS420 RF System
The PT420 is a transmitter bodypack designed to integrate into multichannel RF systems of the WMS420 series. Its approach focuses on the essentials: stable transmission, high-level audio reproduction, and simple handling, all in a particularly lightweight format. This positioning makes it a relevant solution when deploying multiple RF links (voice, presentation, instruments) without complicating the setup or blowing the overall budget.
Who Is It For and What Are Its Uses?
Thanks to its small size and light weight, the PT420 naturally suits "belt pack" uses: speakers, presenters, actors, stage technicians, or musicians using a headset microphone, lavalier microphone, or compatible instrument cable. It is also well suited for event performances and installations requiring multiple simultaneous transmitters, where both good sound coherence and smooth operation are expected. Its announced battery life of 8 hours on a AA battery allows for a full day of rehearsals or a long performance with minimal interruptions.
Technical specifications
| Category | transmitter |
| Frequency band | Region C – 520 à 694 MHz |
Questions frequently asked
Is the PT420A compatible with a headset microphone or an instrument cable?
The balanced audio input on mini XLR allows connection of a headset microphone, lavalier microphone, or compatible instrument cable. The maximum input level is 2.5 V RMS.
What is the battery life of the AKG PT420A transmitter?
A 1.5 V LR6 alkaline AA battery provides a specified operating time of 8 hours.
On which frequencies does this belt-pack transmitter operate?
The operating range extends from 530.025 to 559.000 MHz, within Region C band given as 520 to 694 MHz. Transmission uses FM modulation with an RF power of 10 mW.
Is the PT420A suitable for stage use with movement?
The Diversity antenna mode helps ensure reliable reception when the transmitter is worn and in motion. Weighing 60 g without battery and measuring 60 x 74 x 30 mm, the housing remains discreet on a belt.
What audio quality is specified with the PT420A?
The system bandwidth covers 40 Hz to 20 kHz. A signal-to-noise ratio of 105 dB(A) and distortion of 0.8% at 1 kHz are specified.



