Alto Radius 100 Wireless Lavalier Microphone

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  • 863MHz - 865MHz Wireless Operating Frequency
  • Lavalier Microphone, Belt-Pack and Transmitter
  • High-Visibility Backlit LCD Display
  • Sync Function for Transmitter and Receiver Frequency
  • Balanced XLR and Unbalanced 1/4'' Inputs

Alto Radius 100 Wireless Lavalier Microphone

The Alto Radius 100 provides reliable, crystal-clear sound for a wide range of professional vocal applications, assuring users of an extremely stable, reliable wireless signal, with virtually no chance of dropout or interruption. The Alto Radius 100 owes it's incredible performance to new diversity technology. Alto's diversity receiver design utilises two separate antenna systems for uncompromised wireless performance. The receiver constantly evaluates the incoming signals to each antenna, and instantly determines which one is the stronger, selecting that stronger signal for consistent, drop-out free performance. This pack includes a lavalier microphone, wireless belt-pack and transmitter with integrated LCD display.

Product Ref: 56473

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Full Description

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Alto is renowned for producing high quality live sound equipment which is industry standard gear at an affordable price. The Truesonic range of PA speakers have become very popular with frequently gigging and touring bands, along with the Alto's user friendly and practical mixing desks. Alto has branched out into designing wireless systems with the same ethos for quality as the other live sound gear it produces. The Radius 100 and 200 range provide a reliable and stable wireless signal which is ideal for a variety of applications such as live performance, conference speeches and active instruction at fitness classes. Handheld, lavalier and headset microphones are available within the 100 and 200 range to suit various needs within a live performance.


  • Dual-antenna UHF Diversity receiver for increased reliability and signal consistency
  • UHF band operation - 863MHz - 865MHz
  • Receiver includes a high-visibility back-lit LCD display: Displays RF frequency and channel, AF and RF signal levels and other critical functions
  • Single-button scan feature for quickly identifying the optimal operating frequency
  • Sync function automatically synchronises transmitter and receiver frequency
  • Squelch control for minimising background noise during silent periods
  • Front-panel rotary volume control
  • Balanced XLR and unbalanced 1/4'' line-level outputs


Radius 100 Receiver

  • UHF Band Operation: 863MHz - 865MHz
  • Oscillator: PLL Synthesised
  • Frequency Stability: ±0.005 Percent
  • Modulation: FM
  • Transmission Range: 328Ft / 100 Metres
  • S/N Ratio: >100dB
  • Image & Spurious Rejection: 80dB
  • Receiving Sensitivity: At 3uV over 52dB/A SNR
  • Selectivity: >50dB
  • AF Response: 80Hz - 18kHz
  • Dynamic Range: >100dB
  • Tone Signal: 32.768kHz
  • Audio Output: 1 x XLR (Balanced), 1 x 1/4'' TRS (Unbalanced)
  • Display: High Visibility Backlit LCD with RF and AF Meters
  • Power Supply: 12V Power Supply (Included)
  • Power Consumption: 520mA
  • Housing: Half 19 Inch EIA-Rack Metal Case
  • Dimensions:
    • Height: 4.2cm / 1.7''
    • Width: 20cm / 7.9''
    • Depth: 12.2cm / 4.8''
  • Weight: 1kg / 2.2lbs

Radius 100 Bodypack Transmitter

  • UHF Band Operation: 863MHz - 865MHz
  • Channel Selection: Synchronisation with Receiver
  • RF Power Output: 10mW (Max)
  • Oscillator: PLL Synthesised
  • Frequency Stability: ± 0.005 Percent
  • Deviation: ±20kHz with Limiting Compressor
  • Spurious Emission: >60dB Below Carrier Frequency
  • THD: <1 Percent @ 1kHz
  • Tone Signal: 32.768kHz
  • Display: 2-Digit, 7-Segment LCD
  • Power: 2.4VDC (1.2V Via 2 x AA Batteries)
  • Dimensions:
    • Height: 6.5cm / 2.6''
    • Width: 9.7cm / 3.8''
    • Length: 2.4cm / 0.9''
  • Weight: 0.1kg 0.2lbs
Your order may contain items that use a 240V UK plug
Any electrical items in your order may have been designed to work with a 240V circuit, using a United Kingdom G type plug connection. An adapter or transformer may be required for these items to work properly and safely in your country. Some items work with a range of voltages, or have a switchable voltage control built in. Please refer to the specific product details for further information.