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Alto Professional Radius 100L Wireless Lavalier System

Dolphin id:120206 Product SKU:RADIUS 100L

Limited Stock

The new Radius 100L series from ALTO Professional is the perfect headset wireless system for stage performance or conference vocal applications. Easy to use the Radius 100L provides crystal clear sound via the lavaliere microphone that can be clipped to the performer.

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Alto’s switching diversity receiver design utilizes two separate antenna systems for uncompromised wireless performance. If one antenna experiences signal interruption, the receiver instantly switches to the second antenna. This assures you of an extremely stable, reliable wireless signal,with virtually no chance of dropout or interruption. This is the promise of wireless performance-delivered!

The ALTO Professional Radius 100L System includes - Switching Diversity receiver, lavalier microphone and wireless belt-pack transmitter.


  • UHF Band Operation: 520–937.5 MHz (region-specific)
  • Oscillator: PLL Synthesized
  • Frequency Stability: ±0.005%
  • Modulation: FM
  • Transmission Range: 328 feet / 100 meters
  • Signal-to-Noise Ratio: > 100 dB (at 20 KHz deviation and 60 dBV antenna input
  • Image & Spurious Rejection: 80 dB minimum
  • Receiving Sensitivity: At 3 uV over 52 dB/A SNR
  • Selectivity: > 50 dB
  • AF Response: 80 Hz – 18 KHz
  • THD: < 1% (at 1 KHz)
  • IF Frequency: 1st: 243.95 MHz / 2nd: 10.7 MHz
  • Dynamic Range: > 100 dB
  • Tone Signal: 32.768 KHz
  • Audio Output: 1 balanced XLR1 unbalanced 1/4” (6.35mm)
  • Display: High-visibility back-lit LCD with RF and AF meters
  • Power: Supply: 12 V, 1 A, center positive (adapter included)Consumption: 150 mA ±10 mA
  • Case: Half 19” EIA-rack plastic case
  • Dimensions: 7.9” x 4.8” x 1.7”20.0 cm x 12.2 cm x 4.2 cm
  • Weight: 2.1 lbs.1.0 kg


  • UHF Band Operation: 520–937.5 MHz (region-specific)
  • Channel Selection: Synchronization with receiver
  • RF Power Output: 10 mW (maximum)
  • Deviation: ±20 KHz with limiting compressor
  • Spurious Emission: > 60 dB below carrier frequency
  • Display: Hand-Held Microphone:Belt-Pack Transmitter:2-digit 7-segment LCD2-digit 7-segment LCD
  • Power: Hand-Held Microphone:Belt-Pack Transmitter:Consumption:2.4 VDC (1.2V via 2 AA batteries)3 VDC (1.5V via 2 AA batteries)120 mA ±10 mA

£ 139.00 Web price, inc VAT

Ex Vat:
£115.83, VAT at 20.00%
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