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Alto Radius 100L (Lavaliere)


Alto Radius 100L (Lavaliere)


Radius 100L - Professional UHF diversity wireless lavalier microphone system

All-in-one, easy-to-use wireless microphone system for professional vocal applications
Dual-antenna UHF diversity receiver for increased reliability and signal consistency
UHF band operation (520 - 937.5MHz) regionally selected
Receiver includes a high-visibility back-lit LCD display: Displays RF frequency and channel, AF and RF signal levels and other critical functions
High-quality lavalier/lapel microphone with included clip
Wireless belt-pack transmitter
Single-button scan feature for quickly identifying the optimal operating frequency
Sync function automatically synchronizes transmitter and receiver frequency
Squelch control for maximum clarity and dynamic range
Front-panel rotary volume control
Balanced XLR and unbalanced ¼-inch mic or line-level output

Radius 100L is an easy-to-use UHF diversity wireless microphone system that provides reliable, crystal-clear sound for a wide range of professional vocal applications. 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!

Ready for any application, Radius 100 comes in four distinct versions:
Radius 100—Switching Diversity receiver and handheld condenser vocal microphone transmitter
Radius 100L—Switching Diversity receiver, lavalier microphone and wireless belt-pack transmitter
Radius 100H—Switching Diversity receiver, headset microphone and wireless belt-pack transmitter
Radius 100M—Switching Diversity receiver, wireless belt-pack transmitter and 1/4-inch instrument adapter cable

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 dB?V 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

Hand-Held Microphone: 2.0” x 2.0” x 10.2” / 5.2 cm x 5.2 cm x 26.0 cmHeadset Microphone: 1.5” x 0.5” x 0.5” / 3.8 cm x 1.3 cm x 1.3 cmLavalier Microphone: 1.0” x 0.25” x 0.25” / 2.5 cm x 0.6 cm x 0.6 cmBelt-Pack Transmitter: 2.6” x 3.8” x 0.9” / 6.5 cm x 9.7 cm x 2.4 cm

Hand-Held Microphone: 0.5 lbs. / 0.2 kg Headset Microphone: 0.2 lbs. / 0.1 kg Lavalier Microphone: 0.1 lbs. / 0.05 kg Belt-Pack Transmitter: 0.2 lbs. / 0.1 kg

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