Alto Professional Radius 200M Professional UHF Diversity Wireless Microphone System w/ 1/4" Instrument Adapter Cable

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Sale price$275.00 Regular price$319.00


Alto Professional Radius 200 Professional UHF Diversity Wireless Microphone System operates over the 520 to 937.5 MHz frequency spectrum. It features True Diversity design that utilizes two separate receiver sections as well as two antenna systems. The unit constantly polls both receivers and the signals at the antennas to instantly and seamlessly select the stronger signal. This assures you of a stable, reliable wireless signal, with virtually no chance of dropout or interruption.

A single-button can be pressed to scan for the optimal transmission frequency, and the connection between transmitter and receiver can be easily synchronized. Squelch control helps minimize background noise during silent periods, and a front-panel rotary volume control provides precise control over the output level. This wireless microphone system includes a 1/4" instrument adapter cable and wireless belt-pack transmitter.

  • All-in-one, easy-to-use wireless microphone system for professional vocal applications
  • Dual-antenna and dual-receiver True Diversity design for reliability and signal consistency
  • 520 to 937.5 MHz UHF band operation (regionally selected)
  • Receiver features a backlit LCD display that displays RF frequency and channel, AF and RF signal levels, and other critical functions
  • Single-button scan feature to quickly identify the optimal operating frequency
  • Sync function automatically synchronizes transmitter and receiver frequency
  • Squelch control to minimize background noise during silent periods
  • Front panel rotary volume control
  • Balanced XLR and unbalanced 1/4" mic or line-level outputs
Band Supported UHF: 520 to 937.5 MHz (region-specific)
Oscillator PLL synthesized
Frequency Stability ±0.005%
Modulation FM
Transmission Range 328' (100 m)
Signal-to-Noise Ratio > 100 dB (at 20 KHz deviation and 60 dBμV antenna input)
Image & Spurious Rejection 80 dB minimum
Receiving Sensitivity At 2 uV over 52 dB/A SNR
Selectivity > 50 dB
AF Response 80 Hz to 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 x Balanced XLR and 1 x Unbalanced 1/4" (6.35 mm)
Display High-visibility back-lit LCD with RF and AF meters
Power Supply 12 V, 1 A, center positive (adapter included)
Power Consumption 520 mA, ±10 mA
Case Half 19" EIA-rack metal case
Dimensions 7.9 x 7.2 x 1.7" (20.0 x 18.3 cm x 4.2 cm)
Weight 2.1 lb (1.0 kg)
Band Supported 520 to 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 2-digit 7-segment LCD
Power Consumption Belt-Pack Transmitter: 3 VDC (1.5 V via 2 AA batteries)
120 mA ±10 mA
Dimensions Belt-Pack Transmitter: 2.6 x 3.8 x 0.9" (6.5 x 9.7 x 2.4 cm)
Weight Belt-Pack Transmitter: 3.5 oz (100 g)

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