Alto Pro Audio Radius 200H Headset Radio Mic System

Here's what Alto Pro say about the Audio Radius 200H Headset Radio Mic System:

Radius 200 is an easy-to-use UHF True Diversity wireless microphone system that provides reliable, crystal-clear sound for the most demanding professional vocal applications. Alto’s True Diversity receiver design is absolutely state-of-the-art. Radius 200’s True Diversity system improves upon the Radius 100, because it utilizes two separate receiver sections as well as two antenna systems. The unit constantly polls both receivers and the signals at the antennae, to instantly and seamlessly select the stronger signal. This is what “bulletproof” wireless microphone performance sounds like.

Features

• All-in-one, easy-to-use wireless microphone system for the most demanding professional vocal applications
• Dual-antenna/dual-receiver True Diversity design for mission-critical, dropout-free operation
• 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 headset microphone
• 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 outputs

Specifications:

Receiver

• 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 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 – 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: 520 mA ±10 mA
• Case: Half 19” EIA-rack metal case
• Dimensions: 7.9” x 7.2” x 1.720.0 cm x 18.3 cm x 4.2 cm
• Weight: 2.1 lbs.1.0 kg

Transmitters

• UHF Band Operation: 520–937.5 MHz (region-specific)
• Channel Selection: Synchronization with receiver
• RF Power Output: 10 mW (maximum)
• Frequency Stability: ±0.005%
• Deviation: ±20 KHz with limiting compressor
• Spurious Emission: > 60 dB below carrier frequency
• Display: Hand-Held Microphone: 2-digit 7-segment LCDBelt-Pack Transmitter: 2-digit 7-segment LCD
• Power: Hand-Held Microphone: 2.4 VDC (1.2V via 2 AA batteries)Belt-Pack Transmitter: 3 VDC (1.5V via 2 AA batteries)Consumption: 120 mA 10 mA
• Dimensions: Hand-Held Microphone: 2.0” x 2.0” x 10.2” / 5.2 cm x 5.2 cm x 26.0 cm, Headset Microphone: 1.5” x 0.5” x 0.5” / 3.8 cm x 1.3 cm x 1.3 cm, avalier Microphone: 1.0” x 0.25” x 0.25” / 2.5 cm x 0.6 cm x 0.6 cm, Belt-Pack Transmitter: 2.6” x 3.8” x 0.9” / 6.5 cm x 9.7 cm x 2.4 cm
• Weights: 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