Professional UHF True Diversity wireless lavalier microphone 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.

Ready for any application, Radius 200 comes in four distinct versions:

  • Radius 200 – True Diversity receiver and hand-held condenser vocal microphone transmitter
  • Radius 200L – True Diversity receiver, lavaliere microphone and wireless belt-pack transmitter
  • Radius 200H – True Diversity receiver, headset microphone and wireless belt-pack transmitter
  • Radius 200M – True Diversity receiver, wireless belt-pack transmitter and 1/4-inch instrument adapter cable

All information is preliminary and subject to change.


  • 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 lavalier/lapel 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