Alto Radius 200M Wireless Instrument Microphone System

Alto Radius 200M Wireless Instrument Microphone System
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  • All-in-one, easy-to-use instrument wireless system for the most demanding professional applications
  • UHF band operation (520 - 937.5MHz) regionally selected
  • Wireless belt-pack transmitter and 1/4-inch instrument cable
  • Front-panel rotary volume control
  • Balanced XLR and unbalanced ¼-inch mic or line-level outputs
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Alto Wireless UHF Instrument Microphone

Radius 200M is an easy-to-use UHF True Diversity instrument wireless system that provides reliable, crystal-clear sound for the most demanding professional 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 performance sounds like.

  • All-in-one, easy-to-use instrument wireless system for the most demanding professional 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
  • Wireless belt-pack transmitter and 1/4-inch instrument cable
  • 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
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
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
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 cm avalier 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

UK Deliveries

We offer free delivery on all of our items (UK mainland only) please see details below.

Destination Delivery Times Cost
UK Mainland Economy 3-5 Working Days* Free of charge
UK Mainland Express Next Day* £4.99
UK Mainland Saturday and Sunday Saturday or Sunday £14.99
Northern Ireland, Scottish Highlands 2 Working Days* £11.99
Scottish Islands, Channel Islands, Isle of Man, Isles of Scilly 2 Working Days* £14.99

*Applies to instock items. Orders placed after 4pm will be dispatched the following working day, next day delivery does not include Saturday or Sundays. Some services are only available to UK mainland addresses.

Jersey and Guernsey are also VAT exempt, so 20% will automatically be knocked off when selecting your country in the basket or checkout.

Pre 10am, 12am and named day delivery options are available in the basket, simply enter your postcode for an accurate price.

European Deliveries

We ship to most european destinations, simply choose your country and the correct price will show up in the basket.

Delivery times range from 2-4 days, 4-9 for remote areas.

A quick glance at some of our rates...

Destination Delivery Times Cost
Republic of Ireland, Belgium, France, Germany, Italy & Netherlands 2-4 Working Days £14.99
Spain, Austria, Denmark, Hungary 3-5 Working Days £19.99

Rest of the World

We can ship anywhere in the world, if you are outside of the EU we will knock 20% VAT off the price, rates depend on weight so please get in touch for an accurate price,

Read more about our delivery here.


Our returns system is easy, you have the right to cancel an order up to 14 days, please check our full returns policy here.

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