Browse brands

Wisycom - MTB40S Wideband Plug-on Transmitter

Wisycom - MTB40S Wideband Plug-on Transmitter
Wisycom - MTB40S Wideband Plug-on Transmitter
Product Code: MTB40S
Qty:   - OR - Add to Wish List

MTB40S is an extremely small and light plug-on transmitter especially designed for professional wireless microphone applications. MTB40S benefit of the latest Wisycom RF technology along with an enhanced robustness against noise and inter-modulation. Improved features:

– New white OLED display

– New XLR locking system

– Integrated HW limiter


  • Up to 232 MHz bandwidth in 470/798 MHz range
  • Enhanced robustness against self-interferences and antenna performances thru a proprietary “intermodulation cancellation” circuit
  • Miniature design with flexible pcb (no connectors) for extended reliability
  • User selectable companding systems
    • ENR (noise optimized)
    • ENC (voice optimized)
  • Input dynamic extension with an integrated HW limiter (30 dB above peak)
  • P48 phantom power for condenser microphones
  • New white OLED display (128 x 32 pixels)
  • New XLR-3F connector with locking collar to ensuring an extremely tight noiseless fit!
  • Infrared interface for management and firmware update
  • Audio input circuitry with high linearity audio transformer
  • Battery: 2 AA Alkaline or rechargeable NiMH or Lithium

Frequency Ranges

B5 option: 470 ÷ 654 MHz

B3 option: 510 ÷ 698 MHz

B2 option: 566 ÷ 798 MHz

Switchable Channels

2400 managed in 40 groups of 60 frequencies completely user customizable

Switching Window

Up to 232 MHz, depending on band (see Variants below)


Quartz PLL frequency synthesizer circuit (25 kHz step)

Frequency Error

± 2.5 ppm, in the rated temperature range

RF Power

Switchable typ. 10 mW / 50 mW / 100 mW

note: in some countires high power can be disabled, for local norm.


Wideband FM, with pre-emphasis

Nominal Deviation

±40 kHz

Peak Deviation

±56 kHz

Spurious Emissions

< 2 nW

Telemetry Feature

TX transmits also a digitally modulated sub-carrier, suitable for:

  • tone-squelch operating
  • remote battery monitoring
  • optional PTT (push to talk) operation

Noise Reduction System

  • ENR (Wisycom Extended-NR), with independant Attack-and Recovery-time, noise optimized
  • ENC (Wisycom Extended-NC), with independant Attack-and Recovery-time, voice optimized & with reduced pre-emphasys

AF Bandwidth

45 Hz ÷ 21 kHz (3dB)

55 Hz ÷ 20 kHz (1dB)


< 0.3% (0.15 % typ.)

SND/D Ratio (Analogue)

typ. 115 dB (A)rms with 40 kHz deviation

typ. 121 dB (A)rms with 56 kHz deviation

Audio Input Connector

XLR-3F (transformer isolated) with locking collar and 48V phantom power

Audio Input Level

100 dB adjustable range from -54 dBu (775 uV) to 46 dBu (15.5 V) at peak deviation (1 kHz), adjustable in 1 dB steps

Max Input Level

+46 dBu (15.5 V) at clipping, +20 dBu (7.75 V) at nominal level


RGB led indication with (red, green, and blue) on wireless power switch:

  • Wireless transmission status: GREEN on/RED off
  • Battery lifetime status: GREEN steady (>25%), slowly blinking (<25%), quickly blinking (<12%)
  • Modulation peek (if activated & the limiter is disabled): RED
  • Ptt status: RED if active
  • Limiter into action: Blue

Battery Lifetime Indication

8 steps : 7 bars (100%-87%-75%-63-50%-38%-25%) and "empty bar" quickly blinking (12% remaining)


High contrast OLED (Organic light-emitting diode) white display (128 x 32 pixels)

Power Supply

2 AA size cell (Alkaline, rechargeable NiMH or Lithium)

Temperature Range

-10 ÷ +55˚C


124 x 40 x 34 mm (H x W x D) 


Approx. 210 g without batteries (250 g with batt.)

Copyright © 2021 Audio Department.

Web development byCCSINTERACTIVE .