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MTH400

Wideband Handheld Transmitter
MTH400 WIDEBAND HANDHELD TRANSMITTER

MTH400 is a handheld transmitter especially designed for professional wireless microphone applications. It is very easy and quick to use thanks to OLED display and 1 joggle selector and 2 buttons for straight setup of gain and channel. MTH400 benefits also of the latest Wisycom RF technology, it has been especially designed for robustness against noise and self-interference thanks to a special intermodulation cancellation circuit.

FEATURES

  • Up to 232 MHz bandwidth in 470/798 MHz range (others on request)
  • Enhanced robustness against intermodulation and antenna performances thanks to special “intermodulation cancellation” circuit
  • Thin and ergonomics body design
  • Ultra-light and tough aluminum alloy body
  • Software switchable companding systems
    ENR (noise optimized)
    ENC (voice optimized)
  • Battery: 2 AA Alkaline or  NiMH or Lithium batteries with quick release system
  • Autonomy
    about 11h (50mW with Alk. batteries)
    more 14h (10mW with Alk. batteries)
  • Infrared interface
  • Easy and quick to setup thru an OLED display
  • 1 joggle selectors and 2 quick setup buttons (level/channel adjustment)
  • Available also with MCM type premium head (DPA/Schoeps/Milab/Audio-technica)
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Frequency rangesB5 option: 470 ÷ 654 MHz
B3 option: 510 ÷ 698 MHz
B2 option: 566 ÷ 798 MHz
Switchable channels2400 managed in 40 groups ofr 60 frequencies completely user customizable
Switching-window Up to 232 MHz, depending on band (see Variants below)
Frequencies Quartz PLL frequency synthesizer circuit (25 kHz step)
Frequency error± 2.5 ppm, in the rated temperature range
RF Powerswitchable typ. 10 mW / 50 mW /100 mW
note: in some countries high power can be disabled, for local norm!
Modulation wideband FM, with pre-emphasis
Nominal deviation±40 kHz
Peak deviation±56 kHz
Spurious emissions< 2 nW
Telemetry featureTX transmits also a digitally modulated sub-carrier, suitable for:
▪ tone-squelch operating
▪ remote battery monitoring
▪ optional PTT (push to talk) operation
Noise Reduction systemENR (Wisycom Extended-NR), with independent Attack- and Recovery-time, noise optimized
ENC (Wisycom Extended-NC), with independent Attack- and Recovery-time, voice optimized & with reduced pre-emphasys
AF bandwidth45 Hz ÷ 21 KHz (3dB)
55 Hz ÷ 20 KHz (1dB)
Distortion< 0.3 % (0.15 % typ.)
SND/D ratio (Analogue)typ. 115 dB (A)rms with 40kHz deviation
typ. 121 dB (A)rms with 56kHz deviation
Audio input connectordirectly interchangeable microphone-heads
Audio input level60 dBu adjustable range from -54 to +6 dBu at peak deviation (1 kHz), adjustable in 1 dB steps
Max input level +6 dBu
Max sound pressure150 dB SPL (0,5% THD), with MCM301/MCM302/MCM303/MCM304/MCM305 condenser-heads
Managing interfaceIrDA
LEDbicolor led (red & green) on wireless power switch:
▪ Wireless transmission status: GREEN on/off
▪ Battery lifetime status: GREEN steady (> 25%), slowly blinking (< 25%), quickly blinking (<12%)
▪ Modulation peek (if activated): RED
▪ Ptt status: RED if active
Battery lifetime indication8 steps : 7 bars (100%-87%-75%-63-50%-38%-25%) and “empty bar” quickly blinking (12% remaining)
PTT functionwith optional PTT accessory
DisplayHigh contrast OLED (Organic light-emitting diode) white display (128 x 32 pixels)
Power supply2 AA size cell (Alkaline, rechargeable NiMH or Lithium)
Power consumption230mA@ 2.6V average (display off, 100mW power)
Battery lifeapprox. 10 hours @ 50mW continuous working; up to 14 hours @ 10mW with Alkaline
Temperature range-10 ÷ +55 °C
Dimensions183 x 33 mm (length x diameter) without microphone-head
WeightApprox. 300g, including battery and MCM3xx (condenser) mic-head
Approx. 260g batteries excluded

Version:  v1.31.0P

Date:  2017-11-24

MTH400

changed – disabled the editing by menu of audio AF input between dB (AF Gain) and dBu (AF Max Level). It is not possible anymore change the AF input between dB and dBu using the menu of the display. It is possible to change it only using the manager.

Firmware

Configurator

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