MTH400

General Description


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 and additional circulator (optional) 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 rechargeable NiMH 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 4 quick setup buttons (level/channel adjustment)
  • Available also with MCM type premium head (DPA/Schoeps/Milab/Audio-technica)



Technical Data


Switchable channels

2400 allocated by 40 groups of 60 channels (in specific frequency range), quickly selectable with dedicated buttons


Switching window

Up to 232 MHz, depending on band

1   470 ÷ 640 MHz

2   566 ÷ 798 MHz

3   510 ÷ 698 MHz

T   794 ÷ 798 MHz (For Thailand Only)

other ranges based on Country restriction (see Variants)


Frequencies

Quartz PLL frequency synthesizer circuit (25 kHz step)


Frequency stability

± 2,5 ppm (in the rated temperature range)


Temperature range

-10 ÷ +55 °C


Max RF power

  • 50 mW (ERP) when high power selected (note: In some countries high power can be disabled, for local norm!)
  • 10 mW (ERP) when low power selected (to respect some local norm)


Spurious emissions

< 2 nW


Modulation

Wideband FM, with 50 µs pre-emphasis


Nominal deviation

±40 kHz (Peak deviation = ±56 kHz)


Telemetry feature

MTH400 transmits also a digitally modulated sub-carrier, suitable for:

  • Tone-squelch operating
  • Remote battery monitoring
  • Optional PTT (push to talk) operation


AF input connection

Directly interchangeable microphone-heads


AF input level

-60 ÷ +0 dBu nominal, quickly settable by steps of 2 dB with dedicated buttons


Max. input level

+6 dBu


Max sound pressure

150 dB SPL (0,5% THD), with MCM301/MCM302/MCM303/MCM304/MCM305 condenser-heads


Noise-Reduction

ENR (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 bandwidth

45 Hz ÷ 21 KHz (3dB)

55 Hz ÷ 20 KHz (1dB)


Distortion

< 0.3 % (0.15 % typ.)


Signal-to-noise ratio

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

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


Led

Led indication with bicolor 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


Display

High contrast OLED (Organic light-emitting diode) display (96 x 36 pixels)

8 step battery lifetime indication: 7 bars (100%-87%-75%-63-50%-38%-25%) and “empty bar” quickly blinking (12% remaining)


Power supply

2 AA size cell (Alkaline, rechargeable NiMH)


Battery life (alkaline)

Approx. 11 hours @ 50mW continuous working; up to 14 hours @ 10mW


Dimensions

  • Body max. diameter 33 mm (without microphone-head)
  • Total length 183 mm (without microphone-head)


Weight

Approx. 300g, including battery and MCM3xx (condenser) mic-head ( approx. 260g batteries excluded)



Variants


MTH400-EU-Bx-BL

Europe power profile (50mW),

band x (1=470-640MHz, 2=566-798MHz, 3=510-698MHz),

color matt black


MTH400-EU-Bx-PV

Europe power profile (50mW),

band x (1=470-640MHz, 2=566-798MHz, 3=510-698MHz),

colour titanium grey


MTH400-EUX-Bx-BL

Europe power profile 100mW,

band x (1=470-640MHz, 2=566-798MHz, 3=510-698MHz),

colour matt black


MTH400-EUX-Bx-PV

Europe power profile 100mW,

band x (1=470-640MHz, 2=566-798MHz, 3=510-698MHz),

colour titanium grey


MTH400-US-Bx-PV

USA & Canada power profile (max 50mW, USA freq. range 470-608 & 614-698MHz),

band x (1=470-640MHz, 3=510-698MHz),

colour titanium grey


MTH400-US-Bx-BL

USA & Canada power profile (max 50mW, USA freq. range 470-608 & 614-698MHz),

band x (1=470-640MHz, 3=510-698MHz),

colour matt black


MTH400-JP-Bx-BL

Japan power profile (max 10mW, Japan freq. range 470-714MHz),

band x (1=470-640MHz, 2=566-798MHz),

colour matt black


MTH400-JP-Bx-PV

Japan power profile (max 10mW, Japan freq. range 470-714MHz),

band x (1=470-640MHz, 2=566-798MHz),

colour titanium grey


MTH400-NZ-Bx-BL

New Zealand power profile (max 100mW, New Zealand freq. range),

band x (1=470-640MHz, 3=510-698MHz),

colour matt black


MTH400-NZ-Bx-PV

New Zealand power profile (max 100mW, New Zealand freq. range),

band x (1=470-640MHz, 3=510-698MHz),

colour titanium grey


MTH400-AU-B3-BL

Australia power profile (max 100mW, Australia freq. range 520-694MHz),

band 3=510-698MHz,

colour matt black


MTH400-AU-B3-PV

Australia power profile (max 100mW, Australia freq. range 520-694MHz),

band 3=510-698MHz,

colour titanium grey


MTH400-CN-Bx-BL

China power profile (max 50mW, 470-510 & 630-787MHz),

band x (1=470-640MHz, 2=566-798MHz),

colour matt black


MTH400-CN-Bx-PV

China power profile (max 50mW, 470-510 & 630-787MHz),

band x (1=470-640MHz, 2=566-798MHz),

colour titanium grey


MTH400-RU-Bx-BL

Russia power profile,

band x (1:470-638MHz @5mW, 2:650-758MHz @50mW),

colour matt black



Accessories


MCM301

Premium custom Schoeps condenser cardioid microphone head






MCM302

Premium custom Milab condenser cardioid microphone head






MCM303

Premium custom Schoeps condenser hyper-cardioid microphone head






MCM304

Premium custom Milab condenser omnidirectional microphone head






MCM306

Premium DPA capsule super-cardioid microphone head

- Extended dynamic

- Dumping construction for ultra-low handling noise




MCM307 (discontinued)

Premium DPA capsule CARDIOID microphone head

- Extended dynamic

- Dumping construction for ultra-low handling noise

- Cardiod polar pattern optimized for rejection on rear-incident sound



SRE300-x

Mechanical/Electronic adapter to use SHURE mic heads

type Beta 58/87/KSM9

Small profile 11 mm,

x = Color [B: black, P: ceramic grey].

Please, specify color in the Purchase Order

Variants:

SRE300-x: without attenuation (standard)

SRE300-x-8dB: with attenuation of 8dB

SRE300-x-18dB: with attenuation of 18dB



SRE301-x

Mechanical/Electronic adapter to use Sennheiser mic. heads

type KK, ME and MD

Small profile 11 mm,

x = Color [B: black, P: ceramic grey].

Please, specify color in the Purchase Order

Variants:

SRE301-x: without attenuation (standard)

SRE301-x-8dB: with attenuation of 8dB

SRE301-x-18dB: with attenuation of 18dB



PTT301

Push to talk accessory for MTH300/MTH400

Small profile 14mm





PTT305

Push to talk accessory for MTH300/MTH400

High profile to use with windshields.





SMC300

Stand Mount Clamp






UPKmini

Infrared programming kit

Extremely small and light (interface + software) USB interface





UPK300E

Infrared programming kit

(interface + software) USB interface





AC1673

leather pouch






CASE300

Wooden case

for MTH300/MTH400 handheld and MIC accessories







 

 

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