MTP41S

Wideband Bodypack Transmitter

MTP41S is an extremely small and light pocket transmitter especially designed for professional wireless microphone applications. Very easy and quick to use thanks to OLED display, dedicated buttons and a joggle selector. MTP41S benefit also of the latest Wisycom RF technology along with an enhanced robustness against noise.

Improved features:
– Integrated HW limiter

FEATURES

Up to 232 MHz bandwidth in 470/798 MHz range (others on request)
Miniature design with flexible pcb (no connectors) for extended reliability
Input dynamic extension with an integrated HW limiter (30 dB above peak)
Ultra-light metal alloy body (60g without battery)
User selectable multi-companding systems:
ENR (noise optimized)
ENC (voice optimized)
Battery: 1 AA Alkaline or rechargeable NiMH or Lithium
Autonomy:
> 5h @ 50mW output power
> 7h @ 10mW output power
Infrared interface for management and firmware update
Easy and quick to setup thru an Oled display gain/freq button and a joggle selector
Extended regulation on Mic input gain: 80dB in 1dB step
Max input level 26dBu (15.5 V clipping) to connect directly to mixers and instruments

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Frequency ranges	B5 option: 470 ÷ 654 MHz B3 option: 510 ÷ 698 MHz B2 option: 566 ÷ 798 MHz
Switchable channels	2400 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 Power	switchable typ. 10 mW / 50 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 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 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.)
SND/D ratio (Analogue)	typ. 115 dB (A)rms with 40kHz deviation typ. 121 dB (A)rms with 56kHz deviation
Audio input connector	LEMO or DPA LEMO connector configurable on ‘mic’ display menu in 3 options: ▪ ’2 wires’: gain selectable -60 ÷ +40 (-54 dBu ÷ +26 dBu peak), no bias voltage ▪ ‘2 wires + bias’: gain selectable -60 ÷ +40 (-54 dBu ÷ + 6 dBu peak), 5.5 V on 4k7 bias supply ▪ ‘3 wires: gain selectable -60 ÷ +40 (-54 dBu ÷ +26 dBu peak) DPA connector (2 pin microdot audio connector) configurable only ▪ '2 wires' ▪ '2 wires+bias'
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
Managing interface	IrDA
LED	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)
PTT function	Pin 3 of the AF connector can be setup to an external push button
Display	High contrast OLED (Organic light-emitting diode) white display (128 x 32 pixels)
Power supply	1 AA size cell (Alkaline, rechargeable NiMH or Lithium)
Battery life	▪ approx. 11 hours @ 50mW continuous working Lithium ▪ approx. 8 hours @ 50mW continuous working with NiMH ▪ approx. 4.5 hours @ 50mW continuous working with Alkaline
Temperature range	-10 ÷ +55 °C
Dimensions	58.2 x 64.5 x 21.7 mm (HxWxD) with clip
Weight	Approx. 80 g. without battery (120g with batt.)