Technical Specifications - WisyCom MTH400 User Manual

MTH400 User Manual
2400 allocated by 40 groups of 60 channels (in specific frequency range), quickly
Switchable
selectable with dedicated buttons
channels
Up to 232 MHz, depending on band (see below code table)
Switching window
Quartz PLL frequency synthesizer circuit (25 kHz step)
Frequencies
▪ ± 2,5 ppm (in the rated temperature range)
Frequency stability
-10 ÷ +55 °C
Temperature range
▪ 10mW (ERP) (to respect some local norm)
▪ 50 mW (ERP) (note: in some countries middle power can be disabled, for local norm!)
Max RF power
▪ 100 mW (ERP) (note: in some countries high power can be disabled, for local norm!)
< 2 nW
Spurious emissions
wideband FM with pre-emphasis
Modulation
±40 kHz (Peak deviation = ±56 kHz)
Nominal deviation
MTH400 transmits also a digitally modulated sub-carrier, suitable for:
Telemetry feature
Directly interchangeable microphone-heads
AF input connection
-60 ÷ +0 dBu nominal, quickly settable by steps of 1 dB with dedicated buttons
AF input level
+6 dBu
Max. input level
150 dB SPL (0,5% THD), with MCM301/MCM302/MCM303/MCM304/MCM305
Max sound
condenser-heads
pressure
ENR (Wisycom Extended-NR), with independent Attack- and Recovery-time, noise
optimized
Noise-Reduction
ENC (Wisycom Extended-NC), with independent Attack- and Recovery-time, voice
optimized & with reduced pre-emphasis
45 Hz ÷ 21 KHz (3dB)
AF bandwidth
55 Hz ÷ 20 KHz (1dB)
< 0.3 % (0.15 % typ.)
Distortion
typ. 115 dB (A)
Signal-to-noise ratio
typ. 121 dB (A)
Led indication with bicolor led (red & green) on wireless power switch:
Led
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
Display
bar" quickly blinking (12% remaining)
2 AA size cell (Alkaline, rechargeable NiMH)
Power supply
▪ approx. 14 hours @ 10mW continuous working
MTH400 Battery life
▪ approx. 10 hours @ 50mW continuous working
(2AA alkaline)
▪ approx. 7 hours @ 100mW continuous working
 body max. diameter 33 mm (without microphone-head)
Dimensions
 total length 183 mm (without microphone-head)
Approx. 300g, including battery and MCM3xx (condenser) mic-head ( approx. 260g
Weight
batteries excluded)
16
Rev.05

TECHNICAL SPECIFICATIONS

▪ tone-squelch ▪ remote battery
operating monitoring
with 40kHz deviation
rms
with 56kHz deviation
rms
▪ Wireless transmission status: GREEN on/off
▪ Modulation peek (if activated): RED
▪ Battery lifetime status: GREEN
- steady (> 25%) - slowly blinking (< 25%) - quickly blinking (<12%)
▪ Ptt status: RED if active
▪ optional PTT (push
to talk) operation