WisyCom MTP41 - Technical Specifications; Device Specifications Summary

MTP41 User Manual
18
TECHNICAL SPECIFICATIONS
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 (see Variants on the next page)
Frequencies
Quartz PLL frequency synthesizer circuit (25 kHz step)
Frequency stability
▪ ± 2,5 ppm (in the rated temperature range)
Temp.range
-10 ÷ +55 °C
Max RF power
▪ 10mW (ERP) (to respect some local norm)
▪ 50mW (ERP) (note: in some countries middle power can be disabled, for local norm!)
Spurious emissions
< 2 nW
Modulation
wideband FM with pre-emphasis
Nominal deviation
±40 kHz (Peak deviation = ±56 kHz)
Telemetry feature
MTP41 transmits also a digitally modulated sub-carrier, suitable for:
▪tone-squelch operating
▪ remote battery monitoring
▪ optional PTT (push to talk) operation
AF input connector
LEMO option
Configurable on ‘mic’ display menu in 3 options:
▪ ’2 wires’:
▪ ‘2 wires + bias’:
▪ ‘3 wires:
gain selectable -60 ÷ +40 dB (-54 dBu ÷ +46 dBu peak), no bias voltage
gain selectable -60 ÷ +40 dB (-54 dBu ÷ +46 dBu peak), 5.5 V on 4k7 bias supply
gain selectable -60 ÷ +40 dB (-54 dBu ÷ +46 dBu peak)
AF 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
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-emphasis
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 40 kHz deviation
▪ typ. 121 dB (A)
rms
with 56 kHz 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) bicolor 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)
PTT function
Pin 3 of the AF connector can be setup to an external push button
Power supply
1 AA size batteries (Alkaline, rechargeable NiMH, Lithium)
MTP41 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
Dimensions
58.2 x 64.5 x 21.7 mm (Height-Width-Depth)
Weight
Approx. 80 g. without batteries (120g with batt.)