MTP40 Lite User Manual
Rev.02
17
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 90 MHz, depending on band (see below code table)
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
▪
50 mW (ERP) when high power selected
▪
10 mW (ERP) when low power selected
Spurious
emissions
< 2 nW
Modulation
wideband FM, with 50 µs pre-emphasis
Nominal
deviation
±40 kHz (Peak deviation = ±56 kHz)
Telemetry
feature
MTP40
Lite
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 5 options:
▪
’2 wires’
:
▪
‘2 wires + bias’
:
▪
‘3 wires
:
▪
‘2 wires & phantom’
▪
‘2 wires + bias & phantom’:
gain selectable -40 ÷ +40 (-54 dBu ÷ +26 dBu peak), no bias voltage
gain selectable -20 ÷ +40 (-54 dBu ÷ + 6 dBu peak), 5.5 V on 4k7 bias supply
gain selectable -40 ÷ +40 (-54 dBu ÷ +26 dBu peak)
gain selectable -40 ÷ +40 (-54 dBu ÷ +26 dBu peak),
gain selectable -20 ÷ +40,(-54 dBu ÷ + 6 dBu peak), 5.5 V on 4k7 bias supply
AF input level
80 dB adjustable range from -60 dBu (775 uV) to 26 dBu (15.5 V) at peak deviation (1
kHz), adjustable in 1 dB steps
Max. input level
+26 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-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 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
2 AA size batteries (Alkaline, rechargeable NiMH)