MTP51-JP User Manual
10
TECHNICAL
SPECIFICATIONS
Switchable
channels
2400 allocated by 40 groups of 60 channels (in specific frequency range), quickly
selectable with dedicated buttons
Switching window
1240-1260 MHz
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
10 mW / L20 mW / L50 mW
Spurious emissions
< 2 nW
Modulation
Wideband/Narrowband FM with pre-emphasis
Nominal deviation
±40 kHz Wideband, ±25 kHz Narrowband
Peak deviation
±56 kHz Wideband, ±35 kHz Narrowband
Telemetry feature
MTP51-JP 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) Wideband with LPF at 20kHz
45 Hz ÷ 17 KHz (3dB), 55 Hz ÷ 15 KHz (1dB) Narrowband with LPF at 15kHz
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 & the
limiter is disabled):
RED
▪
Ptt status:
RED
if active
▪
Limiter into action: Blue
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 Eneloop Pro., Lithium)
Battery life
8 hours @ L50mW continuous working with Lithium
Dimensions
58.2 x 64.8 x 17.5 mm (Height-Width-Depth)
Weight
Approx. 72 g. without batteries (90g with batt.)
