Axnes Aviation AS
Document number
Revision
Date
AX-PSB-UMAN-0027
Issue E
2015-03-05
Page 1-6
1.6 Technical data
1.6.1 Operation
Radio:
Half duplex, dual frequency Rx/Tx
Frequency:
Tx:409±0.5 MHz Rx:419±0.5 MHz
VOX operation:
Axnes
’ patented NIVOX, ensures no loss and operation in
high noise environment
Number of wireless users:
Unlimited
Number of Radio channels:
Up to 16
Encryption:
None
Operating temperature:
-25°C to 55°C
Storage temperature:
-40°C to 85°C
Water resistance
IEC EN60529 Edition 2.1.2001:02 IPX7 Category 1 (1
metre)
Pressure to activate front PTT:
0.5 to 1.0 Kg (Withstands a temperature drop of at least
20°C).
1.6.2 Power supply
Supply voltage:
Battery operated at 4.8V (1460mAH NiMh)
Operating time:
10 hours standby
8 hours receive
1.3 hours transmit (400mW)
Charge time:
2-3 hours
Charger:
CHG1236 M/S
1.6.3 Headset interface
Microphone sensitivity:
MP20-02DB: 0.1
– 60mVrms (0.3 – 180mVpp)
MP20-00U: 0.1
– 5mVrms (0.25 – 15mVpp)
MP20-00U: S/N 020765, 020781 and after as MP20-
02DB.
Microphone input impedance:
136
Ω impedance balanced
Microphone bias:
4.1V through 2,7K series impedance (Mic+)
Power supply in connector:
MP20-02DB: 4.8V up to 40 mA
MP20-00U: Battery power through 1,5K
Ω series resistor
MP20-00U: S/N 020765, 020781 and after as MP20-
02DB.
Headset output (mV rms):
Vol:
0
3
6
9
Open:
170
610
1030
1780
9
Ω:
105
385
650
1150
150
Ω:
160
590
995
1720
600
Ω:
167
605
1020
1770
