Park Air Systems Limited B6525MDR User Manual
31-3MDR00HB
Page 16
Specification
Draft
MDR Operating Characteristics
Frequency range
Between 118 and 136.975 MHz
Number of channels
100
Channel spacing
25 kHz (all modes)
8.33 kHz (Am-Voice mode only)
8.33 kHz (Am-Voice mode only)
Modulation modes
ACARS
13K
0A2D
VDL Mode 2
14K
0G1D
AM-Voice (25 kHz)
6K
00A3E
AM-Voice (8.33 kHz) 5K
00A3E
Frequency stability
Better than 1 ppm within permissible environmental conditions
Dimensions and Weight
The dimensions and weight of the MDR are:
Width
483 mm (19 inches)
Depth
450 mm (17.8 inches)
Height
88.9 mm (3.5 inches).
Weight
12.5 kg (27.5 pounds)
Input Supply Requirement
ac input supply
Between 90 and 264 Vac, 47 to 63 Hz
ac power consumption
Tx, less than 400 VA (250 VA typical)
Rx, less than 70 VA
Rx, less than 70 VA
Environmental
Temperature range
0 to +40°C operating
-20 to +60°C non-operating
-20 to +60°C non-operating
Ventilation
The MDR is cooled by a temperature controlled fan. When the MDR is
switched on, the fan runs at full speed for a short period before coming
under temperature control
switched on, the fan runs at full speed for a short period before coming
under temperature control
Warm up time
Less than 30 seconds