Radioddity DB25-D - DB40-D General Specifications; DB40-D Receiver Specifications

Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0
© Radioddity 2023 page 227 of 252
18.4 General specifications of the DB40-D
Parameter
VHF
UHF
Frequency
136…174 MHz
400…480 MHz
Type
Dual band, Dual standby, Dual mode
Digital mode
TDMA 2-TimeSlot technology
(Tier 1 and Tier 2)
Zones
16
Channel Capacity
Up to 4000 (250 Channels per Zone)
PLL Channel Spacing
12.5 kHz / 25 kHz
Operating Temperature
-20° C … +60° C
Antenna Impedance
50 Ω
Rated Voltage
13.8 V DC
Dimension (H x W x D)
138 mm x 160 mm x 41 mm
18.5 Receiver of the DB40-D
Parameter
VHF
UHF
Frequency Range
136…174 MHz
400…480 MHz
Channel Spacing
12.5 kHz / 25 kHz
Frequency stability (-20 °C … +25
°C)
± 1.5 ppm
Analogue sensitivity
0.3 µV / 0.25 µV
Digital sensitivity (5 % BER)
0.25 µV / 0.2 µV
Intermodulation
65 dB
Adjacent Channel Selectivity
60 dB @ 12.5 kHz / 65 dB @ 25 kHz
Spurious rejection
65 dB
Rated audio
500 mW
Audio Distortion @ rated audio
3 %
FM hum & noise
-40 dB @ 12.5 kHz / -45 dB @ 25 kHz
Audio response
+1 dB, -3 dB
Conducted / radiated emission
-57 dBm