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DRB-25

VHF and UHF Base Station/Repeater

specifications

Specifications

General
Analog operation Standard
P25 NB operation Standard
Inbuilt P25 IMBE vocoding Standard
Repeater operation Standard
Base station operation Standard
VoIP and console operation Standard
12V DC revert: Standard
Telephone interconnect, analog Standard
Telephone interconnect, P25 digital Standard
2/4W EM line interface, analog Optional (Multi-mode module)
Licensed software options

Link radio, LF-05001

P25 DES-OFB encryption, LF-05002

VoIP, LF-05003

12 kbit/s CVSD repeater, LF-05004

Programmable channels 512
Frequency generation Synthesized
Channel spacing 12.5 kHz; 15 kHz; 24 kHz; 30 kHz
Analog modulation FM
Digital modulation C4FM
Operating temperature range -30 – +60 C
Frequency stability 1 ppm (standard), 0.1 ppm (optional)
Operating modes Simplex/Semi-duplex/Duplex
Diagnostics Inbuilt Web server
Alarms

AC/DC power fail, high VSWR, low output power

Input voltage AC 110V or 240V
AC power connector IEC type
Input voltage DC 13.8V ± 10%
DC power connector Powerpole 45A
Antenna connectors Type N female (Transmit/Receive)
Antenna impedances: 50 R (Transmit/Receive)
Receiver

Tunable frequency

VHF

UHF

 

136 -174 MHz

380 - 420 MHz, 400 - 470 MHz, 450 - 520 MHz

Switching bandwidth Full sub-band

Min transmit/receive spacing

for full duplex operation

~700 kHz (VHF), ~2.0 MHz (UHF)
IF frequencies

21.4 MHz/450 kHz (VHF),

72 MHz/450 kHz (UHF)

Demodulation method Direct down conversion

Receive sensitivity

Analog (12 dB SINAD)

Digital (5% BER)

 

-118 dBm/0.25 uV (VHF, UHF)

-118 dBm/0.25 uV (VHF, UHF)

Adjacent channel rejection

25 kHz WB analog (80 dB)

12.5 kHz NB analog (60 dB)

12.5 kHz NB digital (45 dB)

 

83 dB (VHF), 80 dB (UHF)

70 dB (VHF, UHF)

70 dB (VHF), 65 dB (UHF)

Spurious

and image response rejection

WB analog (85 dB)

NB analog (75 dB)

NB digital (90 dB)

 

 

90 dB (VHF, UHF)

90 dB (VHF, UHF)

90 dB (VHF, UHF)

Intermodulation rejection

WB analog (70 dB)

NB analog (80 dB)

NB digital (75 dB)

 

85 dB (VHF, UHF)

85 dB (VHF, UHF)

85 dB (VHF, UHF)

Audio response

WB and NB analog

 

 

+1 dB, -3 dB from 6 dB per octave

de-emphasis 0.3 - 3 kHz ref 1 kHz

Audio distortion WB analog, 2%; NB analog, 2%
Audio input

Line, 0 dBm (nominal) adjustable

Loudspeaker, 1 W into 4 R

FM hum and noise WB analog, 50 dB; NB analog, 45 dB
Transmitter

Tunable frequency

VHF

UHF

 

136 – 174 MHz

380 – 420 MHz, 400 – 470 MHz, 450 – 520 MHz

Switching bandwidth Full sub band
Power output

VHF, 10 – 100 W

UHF, 5 – 50 W coming soon:100 W

(both adjustable in 1 dB steps)

Modulation method Direct digital synthesis

Spurious

and harmonic attenuation

100 dB VHF, 90 dB (UHF)

Maximum deviation

WB analog

WB analog

NB digital

 

± 5 kHz

± 2.5 kHz

± 2.5 kHz

Audio response

WB and NB analog, +1, -3 dB from

6 dB per octave pre-emphasis from

0.3 – 3 kHz referenced to 1 kHz

Audio distortion

WB analog <2%

NB analog <2%

Audio input

Line

Microphone

 

0 dBm (nominal) adjustable

~100 mV

Hum and noise

WB analog

NB analog

 

50 dB

45 dB

Emission designators

WB analog

NB analog

NB digital

 

16KOF3E

11KOF3E

8k10F1E

Demensions, Weight, Powerr Consumption
Dimensions (w x h x d)

19 x 14 x 17.5 inches

483 x 355 x 440 mm

Weight

Single channel, 61 lbs / 28 kg

Dual channel, 85 lbs / 39 kg

Power consumption

Single channel, standby, 55 W

Single channel, transmit, 380 W

Dual channel, standby, 81 W

Dual channel:

transmit 1 channel, 406 W

transmit 2 channels, 720 W

Specifications & methods per TIA 102CAAA/CAAB and TIA/EIA603 as applicable *NTTIA requirement for post 1 Jan 06 procurements. Type approvals: FCC ID: P6ZC100066 (VHF), P6ZC100063 (UHF); IC: 5397A-C100066 (VHF); ACA: Yes (UHF); FCC Part 68: ALT-AUS-36133-NI-E