DIPLEXER 1800/2100

The Kaelus DBC0021 combiner provides diplexing of 1800 and 2100MHz bands wherever both signals are required on a single output. This may be at the BTS end of the feeder or at the antenna, saving infrastructure capital expenditure and improving network reliability.


  • Combines 1800 and 2100 bands
  • Options for bypassing DC and AISG internal to the diplexer
  • Single or dual configurations available, suitable for indoor/outdoor use, wall or pole mounting kit
  • Built in lightning protection on all ports

technical specifications
Port Name 1800 2100
Passband 1710 - 1880MHz 1920 - 2170MHz
Insertion loss 0.20dB typical, 0.3dB maximum 0.20dB typical, 0.35dB maximum
Return loss 20.7dB minimum
EVM 0.3% typical / 2% maximum over 4.2MHz
Group delay variation 7ns maximum 5ns maximum
Maximum input power 250W (average) / 1kW (PEP) 160W (average) / 1kW (PEP)
Intermodulation products <-155dBc (2 x 20W, 3rd order)
Attenuation COM to 1800  
698-960MHz 75dB min N/A
1920 - 1980MHz 55dB minimum N/A
2110 - 2170MHz 55dB minimum N/A
2450 - 2900MHz 60dB minimum N/A
Attenuation COM to 2100  
698 - 960MHz N/A 50dB minimum
1710 - 1880MHz N/A 55dB minimum
2450 - 2900MHz N/A 60dB minimum
dc / aisg
Passband 0 - 3MHz
Insertion loss 1dB maximum
Return loss 12dB typical
DC current rating 2.5A/50V maximum
For further details of environmental compliance, please contact Kaelus.
Temperature range -40ºC to +65ºC | -40ºF to +149ºF
Ingress protection IP67, outdoor
Lightning protection 3kA maximum (10/3500us), IEC61312-1
MTBF >1,000,000 hours
Dimensions H x D x W (single unit) 270 x 200 x 53mm | 10.62 x 7.87 x 2in
Dimensions H x D x W (twin unit) 270 x 200 x 112mm | 10.62 x 7.87 x 4.4in
Weight 4.0kg | 8.8lbs single unit
8.0kg | 17.6.8lbs dual unit
Finish Painted, light grey (RAL7035)
Connectors DIN 7-16 (F) x 3 long neck (single unit)
DIN 7-16 (F) x 6 long neck (twin unit)
Mounting Pole/wall bracket supplied with two metal clamps for 45-178mm diameter poles
ordering information
Part Number Description
DBC0021F3V1-1 Diplexer, DC/AISG path, common to 2100 port
DBC0021F3V2-1 Diplexer, DC/AISG path, common to 1800 port
DBC0021F3V3-1 Diplexer, DC/AISG path, common to 1800 and 2100 port
DBC0021F3V4-1 Diplexer, No DC/AISG paths fitted
DBC0021F3V21-2 Diplexer, DC/AISG path, common to 2100 port, twin unit
DBC0021F3V22-2 Diplexer, DC/AISG path, common to 1800 port, twin unit
DBC0021F3V23-2 Diplexer, DC/AISG path, common to 1800 and 2100 port, twin unit
DBC0021F3V24-2 Diplexer, No DC/AISG paths fitted, twin unit
electrical block diagram
mechanical block diagram