Kaelus world-proven outdoor solutions provide strong RF performance coupled with rugged operation. The DBC0051 enables antenna and feeder sharing for 1900 and AWS systems thereby saving capital and operational expenditure and minimizing tower loading


  • Offers low insertion loss with high isolation
  • Field selectable DC/AISG bypass with built-in lightning protection
  • Low passive IM performance
  • Outdoor, indoor, wall or pole mounting

technical specifications
Port Name 1900 AWS
Passband 1850-1990MHz 1710-1755MHz / 2110–2155MHz
Insertion loss 0.3dB typical
Return loss 24dB typical
Group delay variation 10ns maximum (in any 3.84MHz band)
Maximum input power 250W (average) / 3kW (PEP) 250W (average) / 3kW (PEP)
Attenuation 1900 to COM, 1710-1755 MHz 60dB minimum N/A
Attenuation 1900 to COM, 2110-2155MHz 70dB typical, 65dB minimum N/A
Attenuation AWS to COM, 1850-1990MHz N/A 70dB typical, 65dB minimum
Impedance 50Ohms
Intermodulation products -161dBc typical / -153dBc maximum all ports with 2 x 20W carriers
dc / aisg
A field selectable DC/AISG path is achieved via mechanical links on a IEC60130-9, 8-pin female connector (see electrical block diagram).
Passband 0 - 3MHz
Insertion loss, single DC/AISG pass 1dB maximum
Return loss, single DC/AISG pass 12dB minimum
Insertion loss, two DC/AISG pass 4.5dB typical
Return loss, two DC/AISG pass 9dB typical
Input voltage range ± 31V
DC current rating 2A continuous, 4A peak
For further details of environmental compliance, please contact Kaelus.
Temperature range -40ºC to +65ºC | -40ºF to +149ºF
Ingress protection IP67
Lightning protection RF: ±5kA maximum (8/20us)
MTBF >1,000,000 hours
Compliance EMC:EN301 489, ETSI EN 300 019 class 4.1, RoHS
Dimensions H x D x W (single unit) 203 x 158 x 55mm | 8.0 x 6.2 x 2.17in
Dimensions H x D x W (twin unit) 203 x 158 x 113mm | 8.0 x 6.2 x 4.45in
Weight 3.4kg | 7.5lbs (single unit)
6.8kg | 15lbs (twin 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 45-178 mm diameter poles
ordering information
Part Number Description
DBC0051F2V51-1 Diplexer, 1900/AWS, single, combiner with DC switch
DBC0051F2V51-2 Diplexer, 1900/AWS, dual, combiner with DC switch
electrical block diagram
mechanical block diagram