Designed to combine 1900 and AWS technologies the Kaelus DBC0051 provides a low loss combiner with excellent insertion loss and passive inter-modulation performance. The DBC0051 is AWS 3 / AWS 3U and AWS 4 ready.


  • AWS 3 / AWS 3U and AWS4 ready
  • Enables the sharing of antennas by 1900 and AWS networks
  • Multiple DC bypass/AISG configurations field settable
  • Offers low insertion loss and high isolation
  • Low passive IM performance
  • Wall or mast mounting

technical specifications
Band Name 1900 Band AWS Band
Passband 1850-1990MHz 1695-1780MHz / 2110–2200MHz
Insertion loss 0.2dB typical
Group delay variation 10ns maximum (in any 3.84MHz band)
Maximum input power 250W (average) / 3kW (PEP) 250W (average) / 3kW (PEP)
Attenuation 50dB minimum, 70dB typical @ AWS 50dB minimum, 57 dB typical @ 1900
Impedance 50Ohms
Return loss 22dB minimum, 24dB typical
Intermodulation products -161dBc typical / -155dBc maximum all ports with 2 x 20W carriers
Isolation 50dB
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), IEC61000-4-5
MTBF >1,000,000 hours
Compliance ETSI EN 300 019 class 4.1, RoHS
Dimensions H x D x W (single unit) 217 x 127 x 55mm | 8.54 x 5.0 x 2.17in
Dimensions H x D x W (twin unit) 217 x 127 x 113mm | 8.54 x 5.0 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
Mounting Pole/wall bracket supplied with two metal clamps for 45-178 mm diameter poles
ordering information
Part Number Description
DBC0051F3V51-1 Diplexer,1900/AWS3-4, combiner with DC switch
DBC0051F3V51-2 Diplexer, x2, 1900/AWS3-4, combiner with DC switch
DBC0051F3V51-6R Diplexer, x6, 1900/AWS3-4, combiner with DC switch
electrical block diagram
mechanical block diagram