DBC0127F1V62-1

TWIN SAME BAND COMBINER 850
A-BAND

Designed to combine two 850MHz base stations, the Kaelus DBC0127 provides a low loss combiner with excellent insertion loss and passive inter-modulation performance.

FEATURES

  • Combines legacy CDMA with single 5MHz LTE carrier
  • Extremely close (zero guardband) spacing
  • Designed for low passive inter-modulation
  • DC/AISG autosensing
  • Low insertion loss

technical specifications
Band NameR1 (CDMA)R1 (LTE)
PassbandCH201, 242, 283, 691EARFCN 2435
Insertion loss1.0dB typical1.0dB typical
EVM2% typical, 7% maximum0.5% typical, 2% maximum
Group delay variation270ns maximum250ns maximum
Absolute group delay330ns maximum (band-edge)
33ns typical (mid-band)
350ns maximum (band-edge)
75ns typical (mid-band)
Maximum input power160W (average) / 1600W (PEP)80W (average) / 800W (PEP)
isolation com port must be terminated in 50ohms
R1 (CDMA)
TX frequency range
35dB typical, 30dB minimum
R1 (LTE)
TX frequency range
35dB typical, 30dB minimum
R1 (CDMA)
RX frequency range
35dB typical, 30dB minimum
R1 (LTE)
RX frequency range
35dB typical, 30dB minimum
electrical
Impedance50Ohms
Return loss20dB minimum, 24dB typical.
Intermodulation products-153dBc maximum all ports with 2 x 20W carriers (out of band IM testing <3 minutes)
dc / aisg
The DC/AISG path is automatically selected. In bottom of the tower applications (combiner mode), each RF channel port is sequentially checked for the presence of DC voltage. If more than one port has voltage, the port that has the highest (programmed) priority is passed to the common port. If a short circuit is detected on the common port DC/AISG is disabled. In top-of-tower applications (splitter mode), DC/AISG is passed to all ports that do not present a short circuit. If a short circuit is detected, the shorted RF port will be disabled for DC/AISG while other RF ports remain connected.
Input voltage range8 – 30V DC
DC current rating2.0A continuous, 2.5A maximum
Compliance3GPP, TS 37.461
Current consumption5mA typical, 10mA maximum
Port priority (combiner mode)R1 (LTE) first, R1 (CDMA) second
environmental
For further details of environmental compliance, please contact Kaelus.
Temperature range-20ºC to +65ºC | +4°F to +149°F
Ingress protectionIP67
Altitude3,000m | 10,000ft maximum
Lightning protectionRF: ±5kA maximum (8/20us)
MTBF>1,000,000 hours
ComplianceETSI EN 300 019-1-4 class 4.1, RoHS
mechanical
Dimensions H x D x W 319 x 257 x 266mm | 12.56 x 10.13 x 10.47in
Weight22kg | 48.5lbs
FinishPainted, light grey (RAL7035)
ConnectorsDIN 7-16 (F) x 6 long neck
MountingPole/wall bracket supplied with two metal clamps for 45-178 mm diameter poles
ordering information
Part NumberR1 (CDMA)R1 (LTE)Description
DBC0127F1V62-1CH201, 242, 283, 691EARFCN 2435Twin SBC, A-band
DC AUTO R1 (LTE)
electrical block diagram
ELECTRICAL BLOCK DIAGRAM
mechanical block diagram
MECHANICAL BLOCK DIAGRAM

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