DBC0134F1V72-1

DBC0134F1V72-1

TWIN SAME BAND COMBINER
CDMA850 A'/B' + LTE700/LTE850 A/B-BANDS

Designed to combine LTE700/LTE850 radio(s) with legacy CDMA850 equipment, the Kaelus DBC0134 is a low loss twin combiner with excellent insertion loss and passive inter-modulation performance.

FEATURES

  • Combines/splits legacy CDMA850 & LTE700H/LTE850 A/B-bands
  • Supports 10MHz LTE expansion in 850MHz A and/or B-bands
  • Allows LTE700/LTE850 & CDMA routing to separate antennas
  • Ideal for use with dual band LTE700 & LTE850 radios
  • Supports CDMA channels placed in either A' or B'
  • Extremely close (zero guardband) spacing
  • Designed for low passive inter-modulation
  • DC/AISG autosensing with LED status
  • Low insertion loss

technical specifications
Band NameR1 (CDMA)R1 (LTE)
PassbandA' (CH691), B' (CH738/CH779 or CH770)LTE700, LTE850 (746-844.5, 869-889.5MHz)
Insertion loss1.1dB typical746-798MHz: 0.45dB typical
824-844.5, 869-889.5MHz: 1.0dB typical
Return loss20dB min, 24dB typical20dB min, 24dB typical
EVM3% typical, 7% maximum0.5% typical, 2% maximum
Group delay variation250ns maximum270ns maximum
Absolute group delay350ns maximum (band-edge)
120ns typical (mid-band)
300ns maximum (band-edge)
75ns typical (mid-band)
Maximum input power80W (average) / 800W (PEP)160W (average) / 1600W (PEP)
isolation com port must be terminated in 50ohms
CDMA 850
TX frequency range
35dB typical, 30dB minimum
LTE 850
TX frequency range
35dB typical, 30dB minimum
CDMA 850
RX frequency range
35dB typical, 30dB minimum
LTE 850
RX frequency range
35dB typical, 30dB minimum
746-806MHz33dB typical, 28dB minimum
electrical
Impedance50Ohms
Intermodulation products-155dBc 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. To reduce current consumption at low supply voltage, LEDs are sequentially enabled.
Input voltage range7.5 – 30V DC
DC current rating2.5A continuous
Compliance3GPP, TS 25.461
Current consumption15mA typical, 25mA maximum
Port priority (combiner mode)R1 (LTE) first, R1 (CDMA) second
LEDs1 bi-colour LED per RF port connector
LEDs, bottom of tower application:
- DC/AISG not presentOff
- DC/AISG passGreen
- DC/AISG present, not passedRed
LEDs, top of tower application:
- DC/AISG passGreen
- All ports disabledCOM LED red
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 class 4.1, RoHS
mechanical
Dimensions H x D x W 319 x 257 x 266mm | 12.56 x 10.13 x 10.47in
Weight20.5kg | 45.1lbs
FinishPainted, light grey (RAL7035)
Connectors4.3/10 (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
DBC0134F1V72-1A' (CH691), B' (CH738/CH779 or CH770)LTE700, LTE850 (746-844.5, 869-889.5MHz)Twin SBC, 700, 850
DC AUTO R1 (LTE)
electrical block diagram
ELECTRICAL BLOCK DIAGRAM
mechanical block diagram
MECHANICAL BLOCK DIAGRAM

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