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 |
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| BAND NAME | R1 (CDMA) | R1 (LTE) | |||||||||||||
| Passband | CH201, 242, 283, 691 | EARFCN 2435 | |||||||||||||
| Insertion loss | 1.0dB typical | 1.0dB typical | |||||||||||||
| EVM | 2% typical, 7% maximum | 0.5% typical, 2% maximum | |||||||||||||
| Group delay variation | 270ns maximum | 250ns maximum | |||||||||||||
| Absolute group delay | 330ns maximum (band-edge) 33ns typical (mid-band) |
350ns maximum (band-edge) 75ns typical (mid-band) |
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| Maximum input power | 160W (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 | |||||||||||||||
| Impedance | 50Ohms | ||||||||||||||
| Return loss | 20dB 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 range | 8 – 30V DC | ||||||||||||||
| DC current rating | 2.0A continuous, 2.5A maximum | ||||||||||||||
| Compliance | 3GPP, TS 37.461 | ||||||||||||||
| Current consumption | 5mA 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 protection | IP67 | ||||||||||||||
| Altitude | 3,000m | 10,000ft maximum | ||||||||||||||
| Lightning protection | RF: ±5kA maximum (8/20us) | ||||||||||||||
| MTBF | >1,000,000 hours | ||||||||||||||
| Compliance | ETSI 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 | ||||||||||||||
| Weight | 22kg | 48.5lbs | ||||||||||||||
| Finish | Painted, light grey (RAL7035) | ||||||||||||||
| Connectors | DIN 7-16 (F) x 6 long neck | ||||||||||||||
| Mounting | Pole/wall bracket supplied with two metal clamps for 45-178 mm diameter poles | ||||||||||||||
ORDERING INFORMATION |
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| PART NUMBER | R1 (CDMA) | R1 (LTE) | DESCRIPTION | ||||||||||||
| DBC0127F1V62-1 | CH201, 242, 283, 691 | EARFCN 2435 | Twin SBC, A-band DC AUTO R1 (LTE) |
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ELECTRICAL BLOCK DIAGRAM |
MECHANICAL BLOCK DIAGRAM |
