Dual-Band Combiner

Dual-Band Combiner

698 – 806 MHz 824 – 960 MHz

• Designed for co-siting purposes

• Enables feeder sharing

• Integrated auto-sense technology for automatic DC / AISG detection and bypass functionality.

Combine Mode (near BTS):

In combine mode, the auto-sense combiner has the ability to operate in three different functions. These functions define the prioritisation of the DC input signals (more details on next page):

1. First In - First Out Function (Factory default setting)

2. Priority Controlled Function

3. Exclusive User Function

Split Mode (near antenna):

In split mode, the auto-sense combiner automatically detects connected Antenna Line Devices and bypasses or stops the DC / AISG signal accordingly.

A detailed manual about Auto-Sense technology can be downloaded on our homepage.

• Suitable for indoor or outdoor applications

• Wall or mast mounting

• Available as a single unit, or for XPol antennas as a double unit

• Built-in lightning protection

• Low insertion loss

• High input power

AUTO-

SENSE

Technical Data

Type No.

78211287

Single Unit clamps included

78211288

Double Unit

Pass band

Band 1

Band 2

Insertion loss

Port 1 ↔ Port 3

Port 2 ↔ Port 3

Isolation

Port 1 ↔ Port 2

VSWR

Impedance

Input power

Band 1 / Band 2

[MHz]

[MHz]

[dB]

[dB]

[dB]

698 – 806

824 – 960

< 0.3 (698 – 796 MHz); < 0.5 (796 – 806 MHz)

< 0.5 (824 – 834 MHz); < 0.3 (834 – 960 MHz)

Intermodulation products

Temperature range

[Ω]

[W]

[dBc]

[°C | °F]

> 50

< 1.2 (698 – 806 MHz / 824 – 960 MHz)

50

< 500 / < 500

< −160 (3 rd order; with 2 x 20 W)

−40 ... +60 | −40 ... +140

Connectors

Application

DC/AISG transparency

Port 1 ↔ Port 3

Port 2 ↔ Port 3

Lightning protection

Mounting

[mA]

[mA]

[kA]

7-16 female (long neck)

Indoor or outdoor (IP 66)

Auto-sense (max. 2000)

Auto-sense (max. 2000)

3, 10/350 µs pulse

[mm | in] Wall mounting: With 4 screws (max. 8 | 0.315 diameter)

Mast mounting: With included clamp set

Single Unit: 2.5 | 5.51 / Double Unit: 5.0 | 11.02

Weight [kg | lb]

Packing size [mm | in] Single unit: 365 x 235 x 145 | 14.37 x 9.25 x 5.71 / Double unit: 365 x 235 x 210 | 14.37 x 9.25 x 8.27

Dimensions (w x h x d) [mm | in] Single Unit: 153 x 170.5 x 80.5 | 6.02 x 6.71 x 3.17 / Double Unit: 153 x 170.5 x 165.5 | 6.02 x 6.71 x 6.52

(without connectors, without mounting brackets) www.kathrein.com

78211287, 78211288 Page 1 of 3

KATHREIN-Werke KG · Anton-Kathrein-Straße 1-3 · P.O. Box 10 04 44 · 83004 ROSENHEIM · GERMANY · Phone +49 8031 184-0 · Fax +49 8031 184-820


698 – 806 MHz 824 – 960 MHz

Accessories (included)

Type No.

734365 [mm | in]

Clamp set suitable for mast diameter of

45 – 125 | 1.77 – 4.92

Clamp Set

Accessories (order separately)

Type No.

78410367

Description

50-Ohm load

50-Ohm load

Auto-Sense Combiner Functions for the Interconnection of Different Base Stations (Installation Close to the Base

Station – Combine Mode)

First In - First Out Function (Factory Default Setting)

If the First In – First Out function is set, then the first base

Station (BTS) which supplies the auto-sense combiner with

DC voltage at any input port is bypassed to the common port. The DC from further base stations will be ignored.

Priority Controlled Function

If the priority controlled function shall be used, a corresponding priority table is set ex-factory which needs to be defined by the customer when ordering. One example of a priorisation table is shown below. In case DC / AISG signals are applied to two or more input ports simultaneously, the

BTS with the higher priority will be bypassed to the common port. Any DC signal from a lower prioritised input port will not be bypassed. If the port with the highest priority is not supplied with a DC signal, the DC signal from the BTS with the next lower priority will be connected through to the common port.

Connector

Port 1

Port 2

Priority

B (lowest)

A (highest)

Exclusive User Function

If the Exclusive User function is set in the combiner, then the first base station which supplies an appropriate DC voltage at any input port is bypassed to the common port.

If a second DC/AISG signal is erroneously fed into the combiner, then none of the DC/AISG signals will be allowed to bypass to the common port.

Please note: If the combiner is mounted near the antenna

(split mode), the behaviour is independent of any of the prioritisation functions described above. In this mode, the auto-sense combiner automatically detects Antenna Line

Devices at the output ports and bypasses or blocks the DC/

AISG signal at each port accordingly.

Page 2 of 3 78211287, 78211288 www.kathrein.com



824 – 960 MHz 698 – 806 MHz

Dimension

264,7

229,7

15

22,2

284,7

241

170,5

Please Note:

As a result of more stringent legal regulations and judgements regarding product liability, we are obliged to point out certain risks that may arise when products are used under extraordinary operating conditions.

Extraordinary operating conditions, such as heavy icing or exceptional dynamic stress

(e.g. strain caused by oscillating support structures), may result in the breakage of a mast mounted device or even cause it to fall to the ground.

These facts must be considered during the site planning process.

The combiners are designed to operate under the environmental conditions as described in ETS 300 019-1-4 class 4.1 E and have passed environmental tests as recommended in

ETS 300 019-2-4.

The installation team must be properly qualified and also be familiar with the relevant national safety regulations.

The details given in our data sheets have to be followed carefully when installing the combiners and accessories.

The limits for the coupling torque of RF connectors must be obeyed.

Terminate unused inputs with a suitable 50-Ohm load, e.g.

78410367.

Any previous datasheet issues have now become invalid.

www.kathrein.com

78211287, 78211288 Page 3 of 3


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