Data sheet

HF Transmit/Receive Broadband System XB 2900

Especially designed for naval operational environment
Full HF frequency band (2 MHz to
30 MHz) for voice, data, and ALE
operation
Flexible system conguration from
2 to 32 lines in steps of 1
Very low levels of intermodulation
Very high exibility with regard to
system conguration and power
management

High system reliability and MTBF

gures
Extensive BITE and continuous monitoring facilities
Exciter/receiver sections with
optional plug-in modules for:
ALE operation
Fast data transmission
Pre-/post-selection
Digital speech processing
Automatic phone patch

Full integration into a central remote

control system
Common tried-and-tested standard
components for narrowband and
wideband systems
Compact system design
Max. output power 4 kW

HF Transmit/Receive Broadband System XB 2900

At a glance
The HF Transmit/Receive Broadband
System XB 2900 is a modern and
high-performance communications system especially designed for the naval operational environment. The XB 2900
is used by various NATO navies.
The XB 2900 is based on the idea
of combining the ships various HF transmission signals at the high power level and using only one broadband antenna system.
The system provides independent operational circuits n any available transmission mode such as the following:

The RF highpower signals are combined in highly linear 3 dB coupler units,

so that there are no active switching
elements at the high power levels.
The conguration of the system is based
on standard Rohde & Schwarz components such as the following:
Transceivers XK 2900L
Power Management Unit (PMU)
GV 2900
Power Combiners FK 2910 and
FK 2920, 2 kW and 4 kW
Load Resistors RBS 1000
Triplexer FK 2950 and diplexer
for broadband antenna system
(WBL, WBM, WBH)

The XB 2900 is able to handle the

following transceiver operating modes:
Embedded fast data Modem with
waveforms such as
MIL-STD-188-110A
MIL STD-188-110B, App. C
STANAG 4285
STANAG 4529
Data link operation e.g.:
LINK 11 (CLEW)
LINK 11 (SLEW)
LINK 22 (FF)
LINK Y (Mk II)
Automatic link establishment in line
with FED STD 1045/1046/1049

Voice
RATT
High speed data
Data Link 11/22 (FF)
Automatic link establishment (ALE),
etc

Functionality
The HF Transmit/Receive Broadband
System XB 2900 operates in the
frequency range 2 MHz to 30 MHz (RX
down to 10 kHz) with an antenna system
consisting of two or three broadband antennas. The frequency spacing between
the transmit channels can be reduced to
about 1 % separation.
The power management system provides
a wide variety of RF power levels for
the output signals by combining several
lines up to 4 kW and more (P3I).

The XB 2900
broadband system (in
operation on a frigate)

HF Transmit/Receive Broadband System XB 2900

Tailored to your specic

requirements
Using these standard components the
system can be precisely congured to
the number of lines and power requirements for each line needed, i.e. tailored
to the actual operational requirement,
e.g. 2 to 32 HF lines in steps of 1 in an
HF broadband antenna system. Each HF
broadband line is equipped with a Transceiver XL 2900L.
The HF receiver sections are connected
to a separate receive antenna distribution system.

Logistic aspects
A signicant logistic advantage of both
the broadband and narrowband systems
is that all power ampliers and exciters
are components of the same transceiver
type the XK 2900. These identical
transceivers provide extremely high system availability and reliability.

Outstanding reliability and

survivability
The RF power amplier stages are based
on MOSFET semiconductor technology
providing very high linearity and very
low RF noise gures.

RF distribution
RF output signals are routed via an antenna diplexer or triplexer to the broadband antenna system.
The frequency ranges of the different
antenna ports overlap so that coverage
of the entire HF frequency band is ensured.
The fact that output signals are transmitted by two antennas in slightly overlapping frequency ranges has no particular
inuence on the radiation pattern, since
the overall ship superstructure determines the radiation characteristics of the
antenna system.

System control
The integration of the HF Transmit/Receive Broadband System XB 2900
into a remote control system provides
control and monitoring from one control
terminal for all operations of the overall
ship communications system.

The passive RF combining system, without active electronic elements at high

power levels but with power management, results in a very high reliability
and MTBF gure for the overall system
and each individual communications
line.
The total power consumption of the HF
broadband system depends on the number of transmit lines actually in use and
their respective output power.
Power amplier stages that are not
transmitting operate in idle mode, i.e.
their power consumption is less than
250 W per amplier.
All components are equipped with extensive continuous monitoring and BITE
facilities that provide status information for the central control system and
the front-panel displays of the individual
units.

The system components can be changed

easily and quickly without recalibration.
Due to the compact design of the standard components the system can be installed in a minimum number of 19
standard racks.

Summary
Full HF frequency band (2 MHz to
30 MHz) for voice, data, and ALE operation
Operating frequency separation of
1%
Very low levels of intermodulation
Very high exibility with regard to
system conguration and power management
High system reliability and MTBF
gures
Extensive BITE and continuous monitoring facilities
Exciter/receiver sections with
optional plug-in modules for:
ALE operation
Fast data transmission
Pre-/post-selection
Digital speech processing
Automatic phone patch
High efciency through optimum use
of power amplier stages
Full integration into a central remote
control system
Common tried-and-tested standard
components for narrowband and
wideband systems
The use of the HF Transmit/Receive
Broadband System XB 2900 is not
limited to naval applications, but is also
very effective in stationary scenarios.

HF Transmit/Receive Broadband System XB 2900

VK2900

GX2900

Legend :

LEVEL 1

LEVEL 2

LEVEL 3

LEVEL 4

LEVEL 5

VK2900

VK2900

VK2900

VK2900

0.4 dB

0.4 dB

0.4 dB

GX2900
GX2900

GX2900

GX2900

HF Transmit/Receive Broadband System XB2900

: Power Management Unit

: Power Amplifier of Transceiver XK2900

: Exciter of Transceiver XK2900

GX2900
GX2900

GX2900
GX2900

3.4 dB

VK2900

VK2900

3.4 dB

VK2900

VK2900

3.4 dB
COUPLER

3.4 dB

VK2900

3.4 dB

VK2900

VK2900

3.4 dB
COUPLER

VK2900

3.4 dB
COUPLER

CONNECTION TO
RX ANTENNA MULTICOUPLER

AF LINES TO INTERCOM SYSTEM

CENTRAL CONTROL BUS

Note: One GX 2900 can control four transmitters, for example. It is not mandatory to use four GX 2900.

GX2900

GX2900

GX2900

GX2900

GX2900

GX2900

GX2900
GX2900

GX2900

GX2900

GX2900

GX2900

GX2900

VK2900

VK2900

GX2900

VK2900

VK2900

GX2900

VK2900

VK2900

0.4 dB
COUPLER

HF High Band

GX2900

VK2900

0.4 dB
VK2900

0.4 dB
VK2900

0.4 dB
VK2900

0.4 dB

VK2900

3.4 dB
COUPLER

3.4 dB
COUPLER

Antenna Triplexer

HF Medium Band

3.4 dB
COUPLER

0.4 dB

3.4 dB
COUPLER

VK2900

3.4 dB
COUPLER

3.4 dB
COUPLER

3.4d B
COUPLE R

HF Low Band

Typical solution for a HF broadband transmit/receive system

Specications
Power Combiner FK 2910 (2 kW)
Frequency range

2 MHz to 30 MHz

Mechanical data

Power handling

max. 1122 W, decoupled

max. 2150 W, coupled

RF input/RF outputs

Passband attenuation

0.4 dB, typ. 0.2 dB

Input/output impedance

Z = 50 (in passband range at termination with Zo = 50 )

RF inputs/RF outputs

coaxial socket, type N

Design

19 slide-in unit, 3 height units

coaxial socket, 7/16 connector system

Design

19 slide-in unit, 7 height units

Dimensions

depth 565 mm (measured from front panel, including connectors)

Weight

48 kg

Color

front panel: RAL 7035, semi-matt;

case: aluminium, chrome nish

Dimensions (D W H)

460 mm 482 mm 132 mm

MTBF

150 000 h

Weight

10.2 kg

MTTR

0.5 h

Color

front panel: RAL 7035, semi-matt

MTBF

390 000 h

MTTR

0.5 h

Power Management Unit GV 2900 (PMU)

Operating modes
Single-line mode

each VK 2900 amplier is allocated

to a single GX 2900 exciter

2 kW mode

two VK 2900 power ampliers are

driven by the same exciter signal, i.e.
Nos. 1 & 2 and Nos. 3 & 4

4 kW mode

all four VK 2900 ampliers are

coherently driven by the same exciter
signal

Mixed mode

one exciter unit controls two power ampliers, i.e. coherent driving two exciters
operate on independent lines and one exciter remains free for receiver operation

Mode switching time

<3 s

Power Combiner FK 2920 (4 kW)

Frequency range

2 MHz to 30 MHz

Power handling

max. 4100 W, decoupled

max. 2150 W, coupled

Passband attenuation

0.4 dB, typ. 0.2 dB

Input impedance

Z = 50 (in passband range at termination with Zo = 50 )

Return loss

23.5 dB, load resistance at all other ports

50

Output impedance

nominally Zo = 50

RF inputs/RF outputs

7/16 connector system

Design

19 slide-in unit, 5 height units

Dimensions (D W H)

460 mm 482 mm 221 mm

Weight

max. 17 kg

Color

HF data
Frequency range

TX: 2 MHz to 30 MHz

RX: 10 kHz to 30 MHz

Intermodulation output signals

(Pin = 7 dB PEP)

>50 dB referenced to single tone

front panel: RAL 7035, semi-matt

MTBF

390 000 h

Decoupling, single lines

>40 dB

MTTR

0.5 h

Harmonic suppression
(Pin = 7 dBm CW)

>40 dB

Antenna Triplexer FK 2950 (example)

Frequency range

2 MHz to 30 MHz

Passband range
WBL (wideband low), lowpass

on request

WBM (wideband medium),

bandpass

on request

WBH (wideband high), highpass on request

Passband attenuation

<0.4 dB, typ. 0.25 dB

Stopband attenuation
WBL

1.3 fo: 40 dB

WBM

fu/1.3: 40 dB; fo 1.3: 40 dB

WBH

fu/1.3: 40 dB; fo 1.3: 40 dB

Input impedance

Z = 50 , VSWR <1.28 in passband

range at termination with Zo = 50

Output impedance

nominally Zo = 50

Environmental data (valid for all components)

Operating temperature

25 C to +55 C

Storage temperature

40 C to +85 C

Altitude

3 000 m above sea level, T = 35 C

Humidity

26 C/41 C, 95 %, 5 days MIL-STD-810-E,

method 507.3 with slight condensation

Vibration

DIN IEC 60068-2-6

Random

DIN IEC 60068-2-64, equipment class B

Shock

MIL-STD-810-E, method 516.4

Protection

DIN 40050, IP20

EMC

MIL-STD-461-C, class 4 (CE 03, RE 02,

RS 03), EN 300339

Noise level

<55 dBA at a distance of 1 m

HF Transmit/Receive Broadband System XB 2900

Ordering information
Designation

Type

Order No.

HF Transceiver, 1 kW, installed in a 19 rack

XK2900L

6057.9992.12

HF Transceiver, 1 kW, installed in a 19 rack with selective level control (option)

XK2900L

6057.9992.13

Digitally Tuned RF Selection 40 dB (mandatory option)

FK2040

6096.9902.02

Power Management Unit

GV2900

6077.3519.02

Combiner 2 kW

FK2910

6077.8510.02

Combiner 4 kW

FK2920

6090.0003.02

Load Resistor (1 kW)

RBS1000

0207.4010.55

Load Resistor (2 kW, 5 kW)

on request

Triplexer

FK2950

6096.7051.00

More information at
www.rohde-schwarz.com
(search term: XB2900)

Certified Quality System

Certified Environmental System

Certified Quality System

Certified Quality System

ISO 9001

ISO 14001

AS 9100

AQAP-110

DQS REG. NO 1954 QM

DQS REG. NO 1954 UM

DQS REG. NO 1954 AS

www.rohde-schwarz.com
Europe: +49 1805 12 4242, customersupport@rohde-schwarz.com
USA and Canada: 1-888-837-8772, customer.support@rsa.rohde-schwarz.com
Asia: +65 68463710, customersupport.asia@rohde-schwarz.com

Audit report GP Q2-NO 96.07

is a registered trademark of Rohde & Schwarz GmbH & Co. KG Trade names are trademarks of the owners Printed in Germany (Pe ch)
PD 0758.2825.32 XB 2900 Version 02.01 July 2005 Data without tolerance limits is not binding Subject to change

Diplexer

6090.3502.02