Antenne Bayern Chooses 2wcom
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TEN MILIION CIfiCUITS
EHIPPED AND COUNTII.IG!
BY THOMAS ERL
Bayern is Germany's most listened to
radio station, with more than 3.E million
listenersa day and an averageofover 1.2
million listeners per hour. It transmits
its programs using 42 FM transmitters.
The signal is supplied via the Astra 3A
through satellite links.
In 2009 the replacementof Comstream
satellite equipmentwas to be carried out
by our partner Media Broadcast. After
detailedtesting it was decidedto opt for a
conccpt with complete redundancy.This
system is maintained and opcrated by The 2wcom DSR01at work in the reck.t AntenneBayem.
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Using satellites for distribution requires reliable integrated satellite receivers and decoders (IRD). For our
application,the focus was placedon the following featurcs:
absolute time synchronized receiver, ideally fitted with
PCR time stampto avoid time delaysduring RDS switchover of overlapping FM transmittcrs;exccllent sound qual-
ity, with AAC-LC and MPEG Layer II option for encoding
of DVB-S signals;outstandingerror correction to guarantee receptioneven in bad weatherconditions: and noncritical power supply componentswith long-term stability.
Another considerationwas the need for dynamic transmission of RDS data becauseAntenne Bayern sendsout
dynamic data, i.e., radio text and TMC services.
Using these guidelines we opted for the DSROI IRD
from 2wcom in Germany. In addition to the aforementioned features,the DSROI receivesDVB-S2, an option for
tasksin the future basedon the DVB-S standard.
The configuration of the DSROI can be carried out
via Web interface conveniently. This enablcs new configurations as well as copying existing configurationsto a
receiver of the sametype without complications.
The complete systemis bcing integratedin the network
Eanagem€ntcontrol system of Media Broadcastand is to
bc monitorcd 24171365.
Another useful featureof the 2wcom DSR01 is the ability to use definable SNMP traps (alarms) that can be triggered and forwarded at predefinedconditions, e.g., loss of
signal in adverseweatherconditions,loss of auxiliary RDS
data, audio errors and more. Notification of thege conditions can be forwarded via SNMP or via relay contacts.
Apart from predefined switching thresholdsit is possible
to accessdifferent presetsvia input control (GpI) in order
to switch over to a certain carricr or satellite if neccssary.
We havc also been happy with the customersupport of
2wcom, listening and correspondingto our demands as
well as carrying out improvementspromptly and integrating those into updatesquickly.
For Informatlon, contact Blll Marrlot at 2wcom/
vlaRadlo In Florlda 8t (321) 242-0001'or vlslt www.
Studio-to Transrnitter-Linkdoes rt
alf - and protccts against t-lackers.
Meliciour vifus6r. Power outäg€s
and Uncompressed HD bit enot
Fven automatic and
instänt s$tching ro anaiog links if
All with a new hybrid lP-Tt "Brsr ,rf
Eoth Worlds" architectureto leverage
studiolP with the ArmoredTt PCAU.
and qualig. That fact is, Tts cort less
today, so you can have it all. Sectrre
HD. FM and AM wrth Enhanced
RStl: and telernetry.