Live DAB+ test transmission in Geneva during the EBU Radio Week 2012 with 100W ERP

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Revision as of 11:46, 16 February 2012

During the EBU Digital Radio Week, a live DAB+ transmission using 100 Watts ERP is taking place.

The idea is to demonstrate a working setup using mmbTools coupled to a VHF power amplifier, mask filter and antenna. This kind of setup can be used by local or community radios to build affordable DAB+ transmission. The full setup cost is around 20'000 €. The most expensive item is the 600W power amplifier. The antenna used has a gain of 5dB so the maximum radiated power of this kit is around 1.8 kWatts, that is enough to cover a medium/big city (depending on terrain topology and antenna location)

Schema of the kit and setup

CRC mmbTools creator looking at setup

The coverage has to be evaluated but will probably be patchy as the radiated power is limited and antenna location is far from ideal (roof from EBU). However, the signal should be received in Grand-Saconnex area and west Geneva county.

Content on the multiplex will vary. At the moment it is:

Program Bitrate SID Program Type Comment
Banane DAB+ 88 4002 Student Radio
Open Broadcast DAB+ 88 4003 User Generated Radio
Maxxima DAB+ 88 4004 Dance
Backstage Radio DAB+ 88 4005 User Generated Radio
Nashvillage DAB+ 88 4006 Country Music SVG RadioVIS for this program
LeMixx DAB+ 88 4007 Funk&Groove
Uzic DAB+ 88 4008 Techno Minimal
Chat DAB+ 64 4112 File loop James Cat purr

The transmission is on channel 10A. Ensemble label is EBU/UER and EID 4FFF.

Some channel are with RadioDNS/RadioVIS hybrid radio slideshow service activated. Nashvillage is demonstrating RadioVIS SVG slideshow showing a small voting application for the next song (working on Frontier Silicon Milan module based prototype firmware). At the moment no DAB slideshow is made but it may be activated later in the trial.

Ebukit.jpg

(thumbnail)
Mechanical Mask filter
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Power amplifier and its power supply
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Antenna on EBU roof
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