Thomson Broadcast Puts Shortwave on FM
on 09.12.2011
http://www.radioworld.com/article/thomson-broadcast-puts-shortwave-on-fm/24336
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Shortwave is an efficient technology for delivering programming to a wide area
from a single
transmission site, but FM provides higher quality audio and a ready supply of
inexpensive
receivers. At IBC2011, Thomson Broadcast is demonstrating a solution that
bridges the two
technologies, using the DRM30 digital radio standard to distribute programming
for
retransmission on FM.
With the system, a broadcaster originating a DRM30-encoded short-, long- or
medium-wave
signal could take the same over-the-air signal listeners with a DRM receiver
can hear and,
using a DRM-FM transponer, demodulate and transpose it to an FM signal that can
be
picked up by an standard FM receiver, including the sort common in many mobile
phones.
For example, a medium-wave channel with a bandwidth of 9 kHz could be used to
distribute
two DRM30 digital audio programs at a bitrate of up to 14.7 kbps; if the
channel is extended
to 18 kHz, bitrates of up to 26.5 kbps would be possible.
The DRM-FM rebroadcasting transmitter takes the over-the-air DRM30 signal,
decodes the
digital programs and then can retransmit the two services locally on FM.
The system could be used by NGOs or international broadcasters to distribute
programming
to low-power FM stations in remote or wide-spread areas without the need to use
satellite
connections.Standard rig : ICOM R75 / 2x16 V / m@h40 heads Sennheiser
Please read and distribute this 15 year research article
http://tinyurl.com/5vzg7e
Please read my article on SINPO at http://tinyurl.com/yt7qjd
________________________
http://zlgr.multiply.com (radio monitoring site plus audio clips ) MAIN SITE
http://www.delicious.com/gr_greek1/@zach (all mypages !!)
........
Zacharias Liangas , Thessaloniki Greece
greekdx @ otenet dot gr ---
Pesawat penerima: ICOM R75 , Lowe HF150 , Degen 1102,1103,108,
Tecsun PL200/550, Chibo c300/c979, Yupi 7000
Antenna: 16m hor, 2x16 m V invert, 1m australian loop
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THE INFORMATION IN THIS ARTICLE IS FREE. It may be copied, distributed
and/or modified under the conditions set down in the Design Science License
published by Michael Stutz at
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