On september 9th 1998 Prof. Uwe Kraus, DJ8DW, and his team succeeded
in transmitting firstly moving color pictures with sound via digital amateur television link
over a distance of 100 km with 2 Mhz bandwidth on 434 Mhz.
The transmitter at the Bergische Universitaet in Wuppertal (near
Cologne) sent 44 seconds of a car race from Video-CD in MPEG-1 using
GMSK modulation via directional antennas to Someren in the Netherlands.
There at the home qth of DJ8DW the signal was received clearly in
spite of rain on the way and was saved on harddisk (about 10 MByte),
software decoding of MPEG-1 video and sound is possible under Windows 95.
This recording was shown at the "UKW-Tagung" in Weinheim in the stand of
AGAF e.V. (the german ATV organisation) besides two samples of digital
modulator equipment built by german radio amateurs. A series of articles on
Digital-ATV by DJ8DW is printed in TV-AMATEUR, the magazine of AGAF.
73 Klaus, DL4KCK
