BC-DX 789 05 Jan 2007 Private Verwendung der Meldun

the signal went back to a 16 QAM mode for a more robust broadcast. HCJB
had been changing the technical parameters of the DRM broadcast throughout
the day. "You need agile scheduling of transmission parameters," said
Weeks. "We'll go to a less robust, higher quality audio later in the day
as propagation improves."
Meantime, a few of HCJB's engineers in Ecuador, including Brent Weeks, are
working with the Global Technology Center in Elkhart on DRM development.
One of those areas is the central control system that drives and tells the
servo-motors what to do. "It needs to be upgraded for DRM," he said. The
station has recently done DRM test transmissions for the SWL Winterfest in
Pennsylvania, the National Association of Broadcasters Convention in Las
Vegas, and the NASB/USA DRM meetings in Elkhart. Other tests are being
beamed to Germany. "We are getting good reports for the middle-of-the-day
broadcasts to North America," Weeks said.
(Jeff White-FL-USA, June NASB Newsletter direct and via dxld)
Enclosed an article about the DRM activities of HCJB, sent out to
listeners in Germany.
Summary: Some years ago Harris contacted HCJB if they are interested in
participating in the development of DRM, because their HC-500 and HC-100
transmitter designs are highly regarded. The current DRM transmissions are
run at 4 kW, using old Siemens transmitters (PEP rated as 30 kW by TDP)
HCJB had bought from the Swiss military years ago for SSB transmissions.
These transmitters were already shut down, they first had to be connected
to the antenna system again. Harris supplied their Linux-based DRM-CSB100
content server, the Siemens transmitters have a sufficient linearity for
being used without modifications. It has turned out that the most reliable
mode for transmissions to Europe is A, actually designed for groundwave
coverage on MW/LW, but apparently noise is much more an issue here than
multipath propagation. The steerable antenna is used for these
transmissions.
The (remaining) antennas at Pifo will be dismantled in autumn. Period.
"Let's hope that ways and funds can be found to build a new antenna for
transmissions to Europe." (Refers to the hinted new site in Ecuador I
guess?)
The pictures sent out with this article are in the Yahoo group (under
"Miscellaneous"). (via Kai Ludwig-D, dxld June 28)
ETHIOPIA 9704.2 R. Ethiopia, Geja Dera, 1350-1412, 24 Jun, Vernacular,
chanting, talks, local pops; 44444, QRM de NGR 9705.
(Carlos Goncalves-POR, wwdxc BC-DX June 26)
FINLAND Digita's daughter company Digi Waves has received a license for
analog broadcasting on MW and SW for the period 1.7.2007-30.6.2010.
(Mauno Ritola-FIN, hcdx June 27)
So now we finally know why the plan to use Pori for Polskie Radio failed
in spring and Nauen had to be throwed in instead. Probably the RNW relays
on 963 were possible as special broadcasts without such a licence, but no
regular service.
The licence now issued is valid from July 1 until June 30 2010:
And it is almost needless to say that Digi Wave Oy has its seat at the
Digita headquarters: