BC-DX 789 05 Jan 2007 Private Verwendung der Meldun

north of the site, presumably for the CNR domestic services on 855 and
1008 kHz.
(Alan Davis-Asia, ARC MV-Eko Nov 12)
and 28 SW array masts at
24 52 56.89 N 102 29 17.25 E
1521 The Hutubi 500 kW CRI transmitter in Xinjiang, NW of Urumqi, seems
to have several directional arrays at its disposal. It is off for two
minutes for antenna switching from 1257, 1457, 1557, 1657, 1757. The sign
off is at 1957.
(Olle Alm-SWE, ARC MV-Eko Nov 12)
CUBA/DRM Radio Habana Cuba Dxers Unlimited's midweek edition for Nov
13-14 2007, by Arnie Coro radio amateur CO2KK.
This program features re-runs about solar cycle predictions and about DRM.
Hi amigos radioaficionados ... from Havana, this is the midweek edition of
your favorite radio hobby program the one and only featuring the most up
to date HF propagation updates and forecasts ...
I am Arnie Coro, radio amateur CO2KK, your host here at Dxers Unlimited, a
show devoted to the promotion and development of our wonderful hobby,
yours and mine ... RADIO ...
Item one: Scientists now are voicing their different opinions about the
forecasts that upcoming solar cycle 24 will be the one reaching the lowest
peak number of sunspots in many, many years ... as a matter of fact, the
peak mean sunspot number expected, and this, I emphasize is according to
one school of thought is said to be barely 75 mean sunspots, something
that will turn the frequency range above 20 megaHertz into the equivalent
of a VHF band for years to come!!! ...
So, if we believe this forecast it's about time to prepare for much lower
solar activity to last for a loooong time amigos!!! The other group of
solar scientists says that cycle 24 may be very active, and even so active
as to reach an average sunspot number that will get close to the record
breaking cycle 19, the one that passed the 200 sunspot number mark.
Item two: Uncoordinated DRM,
digital radio mondiale broadcasts are continuing to harm reception of
regular, standard, AM double side band plus full carrier, A3 mode
international shortwave broadcasts, inside the bands assigned by the ITU
for that service... The reason has nothing to do with DRM broadcast
technology at all, the main causes of this problem can be traced to not
coordinating properly so as to make DRM transmissions compatible with
standard AM and also because of poorly adjusted transmitters used for some
DRM broadcasts that are to be blamed according to experts.
Several highly qualified radio broadcasting engineers think that there is
no room for DRM on the present high frequency international broadcast
bands due to what they describe as an unforethought incompatibility
between AM and DRM..., in other words, they are appealing creating special
frequency spectrum allocations for DRM transmissions, so that they will
not interfere with the traditional technology used by short wave
broadcasters since the very early days or radio. This criteria started
when several chief engineers at stations suffering from interference from
DRM transmissions asked for those DRM broadcasts to be placed on a
separate segment of the assigned bands, effectively giving them a sub-
band, something that in my opinion may prove to be a very wise move.