BC-DX 841 04 Jan 2008 Private Verwendung der Meldun

The transmitters can be divided into two groups - those installed under
the 1963 project, and those installed as part of the modernization plan in
the 1980's. The GE 250-kilowatt transmitters were part of the original
equipment, manufactured in 1961. They have been the "workhorses" of the
station, and they still play an important pat in the Greenville operation.
The can cover 6-21 MHz and they have been modified various times over the
years, including the installation of solid state amplifiers. The
Continental 420's were made in the late 1940's and are run at half-power -
250 kw. The Continental 617A was used to relay programs overseas in single
sideband.
In the mid-1980's, Greenville was selected as a location for testing of
different models of modern shortwave transmitters. Four transmitters were
purchased from leading manufacturers - an AEG Telefunken and a Brown
Boveri, which were full production models; and a Marconi and a Continental
model 420B, which were prototypes. The AEG and the BBC are currently in
use at Site B. The other two were installed at Site A, which is
mothballed. The BBC and AEG transmitters use pulse step modulation
techniques.
The 41 antennas are located in an arch around the transmitter building.
They cover from 3 to 305 degrees azimuth, although the most used azimuths
are 90 to 236 degrees, from Africa to Central America. There are 16
curtain antennas which operate from 9.6-11.7 MHz, 20 rhombics which
operate from 6.1-26 MHz and from 3 to 286 degrees, two log periodics which
operate from 4-10 MHz for communications and program relays that are
inactive, one TCI curtain antenna that was originally installed for
testing for the global IBB network, and two simple dipoles which operate
on 6 MHz at 10 and 174 degree azimuths.
Three-phase commercial power is supplied by the local electrical company,
and there's a diesel generator which can be used in case of a commercial
power failure. The site has a complete machine shop for the fabrication of
small parts. Greenville maintains a large parts inventory, including many
high-power tubes and capacitors that are becoming obsolete. There is a
major water conditioning system for transmitter cooling requirements.
After the video, Adil Mina of Continental Electronics pointed out that the
director of the Office of War Information in 1942 later went on to found
Continental in Dallas.
Walt Konetsco mentioned that "there's some interest in the B Site for WWV,
because they're looking for a facility on the East Coast." The A and B
sites are identical in terms of transmitters and antennas. Konetsco said
that tours of the A Site are tightly controlled since 9/11, but exceptions
may be made for international broadcasters who make advance arrangements.
The Delano (California), Kavala (Greece) and Tangier IBB transmitter sites
were recently closed. IBB still has relay stations in Sao Tome (a small
island off the west coast of Africa), Botswana, Kuwait (which is in a
buildup operation with emphasis on the Middle East), Sri Lanka, Thailand,
the Philippines, the Mariana Islands and Germany, although the German site
has been decreased.
(direct and via various sources, Aug 15)
My logbook would not be complete without at least one entry per month of
the awful spurs from KVOH. Made it for August, as last heard July 2, but
much stronger this time. August 15 at 1953, very distorted FMy music on
about 17922, matching relatively clear 17775. The spur was only slightly
weaker than the fundamental, at peaks S9+15 vs S9+18. On the spur I could
see the S-meter fluxuating slightly with modulation variations. Then
looked for the match on the low side, and there it was around 17628, with
same distortion, but as usual significantly weaker than the other one,