From URL:

http://www.haarp.alaska.edu/haarp/haarpFactSheet.html

Since the sun's radiation creates and maintains the ionosphere, sudden
variations in this radiation such as those caused by solar flares can affect
the performance of radio systems. Sometimes these natural changes are
sufficient to induce large transient currents in electric power transmission
grids, causing widespread power outages. Lightning is known to cause
substantial heating and ionization density enhancement in the lower
ionosphere, and there are indications that ground-based HF transmitters,
including radars and strong radio stations, also modify the ionosphere and
influence the performance of systems whose radio paths traverse the modified
region. Perhaps the most famous example of the latter is the "Luxembourg"
effect, first observed in 1933. In this case a weak Swiss radio station
appeared to be modulated with signals from the powerful Luxembourg station,
which was transmitting at a completely different frequency. Music from the
Luxembourg station was picked up at the frequency of the Swiss station.


--
The Anon Keyboard
I doubt, therefore I might be



"dxAce" wrote in message
...


Richard wrote:

Yes LDE's were previously called the "Luxembourg effect" and were first
noted in the 1930s!!!

The 'Luxembourg effect' has nothing whatsoever to do with LDE's.

dxAce
Michigan
USA



Rgds
Richard, SO5GB

"Michael" wrote in message
. net...
Quick question here...

I've read about LDE a number of times and have even heard Art Bell talk
about it on Coast To Coast.

I've been thinking that it might be a product of the electronic
equipment
itself, rather then any kind of outlandish atmospheric/propagation
condition.

My question... Has LDE ever been noticed or logged prior to the days of
solid state and computer chip rigs ??? I'd love to know the first
known
observations of this phenomenon.

Any help on this question would be enormously appreciated.
--
Respectfully,

Michael

Location: New Jersey
Primary Receiver: R-75 with full Kiwa mods
Antennas: G5RV, 200ft "Frankenstein" roof wire
Additional Radios: 7600GR,KA-1101,KA-1102
PL-550, KA-989, Info-Mate 837, GE-SR III
Westinghouse H-104 (seven tube)
Web Site: http://md_dxing.tripod.com