[BC] Open wire transmission lines Hi Power Medium Wave

[Mark Humphrey]

How about the "border blaster" Europe 1, which transmits on 183 kHz
with a four-tower "drive-through" inline array from the Saarland
region of Germany into France?  The TPO is 2 MW, and gain in the main
lobe (at 220 deg azimuth) is 5 dB.  I haven't been able to find a
polar plot of the pattern, but it reportedly has a very deep null
towards Berlin, to protect a co-channel station.

A picture of the open wire "coax" is about halfway down this page:
http://perso.orange.fr/tvignaud/am/e1/e1_bat.htm

More background:
http://en.wikipedia.org/wiki/Longwave_transmitter_Europe_1

Auf Deutsch, good pictures of the array:
http://members.aon.at/wabweb/radio/europe1.htm

Mark








On 12/1/06, Robert Meuser <Robertm at broadcast.net> wrote:
>
> Imagine what 2 million watts into a 3 tower in line array on 234 khz
> does.  That is Radio Luxembourg's French service Transmitter. The towers