[BC] Open wire transmission lines Hi Power Medium Wave

[Robert Meuser]

Interesting site.   Radio Luxembourg does not use the open wire feeders 
at either of their LW sites. Also, it would appear that europe 1 has not 
upgraded to solid state TXs.

R

Kent Winrich wrote:

> According to the web site, here is the power distribution for the towers:
>
> The antennas consist of 4 metal pylons. The distances between centres 
> is 350
> Mr. the heights: 270, 276, 280 and 282 Mr.
> The pylons are of triangular section of 3 side m.
> The distribution of the powers are 2%, 56%, 41%, 1% for a diagram of
> radiation of 220? (south-western) with a profit of 3 and one weakening of
> the minima postpone higher than 1/1000.  The feedline impedanec is 120 
> ohms
>
>
> http://translate.google.com/translate?u=http%3A%2F%2Fperso.wanadoo.fr%2Ftvignaud%2Fam%2Fe1%2Ffr-e1.htm+&langpair=fr%7Cen&hl=en&ie=UTF-8&oe=UTF-8&prev=%2Flanguage_tools 
>
>
>
>
> On 12/1/06, Mark Humphrey <mark3xy at gmail.com> wrote:
>
>>
>> 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
>