There are a handful of 2,000,000-watt stations in the Middle East and I
believe at least one in Europe. I know of nothing more powerful.

My outdated edition of the World Radio/TV Handbook lists Longwave
stations in Sweden (171 kHz) and Russia (261 kHz) that claimed to be
2,500,000 watts, as well as a number of 2,000,000-watt Longwave
stations in the Middle East, Asia, and Europe.

Also, near St. Petersburg, Russia, there's a station on 1494 kHz that
transmits 1,200,000 watts (with a transmitter capable of 2 MW) through
a *26-tower* directional array with a gain of 25 dB, aimed at
Scandinavia. The array is more than 1-1/2 miles from end to end.

BTW, right in my town, there's a 5,000,000-watt UHF TV station, but
that's the ERP due to antenna gain, not actual transmitter power.

WBRW wrote:

BTW, right in my town, there's a 5,000,000-watt UHF TV station, but
that's the ERP due to antenna gain, not actual transmitter power.

Which station is that?

BTW, right in my town, there's a 5,000,000-watt
UHF TV station, but that's the ERP due to antenna
gain, not actual transmitter power.


5 MW UHFs are pretty common, really.

Here's a real challenge: list the top ten (or top five) highest gain AM
stations.

That is, those with the highest maximum-to-RMS field ratio, regardless of
power.

The power ratio, hence the gain, is the square of the field ratio.

Hint: start looking at stations with eight or more towers.

Second hint: look for arrays with major axes of 180 or somewhat more degrees
and with minor axes of 90 degrees, more or less (210, or so, degrees and 80, or
so, degrees, respectively, are among the prime candidates).

In article , inch (Peter
H.) wrote:

Here's a real challenge: list the top ten (or top five) highest gain AM
stations.

That is, those with the highest maximum-to-RMS field ratio, regardless of
power.

The power ratio, hence the gain, is the square of the field ratio.

Hint: start looking at stations with eight or more towers.

Second hint: look for arrays with major axes of 180 or somewhat more degrees
and with minor axes of 90 degrees, more or less (210, or so, degrees and 80,
or so, degrees, respectively, are among the prime candidates).


Are you going to post the answer later?

I think I did part of this exercise once before, listing all the stations
with 8 or more towers, and I seem to remember that the list was not all
that long. I only checked the "field ratio" on a couple though, so don't
have any idea which are the "winners".


Regards,

John Byrns


Surf my web pages at, http://users.rcn.com/jbyrns/

Are you going to post the answer later?

I think I did part of this exercise once before, listing all the stations with
8 or more towers, and I seem to remember that the list was not all that long.
I only checked the "field ratio" on a couple though, so don't have any idea
which are the "winners".


1190 in Dallas is the winner (6 by 2); 1070 in Houston is a close second (3 by
3).

There are numerous 9- or 10-tower Canadians which are contendors.

You've got to get beyond 180 degrees, major axis, in order to make the
"aperture" small enough, then you just add additional instances of those tower
pairs until you get the gain way high ... certainly higher than 12.

Second challenge: name the top ten (or top five) stations with the most steel
in the air.

The winner is ... 1070 in Houston, again.