[BC] Total Power Of An AM Directional Array

[Cowboy]

On Wednesday 04 April 2007 03:16 pm, Tom wrote:
> In an AM multiple tower directional array, does the power of 
> all towers as determined by "P equals I squared times R" add 
> up to the authorized power of the station?

 Yes, and no.  ;-)

> For example, for a one thousand watt station with four towers 
> would the power of each tower add up to one thousand watts?

 If you take into account the direction *and* phase of the flow, yes,
 instantaneously, minus system losses.

 By that, if you take the true power in the polar domain of all positive
 towers, and subtract the true polar power of any negative towers,
 the total will be slightly less than the applied power due to system
 losses.
 Power factor here, has much the same meaning, but in a different light.

 Can you simply take the I^R power at each tower and
 algebraicly add them up ?
 Absolutely not !

 Maybe this will help a tad further.....
 Can you take the ignition power at each spark plug in a multi-cylinder
 engine and add them up to get the total power of the ignition system ?
 Yes, at an instant in time, when one has power and all the rest are zero,
 but not by simply adding the separate measured values.
 Time is a factor.

-- 
Cowboy