[DX] ARRL BPL Video

Sat, 9 Aug 2003 10:49:34 EDT

In a message dated 8/9/03 8:49:12 AM Eastern Daylight Time, 
[email protected] writes:

> Well, the power to my house is 40 feet from my antenna and only 15 below 
> the plane of the antenna. So, near field is the conclusion.
> 
> Dave
> 
> 

I don't follow. Why is it near field? Why is 15 feet the appropriate 
distance? How unidirectional is your antenna? What is the power pattern of your 
antenna in the near and far filed? What is your assumed model for crosstalk/cross 
mod, etc? 

What modulation scheme are you assuming for BPL, that doesn't allow for 
rejection of a fairly monochromatic signal, such as SSB; CW; and so on?

73,
Chip N1IR

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