NEC-LIST:FW: NEC-BSC question

Forwarding for a co-worker who is not on the list yet.

> -----Original Message-----
> From: Brown-ii, Fred B
> Sent: Wednesday, April 24, 2002 12:57 PM
> To: Richeson, Peter D
> Subject: NEC-BSC question
>
> I have a question for any NEC-BSC experts out there:
>
> I am defining a source and receiver with the SI and RI commands. To get
> the coupling, I set PR to option 3 and then use the PN command (in
> rectangular coordinates). Is the PN origin set with respect to the
> receiver location? Workbench shows that the PN scan is with respect to the
> model origin, but that doesn't appear to be the case. If I use PN with the
> origin at (0,0,0) and scan one point at (0,0,0), it doesn't matter where
> my source and receiver are as long as their separation and orientation
> remains constant. . What I want to do is use PN to get the field at one
> point (the receiver location).
>
> Also, I would like to compare my results with the free space loss equation
> as a function of either distance or frequency:
> Loss= 37 + 20Log_10 (freq in MHz) + 20 Log_10 (distance in miles).
> My results show identical curves except for an offset (and a minus sign,
> which is irrelevant). I'm trying to determine a physical reason for the
> offset.
>
> I'm using version 4.2.
>
> Fred B. Brown, II
> 405-739-1915
> Nuclear Survivability/Vulnerability Engineer/Scientist
> Boeing Aerospace Operations
>

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