RE: NEC-LIST:NEC-BSC question

I'm not sure what input value you're referring to. For the SI:
command, it is dB-whatever. The output is simply scaled by the
input which allows the user to select a meaningful level (i.e.,
scale your inputs to represent dBi, or dBW or dBm/m, etc.).

The output is in radiation intensity (see pg 30 of the 4.2 manual).
It is the magnitude of the E-Field squared divided by twice the
impedance of free space (|E|^2/(2*377)).

So, 10*log(214*214/(2*377)) = 17.8 dB.

Read the Output Section starting at page 20, pg 30, and the PR
section of the manual for information of scaling this to other
values.

Rest assured you're not being dense. Most people have trouble
digesting this.
   ---Paul

-----Original Message-----
From: Richeson, Peter D [mailto:peter.d.richeson_at_boeing.com]
Sent: Wednesday, March 27, 2002 1:06 PM
To: 'NEW NEC list send'

Reading the documentation that came with Ver. 4.2 I am having a hard time
knowing for sure what the units are. It lists a switch to tell the code
that the input is in dB. dB what? dBW, dBm, etc. When using the VF
command, the output lists mag, phase and dB. again dB what. For example:
one lines lists the mag as 214 and the dB as 17 (approximately). Maybe I am
being dense but this does not make since.

Thanks.

Peter D. Richeson
Electrical Engineer/Nuclear Survivability Specialist
(405)739-1879

-- 
The NEC-List mailing list <nec-list_at_gweep.ca>
http://www.gweep.ca/mailman/listinfo.cgi/nec-list