On 11/9/19 10:50 PM, K9MA wrote:
Gee, I remember the days when you had to take a stack of cards to the
computing center, and come back the next day to find out you made a typo
in card 134.
Joking aside, I think it would be great if one could have access to NEC4
that way. I understand it can actually model buried radials, and may
cope better with closely spaced wires.
It does model buried wires, and wires that cross the boundary between
above and below ground.
And it does much better with closely spaced wires, wires at angles, and
wires with very short segments (relative to wavelength)
Basically, all the complaints about what NEC2 (which is vintage 1980)
doesn't do well were fixed in NEC3 and NEC4.1 (which is vintage 1992)
and NEC4.2, which is vintage 2011 (the better ground model GN3 is from 2011)
Ground Model info here:
LLNL-TR-490316
https://digital.library.unt.edu/ark:/67531/metadc868579/
73,
Scott K9MA
On 11/9/2019 19:52, jimlux wrote:
On 11/9/19 4:57 PM, James Ying wrote:
It’s a great idea for folks like me who don’t have a NEC4 license!
It’s not very hard to implement, just use a queue (such as RabbitMQ,
Active MQ or AWS SQS) to accept and distribute jobs, and use a web
page to upload files and send jobs to the queue, the server listens
on the queue, and do the computation, send an email to the user or
let the user fetch the results with an ID obtained when submitting
the file. At work, I have wrote a few these applications for cancer
researchers. The only issue is the NEC4 license, does it allow these
kind of “sharing”?
That is, in fact, the important question - I'll have to seek some
legal assistance.
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