LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #27   Report Post  
Old October 19th 03, 05:12 AM
Cecil Moore
 
Posts: n/a
Default

Tdonaly wrote:
Universally recognized principles of electromagnetics are obfuscation?


Complicating a simple measurement task beyond belief is obfuscation.

You changed the geometry. But even if you hadn't, you might be
able to say the changing electrical fields are greater at the ends of
a dipole, but not the voltages, because the voltages
aren't uniquely defined.


When a dipole is bent into an open loop, the relative voltage between
the ends is uniquely defined just like the voltage across a transmission
line is uniquely defined. If I poke two wires through two holes in a
faraday cage and ask you to measure the 10 MHz voltage between them
with 10% accuracy, would you say it can't be done?

You'll give some people the impression that things are
as simple as you say they are when things are not simple
at all.


The measurement may be extremely challenging, but the *concepts* are simple.
All you need to do is note the similarity of the transmission line impedances
on an SWR circle to a wire antenna. If the spacing on a transmission line is
an appreciable percentage of a wavelength, the transmission line will radiate.
That's all a center-fed wire antenna is - a transmission line with large
spacing between the conductors and it radiates.
--
73, Cecil http://www.qsl.net/w5dxp



-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pls comment on this dipole Steve Antenna 6 October 15th 03 12:08 AM
shortened dipole loaded Jerry Antenna 11 October 2nd 03 12:57 AM
10m dipole and tuner G. Doughty Antenna 11 September 25th 03 03:05 AM
Comet VA30 (base loaded tri-band dipole 40/15/10) PA3HHO Antenna 2 September 1st 03 07:33 PM
Dipole connected to grounded receiver? Tom Antenna 4 July 22nd 03 11:19 PM


All times are GMT +1. The time now is 02:47 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017