LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #11   Report Post  
Old April 11th 06, 08:39 PM posted to rec.radio.amateur.antenna
Richard Harrison
 
Posts: n/a
Default Current across the antenna loading coil - from scratch

Gene, W4SZ wroyte:
"However, the physical entities do not have two values at once in the
same time and place."

All that is needed to prove energy in the incident and reflected waves
each has its own values is to separate the two with a directional
coupler as the Bird Thruline wattmeter does. It gives you forward and
reverse powers at the same place anywhere you choose along a
transmission line. The standard device is calibrated for 50-ohm lines so
it is easy to convert the power indicationsw to volts and amps if
desired.

Take what Tom, W8JI wrote today:
"I take it you are saying you think current can flow in two directions
at the same instant of time in a conductor, can be "lost" from a single
conductor through radiation and resistance without a shunting impedance,
conservation of chrge isn`t important and Maxwell`s equations are
wrong."

Of course, except for Maxwell!

Maxwell`s equations work.

Current can flow in opposite directions past a point.

Shunting impedance makes a voltage divider with series impedance, but
that`s not the only way to get a difference between points on a
conductor or a coil.

Conservation of charge isn`t an issue with r-f current in a wire or
coil.

Tom`s posting is nonsense.

Best regards, Richard Harrison, KB5WZI

 
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
Imax ground plane question Vinnie S. CB 151 April 15th 05 05:21 AM
Questions -?- Considering a 'small' Shortwave Listener's (SWLs) Antenna RHF Shortwave 1 January 24th 05 09:37 PM
FS: sma-to-bnc custom fit rubber covered antenna adapter Stephen G. Gulyas Scanner 17 December 7th 04 06:42 PM
FS: sma-to-bnc custom fit rubber covered antenna adapter Stephen G. Gulyas Swap 17 December 7th 04 06:42 PM
Current in loading coil, EZNEC - helix Yuri Blanarovich Antenna 334 November 9th 04 05:45 PM


All times are GMT +1. The time now is 07:23 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