Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Old May 17th 07, 08:54 PM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: Mar 2007
Posts: 3,521
Default Phase Shift through a 75m Texas Bugcatcher Coil

Jim Kelley wrote:
Cecil Moore wrote:

What is the benefit
of using a lot of frequencies when you could use
the frequency of interest?


Your memory is growing short. Do you not remember challenging me to do
that very thing - claiming it was impossible? I said I would use
pulses, then you said it wouldn't work, bla bla bla. Circuitious, isn't
it.


No, I'm still saying the same thing. What is the benefit
of using a lot of frequencies when you could use the
frequency of interest?

If you are asserting
that attaching a load resistor to a loading coil dramatically
changes the characteristics, the onus of proof is upon
you.


It should be readily apparent to just about anyone that one does in fact
significantly alter the characteristics of a system by changing it from
one which has a reflection at the end to one which doesn't.


So I guess it is up to you to prove that the system is
somehow non-linear in one direction only. Good luck on
that one.

A non-terminated Rhombic has both forward and reflected
currents. A terminated Rhombic has only forward current.
Exactly how is the physics of the Rhombic changed by
adding a termination resistor?
--
73, Cecil, w5dxp.com
  #2   Report Post  
Old May 17th 07, 09:58 PM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: Jul 2006
Posts: 666
Default Phase Shift through a 75m Texas Bugcatcher Coil

Cecil Moore wrote:
A non-terminated Rhombic has both forward and reflected
currents. A terminated Rhombic has only forward current.
Exactly how is the physics of the Rhombic changed by
adding a termination resistor?


The same physics applies to all antennas, Cecil. Would you assert
that fact gives all antennas the same characteristics?

But here's the point. Your claim is that the coil as you have modeled
it, performs the same in EZNEC as it does when it is employed as part
of a 75 meter Bugcatcher antenna. At the same time you want to claim
that there's no other way to do such testing.

It's not a reasonable viewpoint, Cecil. But you're entitled to it and
I'm happy if you want to go on having it. :-)

73, Jim AC6XG

  #3   Report Post  
Old May 17th 07, 10:04 PM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: Mar 2007
Posts: 3,521
Default Phase Shift through a 75m Texas Bugcatcher Coil

Jim Kelley wrote:
But here's the point. Your claim is that the coil as you have modeled
it, performs the same in EZNEC as it does when it is employed as part of
a 75 meter Bugcatcher antenna. At the same time you want to claim that
there's no other way to do such testing.


No, you missed the point. If there is any other way
to do such testing, please present it. Valid testing
methods are what we are lacking.
--
73, Cecil http://www.w5dxp.com
Reply
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
Phase shift through... K7ITM Antenna 7 April 6th 06 02:26 AM
FS:Texas Bugcatcher Available MailfrmPA Antenna 0 June 6th 04 09:05 PM
WTD: WB5TYD Texas Bugcatcher Trailer Hitch Mount Michael Crestohl Swap 0 December 2nd 03 12:50 AM
WTD: WB5TYD Texas Bugcatcher Trailer Hitch Mount Michael Crestohl Swap 0 November 18th 03 01:59 PM
WTD: WB5TYD Texas Bugcatcher Trailer Hitch Mount Michael Crestohl Swap 0 October 30th 03 04:18 PM


All times are GMT +1. The time now is 07:09 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