LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #10   Report Post  
Old April 16th 04, 04:26 AM
Cecil Moore
 
Posts: n/a
Default

J. McLaughlin wrote:
After investigating a large set of traveling wave antennas (not
Beverage) I think that the smallest amount of power dissipated in the
terminating resistance was about 2 db. Mind, these were antennas with
useful lengths and angles. It is likely that a rhombic with very long
leg lengths would dissipate even less in its termination resistance.


Well, remember the posting that kicked off this discussion was about
the following very short traveling-wave antenna:

"It is a military inverted-V, 110 ft. long total, with each end
terminated in a 150 ohm resistor driven into the ground, center fed
through a 9:1 balun."

A 110 ft. center-fed inverted-V is certainly going to have extensive
losses in the resistors on most HF bands. After all, it is less than
1/2WL long on 75m and only 3 wavelengths long on 10m.
--
73, Cecil, 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
Inverted ground plane antenna: compared with normal GP and low dipole. Serge Stroobandt, ON4BAA Antenna 8 February 24th 11 10:22 PM
Mobile Ant L match ? Henry Kolesnik Antenna 14 January 20th 04 04:08 AM
Poor quality low + High TV channels? How much dB in Preamp? lbbs Antenna 16 December 13th 03 03:01 PM
QST Article: An Easy to Build, Dual-Band Collinear Antenna Serge Stroobandt, ON4BAA Antenna 12 October 16th 03 07:44 PM


All times are GMT +1. The time now is 05:26 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