Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Old October 29th 03, 05:57 PM
BuckEye
 
Posts: n/a
Default

Your lost as bad as last years Easter egg.

Go back to school.
Wherever you have gotten the antenna info apply it . Learn something, don't
just try to quote out of a book, any one can do that. Your very confused.
I need to get back to some serious work designing antennas.








"lancer" wrote in message
...
On Wed, 29 Oct 2003 04:42:45 GMT, "BuckEye" wrote:


"Lancer" wrote in message
The number (.91 to .99) are correct for the difference between an
antenna in free space and erected near earth. Its not from the
velocity factor of the antenna.
Its because the antenna is close to the earth and other
conductive objects (tree, buildings and power lines) which present
stray capacitance that tunes the antenna lower in frequency than a
free space antenna. Its called "end effect" and is more prevelant
the closer an antenna is other objects.


If so how do you explain in some long wire antennas its even 1.05 times
longer than the freespace.



I guess you need to tell me what longwire antenna you are referring
to. The end effects only operate on the end sections of the antenna,
in the parts on the antenna the effects are absent, and the wire
length is approximately that of an equivalent length in free space.



  #2   Report Post  
Old October 29th 03, 06:12 PM
Robert
 
Posts: n/a
Default

On Wed, 29 Oct 2003 17:57:32 GMT, "BuckEye" wrote:

Your lost as bad as last years Easter egg.

Go back to school.
Wherever you have gotten the antenna info apply it . Learn something, don't
just try to quote out of a book, any one can do that. Your very confused.
I need to get back to some serious work designing antennas.




Ok, have fun.
  #3   Report Post  
Old October 31st 03, 12:28 AM
'Doc
 
Posts: n/a
Default



BuckEye wrote:

Your lost as bad as last years Easter egg.

Go back to school.
Wherever you have gotten the antenna info apply it . Learn something, don't
just try to quote out of a book, any one can do that. Your very confused.
I need to get back to some serious work designing antennas.


Instead of doing serious, or not-so-serious antenna design,
you
might take a look at some of those books you imply we shouldn't
quote from, and apply what you've read. And you're wrong, not
every
one can do that, much less understand what they read (got a
mirror?).
There are some things that you can 'infer' from what you've
read, not
everything has to be spelled out in black and white. That
process is
the one you refer to as thinking... Have fun designing
antennas, I do.
'Doc

PS - Around here they say, "Don't know whether he's washing or
hanging
out.".
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
Doppler DF whip length Ken Antenna 3 February 25th 04 10:21 PM
Ohio/Penn DX Bulletin #649 Tedd Mirgliotta Dx 0 February 22nd 04 09:15 PM
Ohio/Penn DX Bulletin #649 Tedd Mirgliotta Dx 0 February 22nd 04 09:15 PM
Effect of whip diameter on resonant frequency Ron Antenna 0 September 12th 03 01:21 AM
Hygain 18AVT/WB Parts Traps, 80m coil whip etc. Alan Caplan Antenna 0 August 9th 03 08:00 PM


All times are GMT +1. The time now is 05:34 AM.

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