LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #1   Report Post  
Old August 1st 05, 07:49 PM
larry
 
Posts: n/a
Default need help understanding this broad band antenna

Greetings

I have been reading about this new? broadband antenna... It seems mainly
used in the short wave receiver domain but I also find newly licenced
amateur also using it...

It is a spin-off of the 'end fed' antenna but seems to have some point
blurred in the translation.....

The antenna is constructed as follows....

A random length of wire any where from 40 feet to 140 feet.. The end nearest
the house is connected to one end of the high impedance end of a 9 to1
balun.. The other end of this end of the balun is connnected to ground...

The arguement is that because the high impedance end is connected to ground
that the antenna is quieter...less noise...

The low impedance end of the balun is connected, via a length of 50 ohm
cable, to the receiver... or transceiver...

The other end of the cable is connecte to the receiver or transceiver and
needs to use an antenna coupler.....

My question.. is this a valid antenna....

Personally, I don't think so...

I beleive that because the antenna comes to the radio in 50 ohm coad but
still needs an antenna coupler the swr must be high therefore the antenna in
not valid...

Someone suggested that this design is a spin-off of an end fed dipole or
zepp ...but I disagree...I think there are a few points missing for it to
qualify as an end fed dipole or zepp...

Larry ve3fxq

anyways.. any thoughts?...


 
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
Key To Understanding Twistedhed I Am Not George CB 3 June 8th 04 04:51 PM
Understanding Shortwave Radio Listening and Antenna Design and Construction RHF Shortwave 3 February 13th 04 07:16 AM
Help Understanding Shortwave: BCcubed Shortwave 14 September 30th 03 06:13 AM
OT Helpful links for understanding twistedhed Reuben N. Fries CB 0 July 28th 03 05:18 PM


All times are GMT +1. The time now is 01:06 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