LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #17   Report Post  
Old February 24th 13, 05:41 AM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: Feb 2013
Posts: 68
Default Homebrew 222 Mhz Beam Antenna Project


"tom" wrote in message
. ..

snip

One thing to remember is you generally do not want elements that are
electrically connected to the boom. The connection is usually not very
good and eventually corrodes. This makes the antenna detune in an
unpredictable manner.

That said, you can weld elements to the boom, which works.

You are better off using insulated elements with inserts in the boom holes
such as Delrin.

This will change the correction factor, but that is a known.

tom
K0TAR


At the moment, my driven element is 664 mm of half-inch copper pipe, my
favorite medium for VHF/UHF antennas. I made some antennas for the RACES
station at the local firehouse about fifteen years ago and they're still up
there.

If I were to continue in that vein, I could weld (torch solder, really) the
elements to a longer piece of copper pipe.

I have seen the "known" correction factors referenced in vague terms, but
nothing that I ever got my arms around. Where should I be looking?

"Sal"
(KD6VKW)


 
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
My latest homebrew project.... Kenneth Scharf Homebrew 6 April 24th 11 01:04 PM
Wanted: Homebrew or Vintage HF Linear Project KG6BAJ - Wm Lewis Swap 0 September 24th 09 08:59 PM
Homebrew RX restoration project Ron in Radio Heaven[_4_] Boatanchors 1 July 8th 08 11:44 AM
6 Meter Homebrew Project [email protected] Homebrew 7 March 1st 05 01:45 AM
Help an old Ten-Tec tranceiver argonaut II in a homebrew transverter project Peter PE1CUO Homebrew 0 December 5th 03 08:29 PM


All times are GMT +1. The time now is 05:15 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