Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #21   Report Post  
Old September 24th 08, 04:14 PM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: Apr 2008
Posts: 543
Default Carolina Windom revisited: 4 to 1 balun does nothing to choke RF ?


I also liked my Inverted L made out of a homebrew 9' bug catcher mobile
antenna with 25' horizontal clip on extension for 40/80 and clip on

shunt
caps at the mobile mount. Works well in the campground.

Keeping the antenna matched to the coax DOES make a difference,

considering
coax losses.


A "one size fits all" antenna is still VERY MUCH a pipe dream ... in my
humble opinion (or, IMHO ...)

Regards,
JS


Then there are the discones and LPDAs where size matters.

The bug catcher worked well and still does despite many repairs, 15-40 m by
itself. 40 and 80 with the extension. It's a modified hamstick with 4"
dia. by 8" hand wound #14 coil in the center with scrap plastic forms.
There must be an unwritten law that says only the ugliest projects will
work. It was a pipe dream of flea clips, but the goal was to do all
matching on the antenna.

I used it mobile with a 365 pf broadcast variable on the mount and a remote
operator into the cab. Add a little series XsubL with a flea clip, matched
out with the cap to raise the impedance at the mount. The coil would self
resonate so 12 and 17 wouldn't work (perhaps a longer stepped pitch later).
Shorting around the coil got me 10m back. I would tune for min SWR
(actually ALC) and the difference between not heard with an OK SWR and heard
well after a fine tuning was repeatable over and over. Even with as little
as 15' of RG8x. Worked a lot of DX on the commute back and forth to
school. Had no time to do it any where else.


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
Carolina Windom using 300 ohm ladderline john Wiener Antenna 10 September 11th 08 04:02 PM
Results: Carolina Windom Rick (W-A-one-R-K-T) Antenna 4 September 7th 07 09:38 PM
Ferrite cores instead of a 1:1 current-choke UnUn for a Carolina Windom Rick (W-A-one-R-K-T) Antenna 9 September 1st 07 03:09 AM
FA: Carolina Windom 160M Larry Wilson Swap 0 June 10th 05 09:31 PM
Carolina Windom jimbo Antenna 9 March 16th 05 02:38 PM


All times are GMT +1. The time now is 09:29 AM.

Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017