Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Old April 28th 04, 05:42 PM
Gary V. Deutschmann, Sr.
 
Posts: n/a
Default

Hi Bill

The monster cable I had was ultra fine stranded to about size #8
copper, very thick.
It was only 8 years that it was up before I moved, and in that time it
did not get brittle although it did change from clear to amber over
that timespan.
I was able to roll it up and bring it with me and saw no signs of
cracking. But even if the insulation came off completely, it wouldn't
affect it as far as ladder line goes. I was even thinking of
stripping the insulation before using it for ladder line, but it was
somehow molded onto the wire braid which would make stripping it quite
hard. So I used it as is.

FWIW: My son who is a Hi Fi buff, is now using something similar in
appearance to our RG8U but in a twin housing, like some twin Cable TV
cable. I have no idea of the impedance or actually what it is he is
using. But he seems to like it better than the Monster Cable.

TTUL
Gary

  #2   Report Post  
Old April 27th 04, 12:36 AM
'Doc
 
Posts: n/a
Default

Bill,
I used a loop fed with ladder line through a tuner for
years. Worked pretty well on all bands but 15 meters. It
wasn't the highest thing at all, but did fine for my uses.
I placed a board in a window to feed the ladder line through.
Drilled a couple of holes, fed a couple of short sections of
wire through them, sealed them with 'hot glue' and had no
particular problems for years (no water leaking in, etc.).
I couldn't tell you the exact length of the feed line, I never
knew, and since there were no problems, I really didn't much
care how long it was. My tuner has a balun in it (suspect a
4:1?) and handled the impedances well even at full legal
limits.
My loop came down in an ice storm a couple of years ago
and as soon as I get over my 'bout' of lazy, I'll put it
back up. I didn't have any unusual FRI problems (the neighbors
did, but that's a different story, and one that was solved).
The phone and computer are only a couple of feet from the
entrance point of the ladder line and radio/amplifier. Curing
telephone and computer RFI isn't what you asked about so I
won't go into it (mine's solved anyway).
Have fun...
'Doc


zeno wrote:

Seems like everyone I talk to about using ladder line to my
proposed 540' horizontal skywire loop does a double take when
I say I want to use ladder line into the shack. I was curious
if there are any fans of ladderline feed systems who can
relate positive experiences, or am I about to really court
disaster here.

The ARRL antenna book says that coax to this type of antenna
is not as "multiband" friendly as was once fantasized....they
recommend ladder line.

Anyone actually have such a loop? What is your experience?

Bill, K6TAJ

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
Supporting theory that Antennas "Match" to 377 Ohms (Free space) Dr. Slick Antenna 183 October 2nd 20 10:44 AM
Reflection Delay is it real??? Peter O. Brackett Antenna 7 September 20th 03 11:55 AM
50 Ohms "Real Resistive" impedance a Misnomer? Dr. Slick Antenna 255 July 29th 03 11:24 PM


All times are GMT +1. The time now is 11:27 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