View Single Post
  #18   Report Post  
Old September 18th 04, 10:51 AM
Thierry
 
Posts: n/a
Default


"dmr" wrote in message
...
I have used 160M Carolina windoms for the past 5 years or so and have
found them to be really good performers. The higher you can get the
vertical element off the ground the better (I have had good results
with it only 20' off the gorund....Radioworks recommends more). I have
never modeled it, nor had experience with G5RV, but compared to a half
wave dipole at similar height, my "impression" is that it performs at
least as well, probably better, plus multiband. Beward you will need
to use a tuner with it, and if you are running legal limit, be careful
of your SWR's as you can burn out the balun or RF choke (they are not
traps).


Hi,

160m long 20' high ? That must be interesting and u had to confirm over 100
dx with such a length...
I very well know these problems of SWR etc,and many others. I am an OT you
know,... Hi! I learnt the lesson in the past in experimenting live a bad
SWR... youth errors as one tells... but interesting because I never more
forget the lesson, like many others in experimenting myself.
With some respect it it far better to be chocke a second and get a little
blister due to a SWR over 5:1 using a kW amp that having hours of theory...
because you cannot fix your idea on concrete things.

For the rest, of course the heigth (and length) are VERY important, all
using a dipole or windom all work fine or almost from 8m high and 20m long
and up. Below your radiation pattern is seriously affected compared to the
ideal solution (say 2-lamba over 12m high). And you feel that very well when
trying to call CQ DX and even simple CQ up to 5000 km away.
To get an idea simulate these specs in modeling software like multiprop that
use a VOACAP engine, or even nec, hfant and others.

See my best site for detail.
Thanks for the help.

73
Thierry, ON4SKY

There has been a lot of debate about this antenna, but I can
tell you the 160M version works quite well on all bandsl.
GL es 73
Dan (k0dan)

On Fri, 17 Sep 2004 15:35:28 +0200, "Thierry"
http://www.astrosurf.com/lombry wrote:


"Cecil Moore" wrote in message
...
Walter Maxwell wrote:
If I may put in my two-cents worth, a dipole is a dipole. The G5RV is

a
dipole
and the Caroling Windom is a dipole.

Hi Walt, I don't know if you know or not, but the Carolina Windom
is designed for the vertical section to radiate so it has a
radiation pattern which is a combination of a dipole and a vertical.



Indeed, all the interest of the thing..., hence my question.
But I wonder also about the QRM pick-up along this vertical segment...
I will have the answer in two weeks.

Thierry, ON4SKY

--
73, Cecil, W5DXP


-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----