interesting stuff.
Seems like it would be less efficient and bigger then a trapped dipole for
the same bands?
I guess the idea behind the cobra senior is to have a 160 antenna that will
also work on other bands?
It would seem to me also that if one had 140 feet to put up a dipole at any
height for it to work properly on 160 and 80, you could very easily put up
mono band dipoles for 80, 40 and something loaded for 160.
Personally if i had that much space I would go for mono band dipoles or
inverted V's, even if i had to put them close together.
73
Colin, V A6BKX
----- Original Message -----
From: "Steve Forst" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, April 01, 2008 2:06 PM
Subject: Re: Cobra antennas (was Re: Amplifiers)
> Colin,
>
> If you are prepared to have your head spin, here is more than you ever
> wanted to know about the theory of the Cobra Ultralite:
>
> http://www.eham.net/forums/Towertalk/6307
>
> 73, Steve KW3A
> ----- Original Message -----
> From: "Colin McDonald" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, April 01, 2008 1:43 PM
> Subject: Re: Cobra antennas (was Re: Amplifiers)
>
>
> > what is the difference between the g5RV and the cobra antennas?
> > I know how a g5RV is designed, but how is the cobra designed?
> > 73
> > Colin, V A6BKX
> > ----- Original Message -----
> > From: "Steve Dresser" <[log in to unmask]>
> > To: <[log in to unmask]>
> > Sent: Tuesday, April 01, 2008 11:04 AM
> > Subject: Cobra antennas (was Re: Amplifiers)
> >
> >
> >>
> >> Howard,
> >>
> >> I've been using the Cobra Ultralite Senior for almost three years, and
> > like
> >> it very much. Mine plays very well on 80 and 40, and somewhat well on
20
> >> and 17. I've tried it on 10, and I know it works, but don't really
know
> > how
> >> well as I haven't seen much 10-meter activity here in New England. On
> >> 80,
> >> where it seems to work best, people give me the same S-meter readings
as
> >> I
> >> give them, which I realize isn't necessarily a good indication of how
> > things
> >> are working. On some of the other bands, I tend to hear better than
> > people
> >> hear me, which makes me suspect that maybe the antenna isn't working as
> > well
> >> as it should.
> >>
> >> It's an easy antenna to put up, and I have mine strung between two
trees,
> >> about 20 feet off the ground. It might work better if I could raise
the
> >> center up another 30 feet or so, but I haven't figured out a good way
to
> >> support the center. Raising the center might also make it play better
on
> >> the higher frequencies, but I won't know unless and until I try it.
I'm
> >> quite sure I could do better with a beam on a tower, but I have to say
> > that
> >> this antenna does quite well for a one-size-fits-all antenna.
> > Incidentally,
> >> I haven't had to repair it even though we get some 50MPH winds during
the
> >> winter.
> >>
> >> Steve
> >>
> >> ----- Original Message -----
> >> From: "Howard Kaufman" <[log in to unmask]>
> >> To: <[log in to unmask]>
> >> Sent: Monday, March 31, 2008 18:30
> >> Subject: Re: Amplifiers
> >>
> >>
> >> > John I am very interested in the cobra, what do you think of yours?
> >> > I'd like to use it on 160 through 10.
> >> >
> >> >
> >> >
> >> >
> >>
> >>
> >>
> >> --
> >> No virus found in this incoming message.
> >> Checked by AVG.
> >> Version: 7.5.519 / Virus Database: 269.22.3/1354 - Release Date:
4/1/2008
> > 5:38 AM
> >>
> >>
> >
> >
> >
>
>
>
> --
> No virus found in this incoming message.
> Checked by AVG.
> Version: 7.5.519 / Virus Database: 269.22.3/1354 - Release Date: 4/1/2008
5:38 AM
>
>
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