Hi.
The extra 38 feet of length is a problem here. My yard just isn't big
enough to accommodate it. The G5RV goes right to the back fence as it
is. I guess that is just the best I'm going to be able to do with the
available space.
Shucks.
73, de Lou K2LKK.
At 02:18 PM 4/1/2008 -0400, you wrote:
>The cobra antenna is a folded dipole, they took 3 wire ribbon cable, and the
>ladder line connects to 1 wire, which goes out about 70 feet, then it's
>connected to the center wire which comes back to the center insulator, and
>is shorted to the third wire and goes back out again, and they do this for
>each side of the ladder line. Both sides are like 70 feet for a total of 140
>feet with 100 feet of ladder line included so you need to put a ballem at
>the end of that to run coax to your station, unless you want to run ladder
>line all the way in. I guess when you add up the wire, it's 3 times that 140
>feet though with it being like ribbon cable, I don't know if that changes
>anything or not with it. The original design used Romex, but being single
>strand wire, that broke too often but this design looks to me, like it's
>rather well built and very easy to make on your own. It's a lot lighter than
>the g5RV, everyone I know who has them likes them a lot. I'm looking forward
>to getting mine up.
>----- 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: 269.22.4/1355 - Release Date: 4/1/2008
>5:37 PM
Louis Kim Kline
A.R.S. K2LKK
Home e-mail: [log in to unmask]
Work e-mail: [log in to unmask]
Work Telephone: (585) 697-5740
|
