Hi John.
Well, mine isn't built from a commercial package. We used the same
dimensions, but the original G5RV antenna that I had succumbed to a direct
lightning strike. This one is made from copperweld, I'm not sure who made
the 450 ohm line, but the coax is Belden. The connections were well enough
sealed that when we installed the balun today, all of the connections were
still nice and shiny. Getting an antenna to survive a Rochester winter is
a pretty good test--I think that this one will hang in there, but I could
wish for a bit better performance. Wish I could get more height, but this
was the best height that I could manage with the trees and mounting
hardware available.
It is a fact that a G5RV delivers much better performance if you can get it
50 or more ft. in the air. I've used one at that height during Field Day,
and I wish that my antenna would play like that because I was working stuff
right and left at Field Day, ant the Icom AT180 auto tuner liked it better
too.
73, de Lou K2LKK
At 11:54 PM 5/19/2007 -0400, you wrote:
>Sounds like the only real difference in yours and mien is the fence though 1
>leg of mine does go right over my pool. If you could get a little more
>height out of it it might work better or maybe even put up a vertical or
>something. I guess in some people's yards they just don't play as well as
>others, in mine, it really plays great though if it breaks again, I'm
>thinking about trying that new Cobra antenna, only available through HRO.
>I'm hearing a lot of good things about that one, it's a little pricy and a
>little longer at 140 feet instead of the 102 or what ever mine is now, but
>I'm thinking since I couldn't fix my G5RV as well as I'd have liked when I
>did fix it a couple weeks ago, I'll see about getting 1 of those some time
>this summer for standby. For some reason, solder just won't stick well to a
>G5RV. We did the best we could with mine though, solder, tie raps, a little
>tape, it's ugly but has held for a couple weeks so far and hopefully will
>last the summer.
>----- Original Message -----
>From: "Lou Kline" <[log in to unmask]>
>To: <[log in to unmask]>
>Sent: Saturday, May 19, 2007 11:45 PM
>Subject: Re: Tuning Ham sticks
>
>
> > Hi.
> >
> > Mine is strung across my back yard, up about 25 ft. With the lack of
> > available supports, that was the best I could do. I had to put about a 20
> > degree bend in the one leg to get it to fit into my yard, and
> > unfortunately
> > there is a chain link fence around my back yard that may be complicating
> > things a lot. I use 450 ohm ladder line for the balanced portion of the
> > feed, with a 1:1 balun and then RG8X going back to the radio. I used a
> > dummy load to verify that there is no problem with the coax, and all
> > connections are clean and good. I only have a 90 x 62 ft. area to work
> > in,
> > and am beginning to think that there is no way to put an efficient HF
> > multiband antenna system in an area that small.
> >
> > 73, de Lou K2LKK
> >
> >
> >
> >
> >
> > At 11:07 PM 5/19/2007 -0400, you wrote:
> >>How is your G5RV set up? Mine plays best on 40, second best on 75 and
> >>20's
> >>right there too. It's a little low in the band where it's best after we
> >>fixed it, but still plays great. I had to reattach the feedline a few
> >>weeks
> >>ago so we ended up taking about 4 inches off the ladder line portion. The
> >>SWR is a little lower in frequency on the bands than it was but funny
> >>thing
> >>is, I think the antenna's working a lot better now than it used to.
> >>----- Original Message -----
> >>From: "Lou Kline" <[log in to unmask]>
> >>To: <[log in to unmask]>
> >>Sent: Saturday, May 19, 2007 10:50 PM
> >>Subject: Re: Tuning Ham sticks
> >>
> >>
> >> > Hi.
> >> >
> >> > Has anyone tried two of these as a dipole on 75 meters, and if so, how
> >> > did
> >> > you make out? I find that a G5RV really plays badly on 75 meters in
> >> > this
> >> > location, and when a friend swept it with an antenna analyzer, it is
> >> > apparent why. On 3.925 MHz where our section net for NTS meets, the
> >> > impedance without an antenna tuner is just 4 ohms! It is much
> >> > healthier
> >> > down around 3.500 MHz. It speaks volumes about the MFJ auto tuner
> >> > because
> >> > it will even transform a load like that, but it actually brings the SWR
> >> > at
> >> > the radio down to 1.4 to 1, but the efficiency is terrible! Since I
> >> > use
> >> > 75
> >> > so much, I'm looking for a better multi-band antenna and plan to scrap
> >> > the
> >> > G5RV as soon as I can find something suitable that will fit in my yard.
> >> >
> >> > I've been tempted to look at the ham stick idea as a way to get a quick
> >> > and
> >> > dirty antenna playing on one spot frequency on the band, knowing full
> >> > well
> >> > that the bandwidth will be really tight down there.
> >> >
> >> > 73, de Lou K2LKK
> >> >
> >> > At 07:04 AM 5/19/2007 -0700, you wrote:
> >> >>Hi Butch,
> >> >>
> >> >>I am tuning them individually and plan to combine them later as a
> >> >>dipole.
> >> >>
> >> >>God bless,
> >> >>Mark
> >> >>God loves you!
> >> >>My ham radio lists.
> >> >>http://lists.topica.com/lists/funhamradio.
> >> >>http://groups.google.com/group/funhamradio-list
> >> >>My personal website
> >> >>http://funhamradio.bloki.com
> >> >>----- Original Message -----
> >> >>From: "Butch Bussen" <[log in to unmask]>
> >> >>To: <[log in to unmask]>
> >> >>Sent: Saturday, May 19, 2007 6:46 AM
> >> >>Subject: Re: Tuning Ham sticks
> >> >>
> >> >>
> >> >> > If you have them set up as a dipole, you want to tune both ends the
> >> >> > same.
> >> >> > If you tune one and not the other, you're efectively changing the
> >> >> > feed
> >> >> > point. Remember, even though we feed them with coax, dipoles are a
> >> >> > ballanced antenna.
> >> >> > 73s
> >> >> > Butch Bussen
> >> >> > wa0vjr
> >> >> >
> >> >> >
> >> >>
> >> >>
> >> >>
> >> >>--
> >> >>No virus found in this incoming message.
> >> >>Checked by AVG Free Edition.
> >> >>Version: 7.5.467 / Virus Database: 269.7.5/812 - Release Date:
> >> >>5/19/2007
> >> >>1:52 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) 697-5753
> >>
> >>
> >>
> >>--
> >>No virus found in this incoming message.
> >>Checked by AVG Free Edition.
> >>Version: 7.5.467 / Virus Database: 269.7.5/812 - Release Date: 5/19/2007
> >>1:52 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) 697-5753
>
>
>
>--
>No virus found in this incoming message.
>Checked by AVG Free Edition.
>Version: 7.5.467 / Virus Database: 269.7.5/812 - Release Date: 5/19/2007
>1:52 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) 697-5753
|
