[TowerTalk] (no subject) Vertical Antenna Instead ofTower Decision....

[Dennis]

A new technique for feeding towers has been adopted for Amateur use from the broadcast industry.  You drop 3 heavy gauge wires connected at the top of the tower to within a few feet of the bottom.  Connect the three wires together with a wire ring around the base of the tower and feed that ring, connected to the three wires, with a simple L-Network with respect to your radial system.

Very effecient system.  Several local DXers us it on 160m and 80m with great results.  One tower is 140' and the other I know is about 90' with a lot of top loading from various beams....

You can Google this type of tower feed and get more information....

Dennis, k0eoo


---- Don Hall <donhall161 at sbcglobal.net> wrote: 
> Use your tower with gamma or omega matches on 80/160. Works best with a 
> self-supporting one, but lots of operators use insulated guys.
> 
> I made my 160 DXCC with an LM354 loaded that way on an 80x120 lot in the 
> middle of town.
> 
> Can be done.
> 
> 73  Don  K5AQ
> ----- Original Message ----- 
> From: "Richards" <jruing at ameritech.net>
> To: <donovanf at starpower.net>
> Cc: <TowerTalk at contesting.com>
> Sent: Tuesday, September 23, 2008 4:03 PM
> Subject: Re: [TowerTalk] (no subject) Vertical Antenna Instead ofTower 
> Decision....
> 
> 
> > Hi Frank --
> >
> > Thanks for the strong reply to my questions.    Based on your comments, I
> > would be better off making higher, longer, and better wire antennas and
> > working towards a beam on a tower, instead of looking for a vertical
> > compromise today.
> >
> > The six month tower estimate is my own estimate based on several
> > factors, including the time it takes to  1)  research and plan the tower,
> > 2)  order it and have it arrive - many companies are several months out
> > on delivery dates,  3)  the time it takes to get the local tower expert 
> > over
> > to put it up -- regardless of how much money I MIGHT save, I plan to
> > hire it done by a licensed, bonded, insured, experienced and collectible
> > professional I can sue when it falls over.   (I am a retired trial
> > lawyer...I
> > KNOW the liabilities and risks.. ),   and 4)  it takes time to get the
> > antenna
> > delivered, assembled, and ready for installation.  Moreover, it is nearly
> > October and we will soon be in the Michigan rainy season, and then
> > snow flies starting in November for the next 5 months, and the reliable
> > good tower guys do not install in winter.
> >
> > Thus,... I figure I could realistically get my tower up starting next May
> > as I cannot get it all arranged before November.   This makes it a
> > winter project that can go up early spring if I get on it starting now.
> >
> > THE REAL DILEMMA
> >
> > My real problem is that I want to work the lower bands and do not have
> > much space for long wires.  I can put up a tower and a modest beam...
> > but that will realistically only get me out on 20 Meter and higher.  I 
> > will
> > still be stuck for anything on the low bands... which is why the HyTower
> > and the mono pole vertical (which can both be tuned down to 160 and 80
> > meters)  were so appealing on paper.
> >
> > Thanks for any other suggestions you might have.
> >
> > ================  JH Richards - K8JHR  =================
> >
> >
> >
> >
> >
> > donovanf at starpower.net wrote:
> >
> >> 1. Retain your existing antennas until you install something more 
> >> permanent.
> >> > Compared to your existing antennas, you'll be disappointed in the
> > performance of any of the alternatives you listed on 20 thru 10 meters.
> >
> >> 2. Accelerate your tower installation.
> >>  Its not obvious why a tower installation  must take 6 months.
> >
> > =======================================================
> > _______________________________________________
> >
> >
> >
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