Topband: Fw: AM broadcast tower and 160m dxpedition

[Bruce]

I agree with Herb.     Also Haiti is on an earthquake fault. The quarter 
wave tower would have a better chance of survival and is safer.

73
Bruce-K1FZ



----- Original Message ----- 
From: "Herb Schoenbohm" <herbs at vitelcom.net>
To: <topband at contesting.com>
Sent: Tuesday, February 25, 2014 5:53 PM
Subject: Re: Topband: AM broadcast tower and 160m dxpedition


> Half wave verticals have been very disappointing to me over the years when 
> I had the tall BC towers in my backyard to play with after midnight on 
> 160. I have had much better result in hanging 1/2 wave center fed slopers 
> of of high towers.  Radio stations seem to prefer if they have extermely 
> high towers like KSTP in St. Paul to split them with an insulated section 
> and feed them as a Franklin design and pick up some additional gain along 
> the ground. Some designs do not required two stacked half waves but 
> achieve significant height by folding back the top and bottom sections 
> with a cage or in fact using a top hat and an equivalent on the bottom. 
> The proper phasing section is mounted in a box at the center split and the 
> feedline is inside the tower.  Why this should work any better than a 
> straight 1/2 wave, as it seems to is available perhaps in those who can 
> model and compare the two.  It seems however that topbanders who expect 
> good results with a bottom fed 1/2 over a traditional 1/4 wave over a good 
> ground, seem to come away disappointed like myself.
>
> Herb Schoenbohm, KV4FZ
>