I have shunt fed my US tower crank-up on 160m with no problems. These
towers have metal-on-metal slides between the sections and I rather doubt
there is any problem with electrical continuity......I suspect this
"continuity/ resestivity" concern for crank-ups is mostly a non-issue unless
the tower has insulated roller slides.....even then....doesn't it have
cables and metal pulleys?? I also assume your coax is grounded at the
top....and ends up at the bottom. Just feed it and try it.
de Steve VE6WZ.
----- Original Message -----
From: "RCARIELLO" <RCARIELLO@si.rr.com>
Sent: Thursday, October 25, 2001 6:10 AM
Subject: [TowerTalk] Loading crankup towers?
> With all this talk about vertical antennas let me ask this question.
> I have been told that a crankup tower will not load well as a vertical do
> the sections not being fastened together.
> My thought would be to hang wires along the side of the tower similar to a
> cage dipole with the tower inside. These wires would be spaced and
> from the tower. At the top the wires would be joined together. At the base
> ring going around the tower where all the hanging wires would be
> attached.This cage of wires would be insolated from ground. Along the
> spacers or rings might be used to prevent the hanging wires from hitting
> and shorting to the tower. To extend the height of the tower a vertical
> element could be attached to the wires but insolated from the tower.
> Comments please.
> Rich AA2MF
> List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems,
> Trylon Titan towers, coax, hardline and more. Also check out our self
> supporting towers up to 100 feet for under $1500!!
> FAQ on WWW: http://www.contesting.com/FAQ/towertalk
> Submissions: firstname.lastname@example.org
> Administrative requests: towertalk-REQUEST@contesting.com
> Problems: email@example.com
List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems,
Trylon Titan towers, coax, hardline and more. Also check out our self
supporting towers up to 100 feet for under $1500!! http://www.anwireless.com
FAQ on WWW: http://www.contesting.com/FAQ/towertalk
Administrative requests: towertalk-REQUEST@contesting.com