[TowerTalk] quad ant
Ward Silver
hwardsil@wolfenet.com
Mon, 18 Jun 2001 03:20:02 +0100
That works pretty well for assembly. The tricky part is then getting it up
to the top of the tower - tram line works OK.
Individual feed is definitely the way to go. I use an RCS-8V 5-pos remote
coax switch. On 20/17/15, I have a 1/4-wave matching section of RG-62/U (93
ohm coax) going from the switch to the feedpoint and straight 50-ohm coax on
12 and 10-meters. You also should have some kind of strain relief for the
cable at the feedpoint to keep the feed from breaking loose as the cable
flops around in the breeze, breaking the #20 solid wire Gem provides.
73, Ward N0AX
----- Original Message -----
From: alsopb <alsopb@gloryroad.net>
To: <n4kg@juno.com>
Cc: <TOWERTALK@contesting.com>
Sent: Monday, June 18, 2001 1:50 AM
Subject: Re: [TowerTalk] quad ant
> That's how GEM quad tells you to do it. You first pound a small
> diameter pipe in the ground,put the boom over it and position boom and
> the spiders with a hose clamps.
>
> You then align the quad loops and tighen up the hardware.
>
> Easy!
>
> After you get it up, you can attach a rotatable 40M dipole to the same
> mast about 1' above the quad boom and parallel to it. No interaction.
>
> 6 bands one rotor. Not bad. Pretty small turning radius.
>
> 73 de Brian/K3KO
>
> n4kg@juno.com wrote:
> >
> > Two Element Quads are fairly easy to install with the
> > tram method. Assemble the quad with the elements
> > parallel to the ground, run the tram line through the
> > center. After it is attached, pull the tram line taught
> > enough to lift the quad to it's normal orientation and
> > away you go.
> >
> > BTW, W4RNL and K7GCO report better performance
> > with individual feeds vs. the "tie the elements together
> > and feed 'em all" approach.
> >
> > Tom N4KG
> >
> > ________________________________________________________________
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> List Sponsor: Are you thinking about installing a tower this summer? Call
us
> for information on our fabulous Trylon Titan self-supporting towers - up
to
> 96-feet for less than $2000! at 888-833-3104 <A
HREF="http://www.ChampionRadio.com">
> www.ChampionRadio.com</A>
>
> -----
> FAQ on WWW: http://www.contesting.com/FAQ/towertalk
> Submissions: towertalk@contesting.com
> Administrative requests: towertalk-REQUEST@contesting.com
> Problems: owner-towertalk@contesting.com
>
List Sponsor: Are you thinking about installing a tower this summer? Call us
for information on our fabulous Trylon Titan self-supporting towers - up to
96-feet for less than $2000! at 888-833-3104 <A HREF="http://www.ChampionRadio.com">
www.ChampionRadio.com</A>
-----
FAQ on WWW: http://www.contesting.com/FAQ/towertalk
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com