[Antennas] 5-Band Quad VSWR

Thu, 2 Jan 2003 08:02:30 -0500

Dave,

Thanks anyway for the reply, but like I said in my original message, I
already have the tuner and am using it. However, knowing how excellent the
bandwidth was with the 2-element quad in relation to the way it is now,
..."I will never be satisfied until the quad can be tuned for a better
VSWR."
73
Walt KF2XN

----- Original Message -----
From: "David W Sher" <[email protected]>
To: <[email protected]>
Cc: <[email protected]>
Sent: Thursday, January 02, 2003 04:45
Subject: Re: [Antennas] 5-Band Quad VSWR

> Suggest you get some sort of auto tuner, and enjoy kicking tail.
>
> Dave          W9LYA
> What wrought doG hath?
>
> On Thu, 2 Jan 2003 04:10:10 -0500 "Walter J. Slazyk" <[email protected]>
> writes:
> > Dear Group,
> > During 2002, I purchased the Lightning Bolt retrofit kit and
> > upgraded my
> > 2-element (8' boom) quad to a 4-element (24' boom). The design is
> > typically
> > for a single coax feed line through a balun, using a 150' run of
> > LMR-400
> > coax from the tower to the shack. I was very careful to cut the wire
> > loops
> > with precision to the specifications that come with the kit. When
> > completed,
> > I raised it to about 65' and graphed VSWR readings on all 5 bands.
> > My
> > concerns are that the readings are substantially increased over my
> > old
> > 2-element unit and well over 2.5:1 in some parts of the band.
> > Previously,
> > the quad had excellent bandwidth with pretty flat SWR readings with
> > excursions not much higher than 1.5:1 with fairly decent directivity
> > and
> > side lobe attenuation. With the retrofit 4-element unit, I now have
> > to use a
> > tuner to get back to 1:1 SWR but this think kicks some serious
> > tail.
> > Directivity seems unimpressive but I get through the nastiest
> > dogpile on the
> > first few calls but because I am aware of the crappy VSWR, I will
> > never be
> > satisfied until the quad can be tuned for a better VSWR. I have
> > tried just
> > about everything but am open to helpful suggestions short of junking
> > it and
> > going back to a manufactured tri-band beam.
> > Any ideas?
> > Walt KF2XN
> >
> >
> > - - -
> >
> > Your moderator for this list is:
> > Larry Wilson KE1HZ [email protected]
> > _______________________________________________
> > Antennas mailing list
> > [email protected]
> > http://mailman.qth.net/mailman/listinfo/antennas
> >
> >
> - - -
>
> Your moderator for this list is:
> Larry Wilson KE1HZ [email protected]
> _______________________________________________
> Antennas mailing list
> [email protected]
> http://mailman.qth.net/mailman/listinfo/antennas
>