[TowerTalk] Quad vs SteppIR

[Michael Tope]

One big advantage of the quad that is often neglected is turning
radius. Quads are great if you are in a tightly confined where you
can't afford to have long yagi elements hanging over property
lines or running into nearby trees.

73 de Mike, W4EF.................................

----- Original Message -----
From: "Joe Giacobello" <k2xx at swva.net>



> Rick, I'm not sure what you mean by directive, but there's no doubt that
> quads have poorer F/B than Yagis.  Quads seem to have a very narrow
> frequency range over which the F/B peaks, but across the rest of the
> band it's at least 10 dB poorer than a Yagi, if not more.  Nevertheless,
> I am using a four element, five band quad on a 24 ft. boom, and the
> model shows that forward gain is at least equivalent to a three element
> monoband Yagi on 20M and better on the higher frequency bands where the
> boom length is longer.
>
> I am also not thrilled with the common feed approach that Mike uses.
>  Lew McCoy, in his review of LB quads indicated some interactions
> between harmonically related bands,  i.e. 10 and 20 meters, but I
> believe that the feed system has been modified since then.  I use
> separate feeds for each band via a remote switch and my experiences have
> been excellent.  I have to admit that I've not done actual A/B testing
> on quads vs Yagis, but my on the air experiences indicate that they are
> quite competitive.
>
> I use LB parts in my home-brew quads, and they are of excellent quality.
>  Mike also gives attentive, personalized service.
>
> Finally, I would say that a multiband quad is an easy way to get the
> equivalent of  multiple monoband Yagis on a single, (relatively) simple
> support structure.  There's a lot to be said for that.
>
>
> 73, Joe
>