[TowerTalk] Cushcraft/MFJ Traps

[David Gilbert]

You know that power loss doesn't equate to lost pattern gain, right?

Trapped tribanders have shorter elements, which has an effect on 
pattern, and they have non-optimal element spacing for any particular 
band, which again affects pattern gain.

I'm not saying that trapped tribanders don't have utility, but compared 
to a modern non-trapped design they suffer from more than just the heat 
they generate.

Dave   AB7E


On 9/12/2019 12:55 PM, Glenn Pritchard wrote:
> Trapped yagis don't suck up gain, another myth easily dis-proven. I have
> used trapped yagis and mono banders over the course of 30+ years and at one
> time had the big Wilson 40M3 I believe it was called, 3 full sized 40 meter
> elements on a 40' boom..
> It is shown that maybe a trapped yagi has at worst a 0.6 dB loss over a
> full sized yagi of the same band. It's no surprise that I like trapped
> yagis because of space restrictions right now and having the ability to add
> 40 meters to one is skookum.
>
> I would like to have mono banders only for 40 and 20 again, perhaps one day.
>
> Glenn, VA7UO
>