Re: [TowerTalk] Help needed on new beam

[Jim <jimw7ry@gmail.com>]

I ran 1500 watts to a TH7 in southwest Washington for 15 years in RTTY 
contests. It finally blew up after 15 years.
Most likely water or bugs in the 15 meter trap. Took it down and moved 
to Missouri shortly there after. I too have wallpaper using it.
Thanks
73
Jim W7RY

On 1/8/2019 6:25 AM, john@kk9a.com wrote:
> I remember seeing a burnt TH7 trap on the wall of the P49V/P40YL shack
> with a note that said this is what happens when you run more than 500
> watts on RTTY. Of course there may have been a salt buildup or other
> contributing issues. I have won many contest plaques using trapped
> antennas so they are not horrible. The original poster was looking for
> minimal windload for a light duty tower so a two or three element trapped
> tribander is a good option.
>
> John KK9A
>
>
> Jim w7ry wrote:
>
>
> If traps were as lossy and you think, why don't they just smoke and burn
> up when on RTTY at 1500 watts?
>
> Get your calculator out, and if they really are that lossy, would they
> would catch fire dissipating all that loss?
>
>
> Thanks
> 73
> Jim W7RY
>
> On 1/7/2019 3:19 PM, Michael Murphy wrote:
> > The Navassa 5 really isn't that big.  Probably has a smaller footprint that
> > a KT34a.  And with full size elements may perform at least as well if not
> > better.
> >
> > Stay away from trap antennas whenever possible.
> >
> > Mike - KI8R
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