On Tue, 2008-06-03 at 18:57 -0700, Jim WA9YSD wrote:
> 2000pf capacitor is not your normal find at a swap fest these days.
And it has to carry significant current. If the resonant impedance is
100 ohms, 100 watts puts 100 volts RF across the capacitor. And with a
reactance of 20 ohms that puts the current at 5 amps. Takes a minimum
1.5 x 2.5" molded transmitting mica. Else the capacitor burns up.
> I have seen this use before and one of the hams on field day built one
> and we used it. Only problem was we had nothing up to compare it with.
> That was 10 years ago.
>
> It is nice that these programs work out as expected. How ever, I found
> the DB antenna to be just as quiet as a folded dipole when I ran a
> comparison on 17M last year for about 3 weeks. The double
> bazooka was a better receiving antenna when I tested them. Looking
> back at my notations The Double Bazooka noise floor was a needle width
> less than the folded dipole on the OMNI VI Plus on 17M. Maybe because
> of my location which is not NOT a IDEAL situation, the Double Bazooka
> worked better for me on 17M for what ever reason. I challenge any one
> to put one of these up and compare it side by side to another wire
> antenna and see what happens. Theory says I am off my rocker, the
> thing works well for me.
17m is not a band that needs the alleged broad bandedness of the
Bazooka.
>
> It is a fun antenna to play with. It stood up against the
> 124 inches of snow and wind we had this last winter. Its all
> about strain relief and how it is done to keep it in the air
> and the same for any wire antenna.
But when the metal cross section is 5% of the wind area the bazooka
stands wind and ice far poorer than a wire with 100% of the wind area
being metal.
>
> Keep The Faith, Jim K9TF/WA9YSD
>
73, Jerry, K0CQ
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