Doubler needed?

[AAflyer]

Do the simple, short post antenna really need a doubler? I'm thinking a big fat washer should do the trick.
Comments?

 

[AAflyer]

bump

 

[blueflyer]

If it were me, I would make the doubler in less than 5 minutes and be done with it and forget it.

 

[bruceh]

I researched this a bit during my build and went with a doubler under every antenna.

 

[jdeas]

I would

Think also about someone bumping into it while under the plane. Doubler could save the skin from creasing at the edge of the Ant.

 

[KiloWhiskey1]

If you mount it close to a supporting structure, like between floor ribs, you should be able to do away with the doubler.

I've got two whip antennas under my seats that have no doublers. IIRC, I used the same setup on my 1st 7 and flew about 500 hours with no issues prior to selling it.

Why add the weight if the ribs provide a solid base for the skin on which the antenna mounts?

 

[BillL]

Think also about someone bumping into it while under the plane. Doubler could save the skin from creasing at the edge of the Ant.

+1 this is the final reason I used a doubler. 30 year life is a long time for exposure to potential hazards like this.

 

[LettersFromFlyoverCountry]

Ditto. I used the doubler. Couldn't think of a compelling reason not to that overwhelmed the numerous reasons why it was a good idea.

 

[paul mosher]

If you mount it close to a supporting structure, like between floor ribs, you should be able to do away with the doubler.

I've got two whip antennas under my seats that have no doublers. IIRC, I used the same setup on my 1st 7 and flew about 500 hours with no issues prior to selling it.

Why add the weight if the ribs provide a solid base for the skin on which the antenna mounts?

Because the weight of the doubler will be less than that of a repair. I doubt a doubler would weigh more than a ounce.