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Date:  2-22-2014
Number of Hours:  1.50
Manual Reference:  
Brief Description:  ELT antenna installation

Next was the installation of the antenna.

The instructions say if it's mounted in thin material like a fuselage skin, to add a doubler of 2" in diameter, minimum of .040 thickness. I used .060 thick, and bent it slightly so it matched the fuselage curve.

The antenna needs to be at least 36" away from the radio antenna, so I measured about 40" away from the comm antenna and marked the location. I then drilled a starter hole, and updrilled to a 1/2" diameter with a step drill bit.

To hold the doubler in place I roughed up both surfaces, then used a little epoxy. But the doubler must make contact with the fuselage, so I only dabbed on some epoxy in a thin line around the inside.

I then installed the antenna through the fuselage and the doubler (photos 2 and 3).
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Hole in top of fuselage. It kills me to drill holes in my bird!

Hole in top of fuselage. It kills me to drill holes in my bird!

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Antenna installed.

Antenna installed.

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The installation instructions require a doubler for thin skins, so here is the required 2

The installation instructions require a doubler for thin skins, so here is the required 2" dia doubler

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