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Author Topic: Spray Painting antennas  (Read 2281 times)
WB9YCJ
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Posts: 4




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« on: November 17, 2009, 10:59:07 AM »

Some Vhf/Uhf antennas are offered in black low profile from the factory (larsen, etc).

Is there any negative performance effect when spray painting your own existing chrome antenna with black enamel (store bought) spray paint in a can?


Thanks in advance,
Ken
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NA0AA
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Posts: 1042




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« Reply #1 on: November 17, 2009, 04:18:42 PM »

Other than getting it to stick?  I'd like to know how well it works for you.

I paint most of my station antenna to make them a bit lower profile, but they don't bend quite like the mobile, nor are they chrome plated.
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K0BG
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« Reply #2 on: November 18, 2009, 06:47:31 AM »

As a sidelight,

The black ones are little better than the chrome ones. The reason is hidden under the paint.

The whip is copper plated, and the paint is applied over the top of the plating. The 'silver' ones are just plain 17-7 stainless steel. The performance difference isn't all that much, if the truth be known.

If there's a problem with them, it's that the paint can be scraped off, even by road debris over time. Mine NMO2/70BK is about 6 years old, and the amount of paint so removed is very small.

Alan, KØBG
www.k0bg.com
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VO1GXG
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Posts: 60




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« Reply #3 on: January 14, 2010, 09:15:53 PM »

i paint the bottom of my ham sticks diffrent colours to tell the diffrent bands apart.
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K0UA
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Posts: 3899




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« Reply #4 on: January 18, 2010, 06:28:31 AM »

I painted the coil of my Larson 2/70 about 10 years ago, It is still beautiful and matches the truck, and more importantly, Works perfectly.  The whip is the old SS style. No way to paint that.
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K0BG
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« Reply #5 on: January 18, 2010, 03:03:17 PM »

Actually, you can paint stainless steel, but you have to jump through a hoop or two.

Rustoleum makes a special primer for stainless steel. If you sand the surface so it's a little rough, it sticks well. Then, you just spay the color you want over the primer. There is a very slight reduction on performance, but you'd be hard to measure it without some rather sophisticated hardware.
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