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Author Topic: Is 1.8dB loss really bad?  (Read 2479 times)

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gleff

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Is 1.8dB loss really bad?
« on: April 16, 2010, 05:45:58 PM »
I'm buying a Window Gap Jumper that has a 1.8dB loss at 900-1300MHz. 

For any of you that know about this kind of thing, is that going to be significant?

Am I going to notice a lot less aircraft/signal etc?
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http://www.flighttracker.gleff.com - based in Sydney, Australia

Dean

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  • Plane photographer
Re: Is 1.8dB loss really bad?
« Reply #1 on: April 16, 2010, 06:14:49 PM »
-3db = 1/2 your signal gone. dB's are logarithmic and I don't have a calc for 1.8dB.

As to whether you'll notice - that depend on how much signal you have before the loss insertion. If you get one put it as near the antenna as possible.
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gleff

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Re: Is 1.8dB loss really bad?
« Reply #2 on: April 16, 2010, 06:17:08 PM »
ok thanks..  will do.

Assuming I just used the calculator correctly, I can expect about a 25% loss.

I guess we'll have to try it and see.
« Last Edit: April 16, 2010, 06:21:23 PM by gleff »
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