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Old 03-02-2014 | 10:46 AM
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Only Fine Helis
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Joined: Mar 2014
Posts: 7
Default How to reduce noise in a detection loop

Hey guys, I am having some issues and hoping that someone with more experience can help to enlighten me.

I just installed an indoor carpet track in my shop with a MyLaps RC4 decoder. The coaxial run is approximately 30 ft long (copper shielded wire). The detection loop is 1 ft x 5 ft.

The noise level on the coaxial by itself is around 9 to 10. The noise level on the whole system with the detection loop connected is around 70 during the day and as it gets later in the evening sky rockets to about 150.

I have mounted the detection loop on a piece of cardboard and moved it around the room and up and down with no real difference in the noise floor.

During the day, the noise is not a big deal because the signal from the cars is close to 100 points over the noise. But by 7 to 8pm, I'm concerned that the signal to noise ratio will not be great enough to ensure accurate readings 100% of the time.

Is there any way to shield the loop, or anything else to minimize the noise introduced to the system?

Thanks a bunch for your help!

Shannon
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