Is my barracuda working correctly?

[omr255]

Hi!

I have finished building the kit and all was working good (air test 27-30 cm).
I decided to take it for a test run at the beach, hearing lots of good things about the barra, I had some hope that it would function well on the wet sand better than my at pro.

But as soon as I turned it on there was alot of falsing.
Does anyone have experience using this machine in that type of environment?
What should the settings for optimum performance?

[homefire]

Falsing when you swing the Coil ? Did you shield your coil ?

[Qiaozhi]

Check your cable shield is connected to 0V, and not the other end of the coil. Also, as homefire says, make sure your coil has a Faraday shield.

[kt315]

255 shielding inside enclosure is clear for you or you need additional pics of high resolution?
http://www.findmall.com/read.php?34,...21#msg-2242321

FARADAY SHIELD is ANTI STATIC ELECTRIC FIELD INFLUENCE PROTECTION

[omr255]

I was not aware that the shield had tobe grounded (misinformed by video). I have now used a single piece of aluminium foil stuck to masking tape and wrapped the coil with it. I made sure there was no breaks using multimeter continuity test. Which coax cable should I use (multicore coax or single)?

[omr255]

Check your cable shield is connected to 0V, and not the other end of the coil. Also, as homefire says, make sure your coil has a Faraday shield.

Here is a picture of the coil wrapped with aluminium foil and polyimide tape.
http://imgur.com/Bz0dNwE

[Qiaozhi]

Here is a picture of the coil wrapped with aluminium foil and polyimide tape.
http://imgur.com/Bz0dNwE

You must have a break in the shield, otherwise it will act like a shorted turn and completely kill the sensitivity of the detector.

[omr255]

You must have a break in the shield, otherwise it will act like a shorted turn and completely kill the sensitivity of the detector.

Ok thanks for telling me.
I have cut a gap in the shield using a surgical scapel.
http://imgur.com/qyXpFTg
http://imgur.com/5ACQmYL

[omr255]

You must have a break in the shield, otherwise it will act like a shorted turn and completely kill the sensitivity of the detector.

Could there be any problems if the sheild slightly overlaps without making contact and and insulated from the loop?

[Qiaozhi]

Ok thanks for telling me.
I have cut a gap in the shield using a surgical scapel.
http://imgur.com/qyXpFTg
http://imgur.com/5ACQmYL

Your remote server, where you store your files, is over capacity and the images are not visible.

[Qiaozhi]

Could there be any problems if the sheild slightly overlaps without making contact and and insulated from the loop?

It will probably still work, but I've never tried it.

[omr255]

Your remote server, where you store your files, is over capacity and the images are not visible.

Sorry, i thought it was just my internet messing with me.
http://imgur.com/UesRD7I
Here is the cut shield.