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There seems to be a lot going on inside the GB2 coil. Could this be part of its magic? I love that detector. 

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 You're a heck of a photographer Mr. Strick.

Could you bring that thing up with you on your next trip. I would like to play with it and see if it could be adapted to field use. How much depth do you think we could get with it?

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I've fixed the links in my post, which was hard work. I'm going to have to practice if I'm going to post any more links in the future.

The GoldBug2 has a few recognisable features:

The fans of 6 or 7 wires are where connection is made to the graphite paint finish on the shell inner surface - one for the top, one for the bottom, I assume. The wires are bare tinned copper, possibly melted into the plastic, possibly taped down. Then the graphite is painted over the top of everything.

There's a capacitor in there, the rectangular thing on two wires, typically a wound polypropylene type, in a little plastic box. This will tune the transmit coil.

The excess of spare wire is what would be used to get the correct null, where there's very little output from the coil when nothing metallic is nearby. This could be moved around, formed into small loops, etc, in addition to moving the location of the central ( RX and bucking ) coil assembly about a bit.

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Thanks Primento, excellent information in your posts.  So the fireworks inside the GB2 coil are shielding wires.  It just looks such a messy coil compared to the more modern coils.  I remember in 2015 the GB2 coils had some improvements I don't know if anything internally and if stricks is an old or new one, would be nice to one day see a comparison between the old and new on an x-ray to see if they made internal changes.  I think I'm getting a GB2, the owner is overseas but has agreed to a price which I was very happy with, only thing is I have to wait until he gets back at the end of the year, no rush for me anyway.  I've just always wanted one.

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21 hours ago, klunker said:

 You're a heck of a photographer Mr. Strick.

Could you bring that thing up with you on your next trip. I would like to play with it and see if it could be adapted to field use. How much depth do you think we could get with it?

Klunker I am surprised you don’t know the answer to that one...or are you being rhetorical?

40% more depth would be my quess......?

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1 hour ago, klunker said:

 You're a heck of a photographer Mr. Strick.

Could you bring that thing up with you on your next trip. I would like to play with it and see if it could be adapted to field use. How much depth do you think we could get with it?

I bet that would bring out the details on worn out coins. No more guessing what your worn out slug is!

 

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Here’s the inside of my coil. 

9DBD9268-3279-4106-9A11-0B2BB41E575E.jpeg

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Excellent post Strick! 

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On 6/24/2019 at 6:29 PM, strick said:

I got another x ray  generator couple weeks ago....

I'd say!  You obviously have a super high quality imager, too.  Back when I was 'playing' with X-ray an generator (25+ years ago) we had an interlock on the door to the room where it was located.  You weren't allowed (supposed to be) in the room when the generator was powered on.  Clearly you know what you're doing (or don't tell us in case you don't ?).  Thanks for the cool pics!

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1 hour ago, GB_Amateur said:

I'd say!  You obviously have a super high quality imager, too.  Back when I was 'playing' with X-ray an generator (25+ years ago) we had an interlock on the door to the room where it was located.  You weren't allowed (supposed to be) in the room when the generator was powered on.  Clearly you know what you're doing (or don't tell us in case you don't ?).  Thanks for the cool pics!

The state has a regulatory board that sends out a X ray cop that checks the equipment every couple years..I'd like to have his job...drives around all day and does basically nothing but put a little sensor near the machines that can tell if it's putting out in the right direction lol. Then comes the bill every two years...funny thing is I know other practitioners that have never been checked before... bureaucracy at its best. I have two portable hand held units for field use...legs, necks, upper backs etc.. 

strick 

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