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Got a New CZ3D NASA TOM detector on the way. Coil suggestions?

silverman

Active member
It is coming with the 8" coil. I'm not sure if I want my second coil to be the larger 10.5 or the 5". I can't wait to try this thing. I've always wanted one, and finally, the right deal came along for a 1021 with a 12" certification. I love old silver, so I can't wait to see what it can do. I hear it's really good in iron with the right settings too, so that's a huge plus.
 
The 10" is a bit deeper. Cz's aren't the best in high iron. You got a good one, good luck.
 
Do they get fooled in iron Steve? I heard they do if the sensitivity is too high, but do well otherwise. That's what I heard anyway. I hope that's true.
 
It's hard to beat the stock 8'' coil for depth and separation. Once you get used to it I would get the 10.5'' coil even though heavy it is a little better at hitting deeper coins on edge due to it's elliptical design. I never cared for the smaller 5'' ''hockey puck'' coil on CZ-3D's as in enhanced mode it seem to like deeper smaller nails then a regular CZ did. JMHO.
 
Nothing that can't be overcome with some time on the cz. They like iron, silverman, but they really love old coins. Sens around 5 should do. You can run it higher but you'll notice it will be falsing on iron off the sides of the coil. If you get a high tone, circle the target once you get it centered under the coil. If you get several grunts around, it will most always be a nail or iron. Dig quite a few, you'll see what I'm saying. Keep it ground ballanced spot on with the pumping method.
I'm tickeled you got a 12 incher from Tom. I think you may never part with it. Keep us posted on your hunts with it.
 
Hunting for old silver at places that have been occupied for a long time, I'd think you may want the 5 inch coil before the 10.5 inch coil. Smaller coil to help with target separation.

My experience with CZ's is that they certainly can go high tone on iron, although I have not used a CZ3D. Coil speed can help you with iron identification. I run with the discriminator set on 0. That setting lets me listen to iron and the non-iron tones. If a target gives an iron grunt and a high tone, slow the coil sweep down. If it is iron, a slower sweep speed tends to keep the tone on the low tone iron grunt. Speed the coil up and it can break to a high tone. If there are co-located targets you can get mixed tones even with a slow sweep. In my opinion, it pays to dig those.

Setting sensitivity too high can make it false with signals that don't repeat well. So don't run the sensitivity higher than where it runs quiet. I have not really had the sensitivity setting affect iron determination, but set too high can make me dig iffy targets that turn out to not really be there.

Enjoy your CZ!
Cheers,
tvr
 
I also have a CZ3D on the way, expecting it sometime next week. It is Tom tuned but only to 10.8" but includes the 5 & 10" coils.

Not sure how well it will handle my highly mineralized soil but trying to eek out a little more depth than my CTX, we'll see. I've read a lot on many forum sites, including Dankowski's, and in mineralized soil it, like many, may struggle.

I'll be following this thread and your posts.

HH
 
I really appreciate all of the advice guys. I just ordered Tom's video as well. I hear it really helps with the learning curve. I think it's going to be a good fit in my arsenal. Nothing I love more than deep old silver. I'll keep everyone posted, but I may be a while due to the frozen solid ground.
 
Why im glad i live in california, it doesnt freeze here, im still hitting all the parks and beaches.
 
silverman said:
It is coming with the 8" coil. I'm not sure if I want my second coil to be the larger 10.5 or the 5". I can't wait to try this thing. I've always wanted one, and finally, the right deal came along for a 1021 with a 12" certification. I love old silver, so I can't wait to see what it can do. I hear it's really good in iron with the right settings too, so that's a huge plus.

1. It depends on the trash conditions where you want to hunt for the 'deep silver'. If there's not much trash, the 10.5" WILL go deeper...about 1.5" or so. In my ground that means about 15 years deeper.
BUT - If you've got lots of trash, the larger coil will just mean more 'nulling' and lost targets. In that case the 5" will be better. But it won't, of course, go as deep as the other two coils.

2. No VLF motion detector is ever really 'good in iron', especially after the ground gets good and soaked. As an old nail or wire rusts, it (tips especially) leaches into the soil and gives off a broad conductivity that will unfortunately cross right into the same range as silver. Particularly when the iron halo 'sponges' up the water. You'll learn to spot most of these signals before you dig. Sometimes they'll appear as a double blip (from both ends). As Steve O said, circle the target signal and observe the response.
Note: That because these nail 'halos' can be quite large when damp, you can dig up rusty nails from some pretty amazing depths.

3. Because Tom widens the enhanced ID mode in order to get the older coins, the zinc penny will frequently jump into the higher classification. This is normal. If it's driving you crazy, and you're just looking for the later 1900's coins, simply switch to salt mode...even if you're not on a beach...it will work just fine.

Good Luck, and Have Fun,
:)
mike
 
Thanks Mike, very informative. I know what to expect now. I've had many detectors in my hand, but this is my first CZ. I will try the circle technique you and others have mentioned. I'm looking forward to using this detector. But if it doesn't work for me, I'm sure I'll have no trouble getting rid of it.
Thanks again!
 
Google Mikes CZ page its a bible for CZ owners.....As far as acc.coils go depends on your hunting conditions and an all around package is getting both...
 
silverman your really going to enjoy the information given on the vids. Dont know how mine will still play due to how many times they have been in the DVD player. Can say this though...it cut the learning curve by a large margin. Knew what I was listening too and how to work the iron areas ect.

To each their own but I really liked the 5" coil for working the trash. Guess it just depends on the areas you intend to hunt. Good luck and congratz on the unit.

Let us know about the great finds ya pull in.
 
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