CZ 5 questions about lower conductive coin readings.

[Mike Hillis]

I picked up a CZ-5. I like it for silver coin hunting. But it has some issues I need to figure out with lower conductive coins.

High coins do well. A dime air tests out to about 10 -1/2" witht the Sensitivity set on 4.5. So I'm happy with the dime test.

But I'm having some issues with the lower conductive coins like zinc cents and nickels.

In Normal mode, Zinc cents id as high coin instead of zinc cents. Jefferson Nickels id as Nickel until about 6 inches where they shift to round tab, then another inch or so they move to square tab and then bounce around through out the low conductive range.

In Salt mode, Zinc cents read as zinc cents. Jefferson Nickels id as foil out to about 5 inches then start moving to Nickel. Buffalo Nickels stay in the foil section longer. At fringe depth they both start bouncing around.

Anybody else experience anything like this?

While I'm at it, I also need a new knob for the ground balance control. Got a radio shack knob on it now and need to replace it.

HH
Mike

 

[tvr]

Mike,
Sounds like it may not be tuned optimally. I'm guessing that a retune won't make much difference on depth of detecting the targets, but may help with the ID's.

My CZ6a in normal will bounce foil to nickle on buffalos when they get about 6 inches through about 8 inches when they stay foil and then become beyond reach. Jeffersons pretty much stay hightone until they start to bounce mid-high around 8 inches and then go away. Not much different in salt mode. It is fairly accurate on zincs as long as they aren't all eaten up. If a zinc is corroded, it may be tabs, foil or bounce.
Cheers,
tvr

P.S. Lets see if a couple more people think the same or have other ideas!!

 

[patch]

my cz-5 can bounce around in different kinds of ground. indian heads id as zinc. the cz-6 used to id silver dimes and quarters as zinc pennies in super wet ground.just bought another cz-5 used two times for 250.00. good luck

 

[Dan-Pa.]

Mike it needs a tune as its out of whack......CZ's certainly are as deep as any on silver but not a depth demon on nickels....remember most older (nickels,buffalo, shield, V) come in lower on any unit and reason the CZ3D has a wider meter area and usually picks them all up in nickel whereas a conventional CZ may ID them as foil or foil to nickel bounce.

 

[Mike Hillis]

Thanks for the replies everyone.

I'd like to get it working as designed. So I think I'll send it into Fisher for a tune up.

Anyone recently sent a CZ to Fisher for a tune up? Like to know how they did the job. I like the over all performance of this of this CZ and would like to keep that aspect of it.

HH
Mike

 

[nge]

I used to own a CZ-5 and the one thing I could never find was indian cents. Well....another member of our club (Michigan Treasure Hunters) also had one...this was way back when they first came out. He told me that if the machine locked on "zinc" cent, as long as it was at least 3 inches or deeper DIG IT, they are actually indian cents! So I went back to the area where I was getting deep zinc readings and dug them all, they were indeed I.H.'s That day I dug 17 I.H.'s in an area about 50 X 50ft. I don't really know if any of you knew this, but I sure wish I could've kept that machine. .......nge

 

[Dan-Pa.]

Real old Indians(fatties) can actually come in as square tab on conventional CZ's.....don't know about CZ3D which has different meter parameters...yep indeed newer Indians come in as Zinc cent so be careful if hunting an old area....

 

[mike from Illinois]

Real old Indians(fatties) can actually come in as square tab on conventional CZ's.....don't know about CZ3D which has different meter parameters...yep indeed newer Indians come in as Zinc cent so be careful if hunting an old area....

Yes the fattie indians come in square tab on the cz-3d also.

 

[carvlin7]

I have a CZ-5 and similar results - 2 things: Tom D will tune to CZ 3D specs - I plan to have this done at some point. Also, lost a knob, emailed Fisher, and they sent me 2 at no charge.