CZ 5" coil depth

[joe dirt_1]

I would like to hear what kind of depth CZ users are getting with their 5" coils on a dime.
I'm using a CZ5 with 8" and 10 1/2" coils and am getting deep silver dimes at up to 10" or so
using 0 disc and sensitivity of 6 with volume at max. I'm hoping the small coil will hit some of the deeper dimes that
are being masked by square nails and other trash that the other coils are missing. I used the 5" coil on my CZ70 and know it is
a hot coil, but never dug anything much over 5 inches or so with it. Would like to hear what other CZ users have to say about it.
Thanks and HH.............

Roger

 

[Dan-Pa.]

Probably a 6 inch max. depending on your ground and a slow swing...Rememember in most case you can run your sens. higher with it and also with a analog CZ I would use autotune and one turn of the knob and you get the appropriate audio and meter reading..Never felt autotune was that much deeper but to me seems to enhance the coverage and read from the sides as the hockey puck coil is small...and extra coverage is a plus...

 

[joe dirt_1]

Thanks Dan. I really thought the small coil would be deeper than 6 inches, but that will hit most of the coins that are mingled in around the shallower trash items. Gonna give it a try at an old area that has mainly square nails and .22 cal bullets and cases as the main trash items...it predates all the aluminum junk. My ground is pretty mild, my cz usually ground balances about 3 to 4 in most places. I learned along time ago that the cz's needed to be hunted slow to get the best depth. Might give autotune a try, especially if I try taking a 5'x5' area and digging everything that beeps.

Roger

 

[tvr]

I'm right there with Dan on about 6 inches in good ground with the 5 inch coil. And a shallow quarter gives the overload signal. It seems to do the overload signal more than the 8 inch coil does for me.

 

[Dan-Pa.]

Thanks for the input the 5 inch coil will indeed give more overload signals especially on large shallow coins and should have related to that in my post so attaboy for your headsup...

 

[WV62]

When you get your little coil, I would suggest a little air testing and compare the test results with your std 8" coil. With those numbers and I am guessing that you may already know how deep the 8" is going in the dirt you can use the same number difference air to ground with the std 8" coil. So lets say you get 12" air and 10" ground you loose 2" in the ground. Of course those are just made up numbers.

Do the same thing with the 5" coil, air test get that number and then back off the same number as your did on the 8" coil. That should give you a ball park number to get you started.

Ron in WV

 

[Johnny]

I get 8" on a dime with my cz 5 and 5" coil.

 

[Dan-Pa.]

If in the ground great depth ...not into those air tests myself unfortunately I find them to be ball park at best...but dial in good ground with light minerlization, perhaps wet ground and a hot CZ and one can surely get 8 or perhaps more on a wet saltwater beach..6 inches I would say is average and use a 20 year old planted garden myself with medium mineralization to do any testing..

 

[ken(toronto)]

That's what I got:

nickel 7.25"
dime 8"
quarter 8.25"
Large cent 9"

air test, all Canadian Coinage

Ken

 

[BJ in Okla.]

A friend had a test spot with 8" and 9" silver dimes.
With my CZ 3d and 5" coil,
Sens at 4.5
Vol. at just under 5
Zero disc
Ground bal. was around 5
I could hit everything, the tone and id would be right...
And I would say, if there had of been a 10" dime, I bet I would have heard it.
This is in our soil....and the test spot was old.
BJ