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How hot can you run your CZ70?
- Thread starter wayne_etc
- Start date
Mike (Virginia Beach)
New member
You are correct. If you run it over 4 it will false regularly. Set it at 4 and never change it again and don't worry about it. At sensitivity 4 you are getting 95% of the attainable depth and there is nothing to be gained by trying to run it higher other than instability. This is from Tom Dankowski himself and also my direct personal experience. Many others have made the same realization. It's certainly not a problem, because I have dug coins in excess of the depth meter at sens 4 and bullets out in the woods even deeper than that.
Now if you want to run in Autotune mode, you sure CAN run the sensitivity higher. But then that takes away all of your ID capability. But one instance where you may want to do that is at the beach, for example. Where you want to dig everything and you want to be tipped off to ANYTHING under the coil, such as a fine chain perhaps that may not trip the machine in ID mode, or a stainless watch maybe. I tried that a few times with some success, but still prefer ID mode, sens 4, no disc, for the beach. And my CZ-70 has gotten some deep gold rings like that.
So don't worry a bit about it...you won't miss anything at sens 4. Really, you WOULD be able to run sens at 5 with full stability and get that other 5% if it HAD a setting of 5, like the CZ-5 does. But the CZ-70 went with the 2-4-6-8-10 scale, so 6 is a tad too hot.
If you want to get the max performance you can from it, proper ground balancing is most important. I will append my often-requested version of how to properly ground balance the machine using "The Bobbing Method" in case you or anybody else reading this needs it:
*****************************************************************
(I cut this from a Word document I made up. It's a lot of reading, but only to make sure it's fully explained. It takes seconds to do once you have it in your head)
A lot of folks in here frequently ask the question
Now if you want to run in Autotune mode, you sure CAN run the sensitivity higher. But then that takes away all of your ID capability. But one instance where you may want to do that is at the beach, for example. Where you want to dig everything and you want to be tipped off to ANYTHING under the coil, such as a fine chain perhaps that may not trip the machine in ID mode, or a stainless watch maybe. I tried that a few times with some success, but still prefer ID mode, sens 4, no disc, for the beach. And my CZ-70 has gotten some deep gold rings like that.
So don't worry a bit about it...you won't miss anything at sens 4. Really, you WOULD be able to run sens at 5 with full stability and get that other 5% if it HAD a setting of 5, like the CZ-5 does. But the CZ-70 went with the 2-4-6-8-10 scale, so 6 is a tad too hot.
If you want to get the max performance you can from it, proper ground balancing is most important. I will append my often-requested version of how to properly ground balance the machine using "The Bobbing Method" in case you or anybody else reading this needs it:
*****************************************************************
(I cut this from a Word document I made up. It's a lot of reading, but only to make sure it's fully explained. It takes seconds to do once you have it in your head)
A lot of folks in here frequently ask the question
Sensitivity of 4 is tops also, while in same area I can use older CZ's at 6-7-8..I feel Fisher changed the sensivity parameters. Good news CZ70 will go as deep as older CZ's set with higher sensitivity.I have no doubt in areas of mild mineralization some may be able to set higher but talking from hunters all over the U.S. 4 seems to be the magic number..I still feel you should run your CZ no matter what model as high as it will go sens. wise.
Matter of fact when I first used a CZ70 being used to other models thought it was defective, but not so just the nature of the beast and as deep as any previous CZ model.
Matter of fact when I first used a CZ70 being used to other models thought it was defective, but not so just the nature of the beast and as deep as any previous CZ model.
christopher-ohio
Active member
I routinely run my sensitivity at 6 at old sites. I have had two different CZ-70's(both new). I have found that deeper targets start to show up better at 6 with very reasonable falsing if ground balancing is done well...it may also be possible due to the deep black, loamy soil we have in Northern Ohio...HH
Mike (Virginia Beach)
New member
It very well may be due to your soil. I have occasionally been able to run mine higher when deep in the woods, but it's VERY rare around here that we can go above 4 without falsing. "Reasonable" falsing is fine if you don't mind it and can differentiate between it and a good target, as I know YOU can. Also being an Explorer II guy, you know what it's like to have to decipher a cacophony of sounds while you hunt. 
But for newer CZ-70 users, it can be extremely frustrating to have any falsing going on, particularly when it's hard to tell the difference. When my sister first started, some well-meaning guy told her to crank her CZ up to 6 or 8 and it about ruined her on metal detecting with a Fisher. Once she turned it down to 4 she was a lot happier.
But for newer CZ-70 users, it can be extremely frustrating to have any falsing going on, particularly when it's hard to tell the difference. When my sister first started, some well-meaning guy told her to crank her CZ up to 6 or 8 and it about ruined her on metal detecting with a Fisher. Once she turned it down to 4 she was a lot happier.
From experience run it as high as you can while your machine runs stable...Running it hotter with lots of noise can prevent you from distinguishing deepies and more power may equate to more masking. CZ's to me are the deepest coil for coil around and what I like usually very quiet if ground balanced correctly. As far as tones I hear them very well but glad my CZ don't have any (Cacophonies)..Keep up the good posts Mike as I am just Funnin....
Mike (Virginia Beach)
New member
LOL! Hey, I spell checked it too!