Today I took the 70 to a new spot where I have been able to find some wheats and newer silver. I decided to run the sens at 6 instead of the normal 4. It chattered just slightly more than the lower setting and I must have been in a wheat field. I dug 14 wheats with most being 8 inches deep with several approaching 10 inches. I got to believe the higher sens helped pucnch a couple of inches deeper. I had hunted most of the morning and no silver. I always figure I get one piece of silver for every 8 or 9 wheats. I had about 10 minutes of hunting left when I got a mercury dime that was deep! I was just about ready to leave and decided to make one last pass and that pass got me another 1917 merc from the 9 inch range. I always keep mental track of how many coins I dig compared to how much junk. I dig more than my share of questionable signals and I always figure 50% coins and 50% junk is good for me. When I use my C$, I seem to dig about 25% coins to 75% junk. To be fair, I use the C$ as my trashy site detector so the junk in those spots is overwhelming. Today I dug 35 coins and only 15 pieces of junk. Also, I found two rings and two tags . One of the tags is slightly bigger than a quarter and was an honest 12 inches deep. Todays spot proved to me that running the 70 at a sens of 6 makes the a deep detector even deeper. R.L.
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Hunted With Higher Sensitivity
- Thread starter RLOH
- Start date
christopher-ohio
Active member
you can get a couple on more inches with air testing and in the ground with a sensitivity of 6 on most CZ-70's. I 've only seen/used one that would not go over 4 without falsing terribly--that one was super tuned in Los Banos quite a few years back by their best technician-I just had the chance to use it for a couple of hours at an East Coast beach recently and I wasn't disappointed--Thanks, Mike!...HH
Chris
Chris
Chris, I have a bad habit of being set in my ways.Your last weeks post got me thinking that maybe I should start trying different things. At a sensitivity of 4, the 70 is a very good detector, at 6 it is as good as they get. I am a believer. I can't get myself to turn the volume up and lose the modulation, but I won't say never. R.L.
christopher-ohio
Active member
kinda like a CZ-70-3D. I do think one has to try a sens. of 4 and then 6 at an old site and see how the machine behaves and how strong each setting makes the deeper signals, even in all the heavy iron. I do like the 8 inch coil best since the depth meter is right on, even on the deep ones. I turn to volume all the way up and adjust with the headphones since I want to hear the very faintest deep ones which might be looked over at a volume 4 setting...those ones make me stop in my tracks and listen carefully with multiple small sweeps at various angles...I just use the depth meter in pinpoint to tell me how deep. With the CZ-70, you can almost close your eyes and detect without the meter just listening to the tones and the bounces-kinda Zen-like scanning every foot of soil under the coil. Just thinking about it makes me want to get out there unfortunately I've been working on our finished basement since before March...maybe another month or so till I can finally get out without guilt...HH
While many say put on 4 and leave there. I must interject CZ70 and CZ3D have different sens. parameters and most false a bit after 4 but previous CZ models were able to set up to 8 but have to admit never found an area where 10 was possible. Again all areas differ and some areas a CZ70 with sens. above 4 is tough to handle falsing wise, but in the long run the higher the sens. the more depth in most cases..In addendum all CZ's are not alike and some are just super tuned to give
extra depth....One wonders if the writings of some of the so called experts are indeed true or are they the victim of severe mineralized ground. Unfortunately we are not playing on a level field guys and gals...
extra depth....One wonders if the writings of some of the so called experts are indeed true or are they the victim of severe mineralized ground. Unfortunately we are not playing on a level field guys and gals...
christopher-ohio
Active member
all of my comments in this entire thread I might add pertain to the CZ-70 only. I have had numerous CZ-70's over the years for testing. The machine with the earlier serial #'s(10292...) in general seem to have a better overall build quality with reduced gapping between the faceplate and control box. The earlier ones also seemed a bit hotter to me when comparing with airtesting and in the field. Every new machine I've had from the factory out of the box would allow a max sensitivity of 6 for maximum depth performance without unacceptable falsing. The only one I've seen that wouldn't allow it was factory retuned.
The earlier models faceplate is ever so slightly different in color, a shade lighter, and the pushbuttons are slightly stiffer compared to later made serial #'s. Some later ones come with velcro straps for the coil wire. In the battery box, the little battery straps are sewn nicely on the ends whereas on the later machines they're not.
In general, the performance of the new machines out of the box is very consistent like a CZ-5 and unlike a CZ-3D, which I have had many, that varied the most. I have seen only one CZ-70 that was "out of tune"- a used one that I bought on ebay that read all dug IH's as relic(new tone)-everything else seemed OK except it also seemed to hit high coin and not bounce to iron when I tested it compared to other machines with a square nail on top of a silver or clad dime. I sold that machine since it bugged me that it wouldn't hit IH's right but I was probably stupid in doing so...oh well. On some of the later CZ-70's, the build quality was not as good with slightly crooked faceplates, slightly sloppy built coils, and the foam handle which was cut too long and split on the bottom right out of the factory box.
And I've even had a new Coin$trike right of the factory box with an actual large human hair behind the display on a later made machine near the end of the Los Banos facility
I recently purchased another new in box CZ-70 for back-up-to my surprise, it is a very early made machine from the serial number-it has a CZ-6a/CZ-5 old type knob for the ground balance instead of the usual smaller knob? It's funny since the later CZ-5's have the smaller knob too?...So it very may be one of the first made...it does work very well though with testing...I'll post a pic of it later...HH
The earlier models faceplate is ever so slightly different in color, a shade lighter, and the pushbuttons are slightly stiffer compared to later made serial #'s. Some later ones come with velcro straps for the coil wire. In the battery box, the little battery straps are sewn nicely on the ends whereas on the later machines they're not.
In general, the performance of the new machines out of the box is very consistent like a CZ-5 and unlike a CZ-3D, which I have had many, that varied the most. I have seen only one CZ-70 that was "out of tune"- a used one that I bought on ebay that read all dug IH's as relic(new tone)-everything else seemed OK except it also seemed to hit high coin and not bounce to iron when I tested it compared to other machines with a square nail on top of a silver or clad dime. I sold that machine since it bugged me that it wouldn't hit IH's right but I was probably stupid in doing so...oh well. On some of the later CZ-70's, the build quality was not as good with slightly crooked faceplates, slightly sloppy built coils, and the foam handle which was cut too long and split on the bottom right out of the factory box.
And I've even had a new Coin$trike right of the factory box with an actual large human hair behind the display on a later made machine near the end of the Los Banos facility
I recently purchased another new in box CZ-70 for back-up-to my surprise, it is a very early made machine from the serial number-it has a CZ-6a/CZ-5 old type knob for the ground balance instead of the usual smaller knob? It's funny since the later CZ-5's have the smaller knob too?...So it very may be one of the first made...it does work very well though with testing
...I'll post a pic of it later...HH