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10.5" coil on the CS :thumbup:

M

Mike Hillis

Well-known member
The majority of my parks, schools and athletic fields are all new. Most were made by spreading about 3-4" of topsoil around so that grass would grow and there would be a green spot instead of a tan spot. Since these are just clad and jewelry hunting spots, ground coverage and target separation is more important than depth. Does the CS have the necessary features to excel in this type hunting?

Yesterday I put the 10.5" coil on the CS and proceeded to hunt a portion of a park and part of a soccer field. These are the same areas I've tried to hunt with the T2. Highly magnetic ground conditions with moderate to heavy iron mineralization. Very noisy with the T2 even at low sensitivity settings.

I had experimented with settings the night before and had decided on using a 250 setting (sens @ 2 and thres @-50). What I wanted was a 6" dime with a narrow detection pattern. Well it worked. I hunted most of the time at 250 and in the areas where the topsoil was thicker I bumped it up to 225. With Tracking on, everything notched in and iron disc at 99, I hunted in both all metal and disc mode. The 10.5" coil did just fine. I never felt like I needed to pick up my toysoro/cleansweep combo. I got decent separation, all the depth I needed and decent ground coverage (remember I'm used to swinging the Cleansweep coil over this type of ground). All in all I was very pleased. A number of dimes came up from 5" as did a very thin silver ring that id'ed as a large tab at a steady 18. Only dug two rusty nails until I learned to trust that negative number.

I decided to keep it at 225 as I liked the audio better at 225 than 250. I now have this saved in memory location 3 just for the 10.5" coil and these areas.

Final tally for the day = 68 pennies, 8 nickels, 12 dimes, 8 quarters, 1 thin silver ring, and 2 nice soccer pins and a bunch of alum trash I dug on purpose looking for a glint of gold.

It was a bit heavy toward the end, but it was still lighter than the Cortes/Cleansweep combo and felt about the same as the Golden/Cleansweep combo after several hours of sweeping. I'll try hipmounting later and see which I prefer.

I am very pleased with the performance.

Happy CoinStrikeing :detecting:
 
well as that sweeper setup I know you've been running for a while.:lol:

Just out of curiosity what pushed you in the direction of trying that? I would think that looking for better target sep. you would have aimed for a narrower coil liker the sweeper. I guess you kind of went against the grain with this experiment and found some interesting results.

Do you feel the C$ provides some settings/characteristics that are unique, to make your adventure successful? Or could this be replicated with say the Excel or Edge?

And that there was some digging! Good for you!

HH
BarnacleBill
 
Hi BBill,

Yeah, I was happy it worked as well as it did as I'm wanting one machine to do it all for me.

I thought the elliptical receive coil could provide a detection field similar to a DD coil if the settings could be tuned just so. And it doesn't do to bad for the shallow clad that my modern parks hold. I was getting complete toe to heel coverage on all the surface targets down to about 3" deep and I was able to keep it to about a 2" to 3" narrow detection window down the entire length for that range of targets. Once things got below 3-4" then the field length started dropping off but it also got narrower.

You can probably duplicate this to an extent with the Edge, but wouldn't be able to fine tune the width like you can with the CS threshold control. My testing the night before showed that the Threshold setting has a major affect on the width (as well as depth) with this coil. I could get a narrower width, but then lost my 6" deep dime requirement. So I kept the dime depth as primary and detection width secondary.

I didn't try it in the heavy trash or in my steel bottle cap infestations yet. So that is still an unknown. I'm pretty sure a 2" width is still too wide for these sites. I'm thinking that will require a more negative threshold and a shorter rod length. It may not handle my caps sites at all as most machines can't. I suspect I will still prefer the Golden/Cleansweep in those areas. But in moderate trash the CS/10.5" setup did just fine. In the lighter trash areas I actually preferred running in all metal and when the iron signals got too noisy I switched back to disc mode.

I can run the audio at 2 in all metal mode, but have to raise it to 3 in disc mode. Not as robust a signal in disc compared to all metal. Also forgot to mention I also had Averaging on.

By the way, it seems to do good with foil. I got a lot of +00 to +11 signals which is where most of my foil was dug at. I think with more digging a person could develop a really good gold setting. The audio is influenced enough to be helpful here.

Well, I was happy to be able to give a good report as my primary machine has to be able to do well in these areas. The 5" coil showed up last night so next Monday I'm going hunting in the heavy trash :hot:

HH
 
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