Thats it. time to get the 5.75 coil for the vaq

[hatpin]

Yesterday i hunted the strip between a sidewalk and a busy street with the Vaq ans stock coil. I've always been happy with that coil but this place was incredibly difficult to hunt. There was metal everywhere , mostly aluminum. It was usually impossible to separate targets. I resorted to heavy discrimination , something that I rarely do. I did get some stuff there. One silver Rosie , wheat cent , pocket knife and misc stuff. I think I could have done three times as good with the smaller coil.

 

[MarkCZ]

Now, the question,
5.75" Widescan or
5.75" Concentric?

I have both for my Tejon, but I've not got the change to use either yet.

My brother Ron, air testing both on small gold and the Widescan hit better on the smaller gold over the concentric. (I know air test doesn't always relate well to target in the ground, but it was an air test for an air test)
In my thoughts it would seem that the longer and much more narrow field coming off the coil of the Widescan it would work around trash better than the concentric??

Also, in my brothers air test these coils same to have as much depth as the stock 9"x8" which he was pleasantly surprised to find??

If you've not done so yet it might be good to do some deeper research on the two to make sure you get the one best suited for the task at hand, unless you don't mind buying two coils.

I've got high hopes for the widescan for jewelry.

Mark

 

[WV62]

Here is the full test results from the testing my brother MarkCZ was talking about. I have posted this before but here it is for all that missed.

Mark's brother Ron in WV

 

[tabman]

I took Monte's advice and got the concentric coil. It was great advice.

Monte posted something about how the concentric coil can hold its own when it comes to target separation (masking).

When I ordered my 5.75 concentric coil for my Vaquero, I got the same good advice from Rusty.

I personally prefer the concentric coil, because it discriminates better, it's easier to pinpoint with and it handles those ole rusty pry cap better.

tabman

 

[kaolinwasher]

Yes thats right you need a small coil , and you can see that a deep machine would be useless untill you cleaned up that 1st 7" of targets

 

[MarkCZ]

Monte posted something about how the concentric coil can hold its own when it comes to target separation (masking).

tabman

Maybe I'm over thinking this BUT! (here we go)

I have generally thought of "masking" as good targets below bad targets, and

Target "separation" as good and bad just close together in more of a side by side arrangement which is more about recovery speed?

So from that prospective I'm thinking what were talking about is target "separation" and small coils covering less area tends to put less targets under the coil at the same time, hence better separation, small coil, large coil doesn't change the circuits recovery rate and I'm thinking that small or large coils may not help much in what I'm calling target "masking"

So, in at lest theory the DD (widescan) coil has the same coverage per sweep as the concentric but would offer better separation because of the long narrow field of detection coming off the coil and pinpointing with any small coil is pretty darn easy, I mean if you get the target under the coil your within a 5" dia plug and any try at narrowing it down and your an easy 3". One thing that I found that helps pinpoint a target with DD coils is to cut a bit of a football shape plug (a little longer and more narrow).

Now, discrimination may be a different story, I have heard that DD's don't disc out bottle caps very well, but screw caps are pretty high on the discrimination dial anyway, so in high disc clad hunting I could see this really a problem, but if you looking at getting the jewelry then that's a different story.

Mark

 

[tabman]

Where's Monte when you need him to explain something?

tabman

 

[BarberBill]

It's my understanding that the widescan pattern will cover LESS ground side to side, but a bit more front to back (when not moving) and that the concentric pattern is more rounded, but grows smaller at depth, but will disc. better and MAY be just a tad deeper. I'm not really sure that any of this is that big a deal with a smaller coil like the 5.75.
BB

 

[MarkCZ]

This doesn't have anything to do with the Tesoro other than its a Double D coil, but on my Omega the double DD ID;s MUCH better, and is for sure deeper than the 10" Concentric, but bottle caps seem to fool the Double DD. But for coins even down to 8" the DD ID's them MUCH better than the concentric.

Yes, the pattern of the field of detection coming off the DD is heal to toe longer than it is wide, and the field of detection on the concentric is at best round to a little oval, so the detection field off from the DD is more like a narrow bar., so the heal to toe coverage is still 5".

Mark

 

[MarkCZ]

I'm pretty interested in this thread because If I could figure out for sure which one is best and settle on just one of the small coils I would move the other one, to me in theory the widescan would seem to be the better choice, but theories get proved wrong all the time.

Mark

 

[JB(MS)]

In a post on Tesoro's original forum, on the Tesoro website, a Cortes owner asked whether the widescan or concentric coils were better. Below are replies by both James and Vince Gifford. I copied them because there was a discussion on another forum.

"Stick with the concentric coils. Concentric coils are overall better discriminating coils. They are used mostly for coin and relic hunting. Wide scan coils on the other hand are designed to work in the heavier mineralization. The wide scan "sees" 30% less ground effect than a concentric, but does not discriminate as well. The wide scan may also affect the readings on your Cort

 

[John (Ma)]

Heavy iron areas (cellar holes) would mean widescan would be better???