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DeepTech

Does anyone know how much depth will be lost when...............

A

Anonymous

Guest
going to a smaller coil in a trash laden site? I will be using a Tesoro Bandido II uMax, replacing the original 8" brown coil with a 4" coil. I just did an air test and it appears to be approximately a 50% drop in depth. I do realize that there is the possible halo factor associated with the target that is in the soil.
Is there any standard rule of thumb on how much depth you will lose by going to the smaller coil?
The site that I will be detecting is an old Boy Scout Camp dating back to the early 1940's and was last used in the late 1990's. There are lots of iron trash, some pull tabs too! I want to try the smaller coil because I feel that some good items are possibly being masked by the trash items.
One last question, do you think that I should be using the Tesoro 7" coil instead of the 4" coil in dealing with the masking affect of the trash items?
Appreciate any advice given, please have a great day! Kelley (Texas) <img src="/metal/html/smile.gif" border=0 width=15 height=15 alt=":)">
 
Kelly, I don't think you'll lose 1/2 in the ground
with the 4" coil. If time isn't a factor, try the
7" first, work it, and then go to the 4. I worked
a site hard with a 950 coil and then went to a
4 X 6 dd and it was like starting all over again.
Take it slow though. Best to you, Richardntn
 
The Boy Scout Camp is on a ranch down here, and I have hunted it several times these past few years. It has always been a difficult site because of the iron trash.
I was concerned because of loss of depth, some of the coins found were at 6" to 9" deep. I have never found a coin deeper than 9" and this is probably due to lack of experience on my part.
You are probably correct, the 7" coil is probably the best approach at this time, then the 4" coil if needed. Thanks for the information. Please have a great day! Kelley (Texas) <img src="/metal/html/smile.gif" border=0 width=15 height=15 alt=":)">
 
I use a 7" on my Cortes or Eldorado most of the time.
I can see little difference in depth between it and the 9X8, with greatly improved target separation.
I also use the Cleansweep coil often being only 3.5" wide it works through trash very well and depth is close to the 7"(maybe 1-2" less in Iowa soil).
What I would like to hear is how the new 5.75 UMax coil compares to the 7" for depth?
It will be a few months before ground thaws and I can try for myself.
 
Bandido II uMax detector? How about the Vaquero or Cibola? Please have a great day, and try to stay warm up there in the north country! Kelley (Texas) <img src="/metal/html/smile.gif" border=0 width=15 height=15 alt=":)">
 
Kelly: I never thought about the confusing part of that post <img src="/metal/html/oh.gif" border=0 width=15 height=15 alt=":O">
Since The Tejon/Cibola/ and Vaquero & LST operate on a higher frequency the 5.75 coil for them won`t work on the umax machines.
However and many may not have noticed this.
Tesoro changed the Compadre to a 5.75 coil and now list that coil available as an accessory coil for the uMax series. It is the third listing in the uMax Coils. Since I had the CSC I had never seen a need for a 4" coil. But if the 5.75 has close to the same depth as the 7"( which I have been told is true on the Compadre) then that does interest me.
 
Ed: Have been having Computer problems at home.
Spyware stole my computer and have not gotten it back up. So have had to pop in from work on occasion.
Been doing fine, Took a partial sebatical from detecting last summer, did not hit it near as hard.
Got distracted with another hobby, Shooting.
But am past the burn out stage and looking forward to digging a lot more come spring.
Am currently in a debate with myself as to keeping the Eldorado one more year or getting the Tejon.
 
Both the Cortes & Eldorado are close to thes numbers.
But Depth claims can be decieving due to location, so what I will give you are numbers I have repeatedly dug in the ground in Iowa using a dime for standard.
9X8=8", 8" Concentric= 7-8" CSC 3.5X18=4-5" On the 10X12 I can`t say I have dug dimes deeper than the 9X8 but signals were always louder. I still think it will gain 1-2" I just have not had that experience yet. But then I normally hunt in parks and schoolyards where there is too much trash to really give it a workout.
On a side note, both the CSC & 7" have repeatedly hit on dimes on edge in the 2"-4" range, indicating very good sensitivity to small targets.
I have never used a 4" coil, but understand its average depth will run just a bit less than the CSC.
 
you might want to go with the 4" and go real slow. A bigger coil would just mask the good stuff. John
 
With our mild soil conditions, using the standard 8" coil, I will detect a dime from 6" to 7" and a quarter from 9" to 11" in depth. I would have to say that the average coin is usually only 4" to 7" deep in the soil.
I have never used the 4" coil, but plan on doing so this weekend. I will let you know how I do with it.
Please have a great day! Kelley (Texas) <img src="/metal/html/smile.gif" border=0 width=15 height=15 alt=":)">
 
I will be using the 4" coil this weekend...have owned it for about five or six years, but have never used it. Please have a great day! Kelley (Texas) <img src="/metal/html/smile.gif" border=0 width=15 height=15 alt=":)">
 
Make sure you get the right 5.75 for the Bandido, like Monte said.
 
I called the local Tesoro dealer for more information and price...he should be calling me back in a day or two. I went ahead and mounted the 4" coil on my Bandido II uMax to use at that old Boy Scout Camp tomorrow, but it sure seems small for attaining much depth. I have never used this coil and will post results tomorrow night or Sunday. I suspect that the 5.75 coil may be a winner in trash. Please have a great day! Kelley (Texas) <img src="/metal/html/smile.gif" border=0 width=15 height=15 alt=":)">
 
Don't know about any "rule of thumb" but have switched back and forth from the 8" donut on a SSmmax a number of times and on an Eldorado as well. The 4" seemed to be good on most targets to 6" give or take a smidgeon, is very nice to swing and work thru thick weeds and brush and slips thru trashy areas quite well - my thought is that you will like it once you have used it. Pinpoints very well also. Dig till you drop,
Barber Bill , Idaho <img src="/metal/html/lol.gif" border=0 width=15 height=15 alt=":lol">
 
for the first time. I used it around some rock fire pits and trees at a Boy Scout Camp. The deepest coin I found using it was at approximately three inches in the soil. I did not scrub the ground while using it and probably held it about an inch above the ground. I had the sensitivity set as low as 5 some of the time. Naturally, it was great to pinpoint with.
Have you had any experience with the 5.75 coil that is now available for the older uMax detectors? I talked with Gene Scullion and will be ordering one of these coils for my Bandido II uMax from him this coming week.
I guess my next goal will be to buy a Vaquero or Tejon...and semi-retire my Bandido II uMax. Please have a great day! Kelley (Texas) <img src="/metal/html/smile.gif" border=0 width=15 height=15 alt=":)">
 
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