Bottle caps & the 10.5 DD 7.5 khz

[D&P-OR]

Any more tips on how to "handle" steel bottle caps with the 10.5" DD 7.5 khz coil on the Xterras?-------Thanks, Del

 

[Hart-IN]

Most of the time a crown cap will give a bit of broken scratchy sounding tone and the ID will bounce 40-42 or 42-44. But, on occassion, you will still dig some because they will give a nice solid tone from all four directions and the ID won't bounce at all. Personally, I dig a lot of caps because you just never know...that scratchy sound could be a quarter on edge or more than one coin laying together in that hole.

 

[dlively]

I second that, got fooled on two today even with the 6" DD. Sometimes they give a signal as solid as a quarter.

Dave

 

[Dan-Pa.]

I find they just cover more ground when in the ground and shallow ones are easy to spot this way..Whether whole, bent or crushed certainly imitate high coins. but you can eliminate many by using the above tip....

 

[xwyokid]

I find that a 3KHz coil gives you the very definite broken, scratchy sound on caps. In public parks I will most times keep going. However, at the old homesteads I'm digging them

Most of the time a crown cap will give a bit of broken scratchy sounding tone and the ID will bounce 40-42 or 42-44. But, on occassion, you will still dig some because they will give a nice solid tone from all four directions and the ID won't bounce at all. Personally, I dig a lot of caps because you just never know...that scratchy sound could be a quarter on edge or more than one coin laying together in that hole.

 

[Trackerman]

7.5klz good coil .Those pesky bottlecaps are a bit hard to evaid because sometimes they give a clean tone.Guess just have to dig um just in case theres something good. Chances are its junk when broken sound usually but not allways .

 

[Wisconsin]

The 10.5 DD 7.5 kHz coil loves bottle caps, just like a Fisher machine?

On good solid hits do the sovereign wiggle and pull the coil back to you and just before the tone stops if the TID number drops to around 27 you will know it is most likely a bottle cap.

Also if you raise (lift the coil off the ground) the ID numbers will drop off on the bottle cap but not a coin unless go to high like a very deep coin at the end of the detecting range it to will sound in the iron range. Just a variation of the above trick, they both work about the same.

If a quarter is close to the surface you will be able to raise the coil about 8 inches and still get 42 but a bottle cap in the same position will drop to the 27 or lower at the same 8 inch height.

If you are not sure, dig it!

The above is what I do and it works for me, hope this helps!

 

[Furious T]

I dont have a 3kHz coil, so can only comment on the 7.5kHz. In Australia our steel bottle caps come in at roughly the same numbers as our $1 and $2 coins., i.e. 30 to 32. However the numbers for the bottle caps usually start jumping around and can go as low as 22-44 and as high as 36-38. This jumping around usually indicates bottle cap, not coin..BUT, sometimes the jumping around of the numbers can be caused by multiple targets, namely coins of different denominations, so I usually take my time to scan carefully, try to "size" the target and take note of the depth. I do this because sometimes the soils here can do funny things with $1 coins that have been in the ground for a long time, ie. numbers jumping from between 24 to 38. I guess it depends on where you are hunting and how easy it is to dig. e.g. about 18months ago I was detecting in wet sand at the beach, using my 10.5 DD coil and finding numerous bottle caps. Got another signal which was entirely consistent with the signals the bottle caps were giving and was tempted not to investigate. I'm glad I did because the target was a lady's watch with a metal band (not expensive, but still working). I'm reluctant to ignore any target, so how carefully you examine each and every one is up to the individual...sometimes it does pay to dig. HH Sapper