Found solution V3i, Stock Coin Program using 7.5 freq w/8x6SEF

[nalc472]

I tried to set up a 22.5 program with the coin program modified using the 8x6sef. However, I noticed a problem. It would ring up silver dimes but did not recognize a quarter at all at 22.5 and sang at 7.5. . I found a solution. I set up a 7.5 program using the SEF 8x6 and the air test was great. I was able to set all unwanted tones to 0 and set up each coin by its own vdi. I was able to set separation to be able to tell the difference between a silver dime and clad. Set up separations for indians VDI 52-53, wheat VDI 69, and zinc 55. Nickels rang up well also at 19. The 7.5 freq seemed to offer the best of both worlds of the 2.5 and 22.5 freq by bridging the gap between low and high conducive targets. I think I am on to something. You should try it with the 8x6. Separation of VDIs from the silver dime was 76 for clad and 82 for silver. Quarter was 84 for clad and 85 for silver. Nickel was 19. I made clad vdis 240 and silver 255 tones. They hit it right on the money every time no waiver. This has not been tried in the field yet but tomorrow I hope to try and find out if it works. I have not found any silver quarters since July only silver dimes. I believe the 22.5 freq was my problem even when in 3 freq mode. If this works on the 8x6 I will set up the 10x12 sef also. It might be new breakthrough that might turn the v3i on its toes. Used only discrimation from -95 to 10. I was able to identify square tabs at 23 and pull tabs at 31. They hit right every time.

 

[daddyflea]

Maybe in air but in the Ground using the SEF 8X6 nickels hit higher than 19 a lot of times sometimes as much as 21 or 22. Zinc pennies usually hit at 54 not 55 I have seen them as low as 52 and almost as high as 60. Wheats are all over the place. Clad quarters usually hit at 83. Dont find a lot of silver but the last Rosie I found hit at 52. Dug it up and found a Buffalo nickle in the same hole. Sorry but if you are depending on the exact numbers you are going to be very disapponted. I think your system could be close if everything was laying flat but unfortunately air tests do not jive with what has been in the ground for 50 or 60 years.

 

[nalc472]

I will be hunting tomorrow. Will give a full report of if my program tweeks to the stock coin program will work. The main issue I found so far
is that the 22.5 freq could not hear the 25 cents at all no matter where it was located at the coil. a dime hit loud. Others should check
this out and see the problem with the sef coil for quarters in the 22.5 freq zone. Its like a blind spot on the 225 freq on the 8x6 sef My vdi numbers are based on the 8x6 sef on 7.5 freq only.
I get the same readings as as posted above me in 2.5 and 3 freq mode.

 

[undrpar]

My 6x8 sef won't respond to anything in 22.5 khz..the sef coil wasn't designed for the v series..unless you have the white 10x12..but I hunt coins and the 2.5 and 7.5 work great..

 

[nalc472]

I have the white colored 10x12 sef and it does work on the 22.5 freq. I will be using it today also to see how they both do with my new program modifications.

 

[daddyflea]

Mine hits Quarters and everything else in all three frequencies. Problem is it is not supposed to hit real hard in some frequencies. I forget which is which but that is the whole theory behind using three frequencies. Some hit Silver harder than others and the Blue line hits Gold harder. This is what gives me an idea of what lies below. I hope your system works for you but I have a fear you will miss a lot of good targets. Whatever the out come let us know about it. The V3i is not a Detector for a beginner that is for sure.

 

[Larry (IL)]

Setting up the V3i to what you want is half the fun but I hope you don't eliminate a lot of good finds by being too selective. If you are hunting for old silver, the worn thin coins will read well below what a newer, full bodied, coin reads. Some worn Seated dimes read as a penny or less. I dug a Half Dime yesterday and they read as a Zinc cent. As Daddyflea said, good targets will read all over the place depending on depth, orientation, mineralization, multiple targets and other factors.

Single frequency is fine but you paid good money for a multiple frequency detector, there are benefits to using it in three frequency. JMHO

 

[nalc472]

I am using the discrimantion feature the line fuction. Set the detector to reject up to 10. Zero audio all the tones I do not want. Visual reject on to not see the VDIs below 10. All numbers above 10 will show VDI number due to discrmination ends a 10+. Tones active for 17-22, 39 (flying eagle), 50-54 (Indian), 66-69(wheat), 70-94 for all silver coins and clad coins. No discrimiation notch settings at all just the spread of -95 to 10+. Should be able to see ever reading as they come up and not miss anything of value. This is based on running 7.5 freq on a SEF coil. VDIs are a little different on SEF coils except quarters which ring 83-85. Will build different program for my whites coils due to slight difference iin VDI readings and the 22.5 freq working better on whites made coils.

 

[daddyflea]

Here is my experience using the V3i and a SEF 8X6 Coil all three frequencies active using accept all signals 0 tone on rejected.

I am using the discrimantion feature the line fuction. Set the detector to reject up to 10. Zero audio all the tones I do not want. Visual reject on to not see the VDIs below 10. All numbers above 10 will show VDI number due to discrmination ends a 10+.

Tones active for 17-22,

This should get all nickles. Maybe could reject 17 and still get them.

39 (flying eagle),

No experience here. All pulltabs for me.

50-54 (Indian),

This gets most zincs but not all. Zincs as low as 52 and as high as 58.


66-69(wheat),

I call this the real penny range and have dug them from 60 all the way to 74.

70-94 for all silver coins and clad coins.

Never got a coin that read over 85 myself.

No discrimiation notch settings at all just the spread of -95 to 10+. Should be able to see ever reading as they come up and not miss anything of value. This is based on running 7.5 freq on a SEF coil. VDIs are a little different on SEF coils except quarters which ring 83-85.

My quarters have hit from 82 to 85

Will build different program for my whites coils due to slight difference iin VDI readings and the 22.5 freq working better on whites made coils.

Just my experience using this setup which to me is the best I have ever used. I do think a good Ground Balance with the detector locked on that setting makes a lot of difference. My ground balance is always questionable because I can rarely find a good clear spot and the V3i does not really show that it is in ground balance mode..

 

[Rob (IL)]

It is accepted practice that if you where looking for a target with a VDI of 19 you would need a spread of 5 VDI. For that 39 you are looking for you would need a notch of at least 37 - 41. Except for +95 I have no positive VDI set to zero. Too many factors cause VDI shift.

 

[nalc472]

There is no discrimination between 10 and 94 only 0 tones. So the spread of the VDI's is still in play. I have a flying one cent that rings at 39. I have no discrimiation before or after it. it rings in solid at 39. 0 tones before and after it. There is not resistance to the VDIs from 10 to 94. So today I am going to 1890s farm house. Will take pictures of my finds based on my new setup. Hopefully it will come out the way I am hoping. THanks for all the help. My program is a combo of all your post for months.

 

[daddyflea]

I went today and dug so many coins I am beat. I don't think there is much of anything old but some holes had 4 or more coins in them. Really good place. I will have to dig up all the new ones before I can get down to the old coins.

 

[Rob (IL)]

The point we are trying to make is VDI for a coin change with depth, soil type, angle of coin etc. I've dug many nickes that read 19 only after they are out of the ground. I get nickles out of hunted out sites because people are only digging perfect 19 readings. It is nothing for a coin to read 2 VDI higher or lower. At a 1890's farm house you should be digging ALL positive DEEP VDI.

 

[Blind Squirrel]

Rob (IL) is right. Especially at an an old sight it's a good idea to dig any positive signal. I'd hate to see you miss a cache of gold coins because you didn't get the "right VDI". At one sight, I dug a cache of coins and my total silver count was 34 plus nearly 200 wheat cents. Some of the nickles gave VDI's of negative 6 to positive 40. Why? Because of their close proximity to rusty bottle caps and/or rusty nails. All together, between me and my buddy, we dug 54 silver coins in a very small area. It took 3 visits to that sight to get them all but it sure was fun! Here is the link to my first visit.

http://www.findmall.com/read.php?66,2092308,2092308#msg-2092308

Best of luck and...

Happy Hunting!
Blind Squirrel