NULL Digital Readings

[Anonymous]

I was thinking about a hunt tomorrow and was messing with the Explorer and it came to me that some users many not be aware that rejected targets, nulls, still produce a digital reading for both ferrous and conductivity. I often use these reading in conjunction with positive hits to let me know what is going on. As an example if FE coins is shut down then there is going to be a lot of nulls. The digital reading will just about stay locked on 31/31 for the most ferrous iron.
Depending on where a pattern is set I compare the null digital reading to the postive digital reading to help id iron co-located with good targets. As an example a quarter next to half a horseshoe will give a null reading of 31/31 and a positive digital reading in the 27/28 area. The smaller the iron the higher the positive digital reading will be. This is one reason why I like Semi-auto as the digital readings are solid and provide a lot of good information. If there is a null we can look to see what is being rejected once we get use to the digital readings. If the conductivity is high compared to the ferrous reading then I dig a null digital reading. A good example is when using a silver and copper program and there is a coin just in the black area that will null then I can see that it is a coin from the null digital readings or even a deep coin or jewelry by the null reading.
A couple of folks have asked for some pointers on making a pattern so I will get that together and posted. I have a lot of information on my disk so will edit it so it is not so throw together. I type fast and often don't pay very close attention to what I am saying as read by another person.
HH, Cody

 

[Anonymous]

I have been detecting in ferrous tones with FE coins
open I have found it helps alot in the iron trash as you posted Cody. I have found a couple of interesting things I found if you use the coins program and open
fe coins then set the iron mask to -10 you can
pick up the first hit in discrim mode if it sounds kind
of good switch to iron mask and if its a good target
the tone will clear up a bit and the digital reading
will lock on better. this is reverse discrim but
it seems to work well I found a nice mercury doing this. I also got the chance to dig at a football
field that had been plowed for reseeding there was
almost no iron present so I cleared the screen
and cranked the sens to about 25 noise cancelled then
when I sweept the coil I got nothing but iron
hits I threw down a dime couldn't read it from more
than about 3 inches and it was iffy even then.
I started lowering the sens down with dime still
down when I got to 18 the iron sounds started
fadeing the dime got clearer at 14 there was no
iron sounds stable threshold the dime read very clear
to about 8 or so inches and there was no iron
sounds exept a nail every now and then.
I am asuming this was some sort of iron minerals
in the soil and I now understand that at most
of the places I am hunting this has been the
problem and not so much the iron. thought I would
post this finding to see what others think about it
or if they have encountered the same.

 

[Anonymous]

Great post and very good information and observations. We sure can have the sensitivity set to high for conditions. That is the deal to me which is to know what to use and how much when and where.
HH, Cody