F70 questions

[Pastor bob]

This is my first few weeks with the F70 and I have a few questions. #1, what can I do to dig less beer caps? I am running the machine at 6 disc, 3H tone, 65 sens and minus two threshold. I have noticed the caps #'s tend to bounce around 70-85 a lot, but they still sound sweet. Second, do nickels generally lock on the 31-32 number? Only have about four hours on the machine and so far I like it. I am using a 12 x 8 NEL coil though. Thanks in advance.
Pastor Bob

 

[IBdiggin]

Hi Pastor Bob, congrats on the new F70. I am assuming you probably have a coil that likes bottle caps since they are so near quarter readings.. I'm not familiar with any coil other than the elliptical 10" so the bottle caps come in a little lower than those numbers for me. The fact they bounce in that wide of variation tells me they are trash rather than a coin. Careful though because if there are two numbers that frequently re-occur with no numbers in between, and with any type of separation at all it could be possible there are two coins of different denominations in the same hole. The trick is to pinpoint as close to the target and as long as possible. That is when you will get the truest reading and most accurate interpretation of their identity. Sometime a corroded clad dime will get a little jumpy in the 70s range but a quarter will seldom vary more than 2 numbers. You are using good settings for all around targets much like the conditions here in my soil. If it gets real noisy due to trashy conditions, to the point of lots of false signals, don't be afraid to back down on the sensitivity a little more. I have had to go down to 35 on some occasions when it was bad enough you could see pull tabs and foil on the top of the ground. You would be surprised how the F70 will still find things at 5 or more inches deep with those low settings. -----Hope this helps--------HH---IB

 

[Ayeti65]

Ok as far as the nickels yes they usually lock in around 30-32 most of the time, I dug some today that were 8-10 inches in moist sand and they must have been just on the fringe of detection, because they kinda came in a little bouncy and one even came in like 21-22 then got much better with the dirt off of it. I have also noticed on the bottle caps, the F70 loves them, yes they sound great , but they bounce around almost always, especially when you lift the coil a little, you should hear an iron grunt in them, I ran disc of 4 today and noticed that when I came at them from different angles they would give a grunt sometimes. Truth is I still dig alot of bottle caps because I can't stand thinking I could be passing something on edge or a strangely shaped ring. My experience shows me that all the great locked on target ids are good targets I would say 90 percent of the time. Then you get the ones that bounce and you have to make the call to dig them. I keep getting surprised every trip out with my F70 and I have had it for about 6-8 months now, and have spent many hours out with it, I am trying to push the machine more and more every time out and continually get surprised by the depth of this machine.

 

[knarfj]

I'm in the market for a 11 inch DD coil for my F70, but with full knowledge that along with a debatable increase in depth I will also be digging more iron/ferrous crown bottle caps. It's my understanding the it just goes with the territory when using said coil.

I'm presently using the 10 inch non DD concentric coil on my F70 and it's actually an anomaly for me to dig a rusty ferrous crown bottle cap. I believe it's because I run with a very low level of disc.1-5 and at those low levels a rusty cap gives out iron grunts mixed in with positive tones, were a quarter has a clean solid tone and no iron grunt. The confidence meter also plays a big part also. I find this to be true in my ground with caps that are less then 4-5 inches deep.