Great F75 tip on hunting sites twice

[Bill Ladd]

I don't like running my disc over 15/16 as to risk losing gold or a valuable Colonial/pewter/military button....
But, I really like this great tip from First Texas' own Mike Scott that I decided to reproduce it here (without his permission ) Seems like a great way to cover all your bases & get both those low & high conductors...(even if it takes 2 trips to the site).
>>>>>>>>>>>>>>>>>>>>>>>>>>
Found 2 Bust Silver coins this weekend with this F75 and this is how.....I was running a low discrim in a 10X20 foot area I had pulled lots of stuff from and it was starting to get really skinny.
I was running at JE-84 sensitivity between 0 and 13 disc (I always try and change disc as I make different passes on a productive area) and 2+ tones. I do a low disc because many of the disintegrated pewter buttons will read real low. When I ran out of signals I decided to try a higher disc knowing that above 20 the detector gains depth I went to 24 disc and about 92 sensitivity. I knew at this setting I might miss some pewter. My first pass through the area I hit a DEEP musket ball. Halfway thru the second pass I hit a DEEP brass 2 pc "I" button. At the end of my 2nd pass I hit the 2 coins. All were awesome solid signals that did not come thru in the lower disc setting. Its the same with the T2 bump up the disc to past 50 or so you knock out a little foil-this is where you hit another threshhold for depth and sensitivity with the T2....M. Scott>>>>>>>>>

 

[Mark in NC]

n/t

 

[Tagamet]

Running that hot would either be chattery beyond belief or somewhere void of electricity. No?
Tagamet

 

[jim tn]

I tried those settings this morning and they were "chattery beyond belief," on a piece of ground fairly trash free, although, I was not to far away from a Naval base loaded, I'm sure, with electronics. Changing things up, though, seemingly would have merit. HH jim tn

 

[Tagamet]

I'll bet a Naval base has a fair amount of electrical activity (lol). And yes, tweaking things to get depth AND stability is part of the F75's fairly flat learning curve. I was just pleasantly surprised that the Perfect Storm of conditions had come together and resulted in some great finds.
Tagamet

 

[Bill Ladd]

That settings like those are really super "hot"....seems Mike endured some chatter & did it as a last resort to get to whatever remained deep in his little hotspot.....
Mega-hot settings like that really push the envelope, & I think Nasa Tom runs his even hotter. But, keep in mind these 2 fellas can be called pro's and have alot more hours on the F75 than most. So, beginners should probably shy away from settings like that until they get several hours of comfort under their belts....
HH,
Bill

 

[Mr.Bill]

A comment or two on wide open settings.

The last time Bill and I got out hunting, it was over a trashy revolutionary war battle site, next to power lines, and a military base a few miles away.

I ran the F-75 most the time in DE discriminate mode, at (0) zero discrimination, sensitivity settings at 90+, and 2 tones.

Proper ground balance is most important, and I had to remove ground targets in order to ground balance over clean ground. This is a must to do if you have trouble ground balancing.

I would also like to remind those of the ability of the F-75 to change frequencies. The F-75 has a choice of 7 different frequencies. With settings I described above, you will find it necessary to search amongst the 7 frequencies for the most quiet one to operate on.

Surprisingly there wasn

 

[Tagamet]

To me there's chattery that means the machine isn't stable and chattery which just reflects the impressive matrix of junk in the soil. Earlier this month I replied to a fellow with a chattery machine:

"Isn't the "simple" explanation that this super quick machine is simply reacting the way it SHOULD when waved over a trash garden? I'm not trying to be smart, but multiple beeps and target ID's all over the place accurately reflects whats there. No?
Tagamet"

This is what I was referring to when I said "chattery beyond belief". Being a relative newbie, I need to have the machine help me out by screening out some of that "space trash".
Hope this helps,
Tagamet

 

[jim tn]

You are right about chattery and chattery. One still has to be able, though, to interpret what the detector is telling you. HH jim tn

 

[Charlie P. (NY)]

[quote Tagamet]To me there's chattery that means the machine isn't stable and chattery which just reflects the impressive matrix of junk in the soil. Earlier this month I replied to a fellow with a chattery machine:

"Isn't the "simple" explanation that this super quick machine is simply reacting the way it SHOULD when waved over a trash garden? I'm not trying to be smart, but multiple beeps and target ID's all over the place accurately reflects whats there. No?
Tagamet"

This is what I was referring to when I said "chattery beyond belief". Being a relative newbie, I need to have the machine help me out by screening out some of that "space trash".
Hope this helps,
Tagamet[/quote]

Yes. There are times it just percolates and sounds like R2-D2 falling down a flight of stairs. You can get this just holding the coil still and two feet above ground. Surprisingly (to me) lowering the coil to just above the ground quiets it down substantially. I do this every hunt to set the sensitivity to THOSE conditions.

I just went out at lunch to "my" town park and was able to set the discrimination to 22 and the sensitivity to 90 in the jewelry mode. It was "tense" and gave a lot of falsing at the end of sweeps. I tuned down the sensitivity to 60 and the frequency to F1, and both helped a bit. I actually ended up hunting most of the 45 minutes in All Metal with the sensitivity at 90 and was amazed how well that mode works. Two quarters, four dimes, a nickel, two cents, one pull-tab, a door key on an aluminum shackle ring and a smushed bottle cap. In an area I have been hitting for two weeks. The quarters were shallow but surrounded with trash. I'd get six hits on a five foot sweep and dug the "78" spot. BEAUTIFUL seperation and response. Two of the dimes are '66 and were a Lesche blade (7") deep. I do miss the high tones of the "H" coin tones in Discrimination, though. The pull-tab I knew was no coin but the bottle cap I wasn't sure (red as dime - was only 2" deep or so). All Metal seems to ba a bit harder to pinpoint (at least I need more practice). I'm AMAZED how often I detected my Lesche while digging with the detector laid to one side and the coil two feet away!!!