F75... disc=6; 1 tone... interesting...

[jbow]

I have read here and there about using the F75 LTD or regular with disc=6 and 1 tone for hunting iron infested sites or hunted out iron infested sites or just plain hunted out sites...

I finally grasped why. I cannot claim credit, I was reading some reviews and someone explained it.. that helped, laff.

Anyway the thing is this... if you set the disc under 15 and use anything other than one tone the detector defaults to disc=15 because all the signals in the iron range, 15 and under will give that low iron grunt. Well, now I see why I need to use one tone if I set the disc below 15 and expect to see better results.

It makes sense. I have not tried it... I think I got some food poisoning over the weekend.. (you don't want to know).. but I will be trying it. What I expect is this: If I set the disc=6 (or 7) and tone=1, I should get signals for everything 6 or 7 and above while getting no signal on anything 5 or below... which means anything heavily masked by iron should respond. I guess if a site is infested with a particular iron, like cut square nails, one could setthe disc to just remove them and accept everything above. I have just the place to try this out. I have not used it much because I didn't understand the why... and I hope this is correct, it seems to make sense that anything other than one tone would default tones to disc=15. I suppose if I use 2F or 3 tones and set the disc on 6 I would still hear a tone on a target with a TID of 10 but I would likely ignore it as iron.. and it may well be iron but this will at least warrant a little more attention and investigation of targets. I think it would be the same with the T2 and a setting of disc=21 and tone=1. I think the Omega-8000 would be disc=16 and tone=1 but I am not sure, I will find out. I know that the O8K has an iron range that runs up to 40... I think.


So... what do you think? Does this make sense?

Julien

 

[jim tn]

Yes, the 6 and 1 does really work. And, I think it is disc. 16 and 1 on the Omega, as you mentioned. Hh jim tn

 

[jbow]

Thanks Jim,

I can't wait to get out and try it. What about nails? I can tell a full nail but I am sometimes plagued with cut square nails about an inch long and they wont double beep. When you use the 6/1 setup do you ID the common iron and ignore it or what? Can you give me any tips from your experience?

Thanks,

J

 

[jim tn]

I only have a couple of bad nail infested sites, but I pretty much ignore the common iron and listen for the kind of cleaner zip, zip. Watch the vdi and look for the numbers that could indicate the kind of targets you want to dig. That set up is really good for unmasking, but takes some work. HH jim tn

 

[jbow]

n/t

 

[gmanlight]

Funny while i have tried this setting before its been
a while . Get caught in a comfort zone and space out
Have to give it a spin.

 

[Cal_Cobra]

This was the setting that Tom Dankowski found to have the best iron see through. Here's a cut & paste of the article he wrote describing in detail why disc 6 and monotone work best when hunting in iron infested areas (well worth the read):

F-75 Peak Performance - Disc 6 & mandatory monotone relic hunting justification
Intelligent Hunting Advice by Thomas J. Dankowski

When the F-75 is placed on a
Disc setting of 6 and monotone,
this set-up configuration allows
(under MOST circumstances) the best iron
see-thru ability in locating non-ferrous
targets in areas that are loaded with
ferrous (usually nails) targets. The older
the site, the more nails will be present and
subsequently, the more good targets will
be masked. Most detectors will shutdown
under these scenarios. The F-75 (and the
T-2) are the only detectors currently
available on the market that begins to
tackle this type of extremely common
scenario with some unmasking success.
With F-75 Disc on 6 and monotone
audio, the moment you invoke a different
tone option, say 2-tone, 3-tone, 4-tone,
etc., the audio portion of the Disc, even
though Disc is set on 6, will instantly
become a Disc setting of 15. What does
this mean? Any target that is between a
Disc level of 6 thru 15 will now audibly
report as a low tone (iron tone). BIG
PROBLEM for a multiplicity of reasonings.
Any target that is ABOVE a 15 VDI reading
MIGHT report a higher tone depending on
what tone option is invoked. Most folks do
not dig iron and most folks WILL miss
masked non-ferrous targets when
multitones are selected. To explain, I will
use an example that happened to me. I
recently recovered a badly masked Barber
dime. When I first detected this severely
handicapped dime, the F-75 was in
monotone, Disc 6, PF and Sens on 99. In
monotone the dime AUDIBLY sounded
good. I was going to dig this target but the
VDI was terrible. It would/could NOT lock
on to anything close to resembling a highly
conductive piece of silver. I then invoked
2-tone leaving ALL other settings alone.
Now the dime was constantly audibly
reporting as low-tone (iron-tone) even as I
rotated my body around target. The VDI
was jumping all over the board, but mostly
in the iron ID range. I made the decision
to NOT recover the target, primarily due
to low iron-tone and walked away. Several
hours later, I decided to go back and
recover this target (and MANY other
similar responding targets) with F-75 back
in monotone. The results were one 2

 

[jbow]

and ask questions if I don't completely understand something. I am interested to see if this will unmask as well as the ET... i'll be afindin' out soon.

J

 

[gmanlight]

The F75 runs independent VID and TID
On basic targets thy match up or some masked targets
one or the other may report depending on settings.

 

[BuckeyeBrad]

and this will only be pertinent to a similar site that I'll refer to. I have a site that has somewhat normal ground phase readings (65 to 80) but the ferrous mineralization is varying from medium to high. No matter what the Fe3O4 reads in that mentioned range, non-ferrous targets usually read as full time ferrous or mostly ferrous with an occasional non-ferrous bounce. This pertains to any target deeper than about 4". MOST of the cut nails and nails short enough to not double hit read 8 to 11. MOST non-ferrous targets read 1 to 6 or 12 to 15, and more often than not, THE FORMER. Think about that for a moment and you'll figure out that at least in these conditions, disc 6 alone will be detrimental to making desirable finds, regardless of the tone selection. I know this is probably an exception to what most have to deal with BUT you at least should be aware of it. J, you've been around long enough to know that someone Else's settings may well not work well in the conditions you encounter so while you should try 6D/1T, just be aware that it MIGHT NOT be the end all cure all by any means. The key here is that once you've been on a site long enough to see where the undesirable trash items fall out and you're comfortable in making that bet for all additional time spent at that site, you need to pay attention to and have your detector set up to accept all else or depending on your intended quarry.

 

[jbow]

I will spend some time checking where the cut nails hit. The ones i've dug have given a higher TID using various machines. I will try digging some various iorn signals in the 1 to 15 range to see what is going on... I've ignored all small iron signals, i've dug some of the larger ones and some have been desirable. Flat iron always fools me on some machines. Clear non-ferrous signals have become rare except in a couple of areas that are littered with modern trash. I'm still looking for a rather large carat diamond ring that was lost there and in a particular area... I am guessing that it is masked, it is what was at the time a garden but is now lawn.

BTW, did you use a V3 to get the ground phase?

This ground mostly reads 0.3 on the Fe meter.

Tony (from Orlando) came through a couple of weeks ago and I took him over there. He said he had a new respect for what other have to deal with. He brought an ACE-250 and a CZ-7. The ACE would not work there at all. He used the CZ for a it then used my V3 some with the 8x6 coil. We didn't find much but we had fun. I found another small carbine type bullet and I think he found a nickel but I am convinced that there are still some good targets here. I recently found a whole Burnside, it was broken but the pieces were all there, it is the only whold one i've found there... so I expect some more plesant surprises. Maybe i'll feel like getting out there for a bit today or tomorrow... been a little sick since Sunday AM, nothing serious. I think I ate something bad.

Thanks again!

Julien

 

[Scully]

You indicated that "non-ferrous targets usually read as full time ferrous or mostly ferrous with an occasional non-ferrous bounce". Have you experimented with Disc setting of 6 vs a lower setting? In other words, if you set the Disc at "6", would you NOT get the occasional non-ferrous bounce, but WOULD get it at settings below 6? You have opened up a whole new area to explore! Dang, this machine continues to amaze and surprise me. Thanks for posting.

Scully

 

[BuckeyeBrad]

Believe me, I've tried everything and the simple truth is these ID characteristics just are what they are at this particular site. With the 75's, if I'm at a place where I choose to hunt in disc, I almost always run at D6. Of course I usually defer to AM at this site I mentioned instead of low or no disc. It's just a matter of being set up to hear and recognize those abnormal ID's. My one buddy that I told you about with the health problems is a stubborn ol' boy and he pretty much refuses to hunt in am or disc lower than the cut nails. He's every bit as good a hunter as I am and he virtually always gets a lot less than I do and I'm comfortable in assuming it's because I can hear those super low ID's and he can't. I'm really looking forward to the crops coming off so I can try the GBSE there and see how it handles that ground. You'll be the first to know whatever happens with that!

 

[Scully]

That little detector is a killer in bad ground, and runs quiet as a mouse! I pulled one for personal use, but I dont have the bad ground here like you do. But I travel some and this will be the machine I take now, knowing it will handle any kind of conditions I might encounter.

Best of luck to you Brad.

Scully

 

[BuckeyeBrad]

Gene, like yourself, I just have a lot of faith in the engineering team at FT. Every new release of theirs, besides excelling for its design intent and price point, quietly (I think the sneaky little devils probably just want to see if we can recognize and appreciate it!) introduces something special due to innovation, which by my personal definition means something more than "a tweek". My instincts tell me this is definitely more than just a tweeked Omega with a different feature set and op frequency. I also think there's more to its ground handling abilities than the fact that it comes "looking through" a 5" coil. Let's be honest here. For A LONG time extreme power with speed with real time reporting meant some degree of chatty performance even to the point that detectors were intentionally "throttled back" somewhat by the variousl manufacturers so the consumer wouldn't have to deal with it and they wouldn't have to deal with the inevitable complaints that accompany that. That's obviously been evolving in the last what, 8 years or so. At least IMO, these GB's are the first to bring that peak like power and speed in a manner that is easily and more than (just) managable. VEERRRY COOL!!

 

[Keith Southern]

this soil calls alot of non-ferrous items ferrous....Thats the nature of the beast and you learn to adjust...
But thats the reason I wanted First Texas to offer a machine with the ability to set your own tone break because factory set parameters don't cut it in bad soil

but now the Gold Bug gives you the ability to hunt dual tone and adjust for less than perfect condition's...And maybe future models will incorporate this simple but priceless feature..


Glad other people are starting to see the problems we deal with in bad dirt on a daily basis...

Keith

 

[Neil]

Ive been using the 3H tones lately and will be trying this to see how it works. I mostly beach hunt, but masking is masking, even in the middle of a clean beach a piece of iron(we have alot of snow fencing at our beaches) can be hiding a ring so this might help.

 

[rick in mi]

You guys are making me nervous, I cancelled my order for the gbse,and orderd the pro. Then I bought a F75LTD [used]. Sounds like there may be somthig shared here in the softwear between the two,but wasnt this post centered around the F75??. Our can we share the same info,i am cool with it !!!!!!!