F75 Ltd W DST upgrade best setup

[WV62]

Just to clarify, this is my best setup and settings for coin and inland jewelry hunting. Also as most of you know I do a lot of air testing for comparison of coils and best settings for what I want to be doing when actually hunting. Also I am only testing equipment that I have for my F75LTD that I had upgraded with DST.

I have tested on a lot of different coins, but when it comes right down to it, I am hunting dimes and quarters and if while looking for those and I pass over something else like a half $ or silver/clad dollar I think I will find them as well.

My coils are the stock 11" DD, 10" concentric, 5x10DD for what I call my big coils. What I call my little coils are the 5"DD, 6.5" concentric and a NEL snake DD. I am going to make a call as to the 2 best coils for me. But that doesn't mean I will be putting the others in the trash. I will still us them from time to time depending on what I get into.

My best all around coil is the 5x10DD, on dimes and quarters in the BP processor I am getting the same depth as my 10" concentric and my 11" DD coil. So the target separation is about an 1" better on the 5x10 DD coil. The 5x10 coil kind of fits into the little coil group being slim and very good target separation, but has the depth of the bigger coils.

Now if things get real trashy I would opt for the NEL snake, it is running at about the same depth as the 5"DD and the 6.5" concentric, but has the edge on target separation. Now these little coils test so close that you could go with any of them and do about the same job.

For deeper coins I run my machine as hot as I can, I use the BP processor and the 5x10DD coil. I like to run the disc no higher than zinc pennies.
For clad stabbing, I run in the FA processor with the NEL snake. With his setup I like the sensitivity no lower than 50 and if I want the jewelry add to the sensitivity and lower the disc to at least taking nickels.

Hope that helps somebody,

Ron in WV

 

[doc holiday232]

Thanks for your extensive testing and sharing the results.

 

[REVIER]

What tone selection are you usually using or which ones mostly if more than one?
I have tried them all and like most of them....still can't quite get a handle on DP but I just need more practice.

For quick park sweeping looking for coins and jewelry, mostly not super deep, when I just want to move and listen and not watch the screen so much 3H and 4H are my favorites.

I have used 1F and 2F successfully, a favorite when hunting woods with lots of iron like horseshoes and horseshoe nails.

Lately, and most often nowadays when I am not using all metal which I also use a lot, I use monotone in disc, and usually with very low disc at that at 0 or 1 no matter what coil I have mounted.
I also use higher disc from time to time, up into foil to avoid that and even higher like you do to look for high tone higher conductive targets, but I found the range of behavior I can now notice with disc super low using monotone or in all metal, how much jumping up and down the range, high number falsing from iron and more target behaviors I would not see using higher disc has actually helped me to notice, find and recover more good targets than all the other tone choices.
It seems to me monotone is the tone choice that is least affected by EMI and is the most responsive out of all of them and maybe the deepest that can come close to or match all metal.
I have found a ton very deep using other tones and some of my deepest ever using 4H, but I just get the feeling I am finding more using monotone overall.
1F is pretty good too but listening to all the signals and the iron grunts can get mentally fatigueing for me...listening to just one tone is much better for my sanity.
A very busy and noisy way to do this in my trash and iron infested sites even in monotone since I get so many signals with just slight movements of the coil in most areas.
It took practice to train my brain, senses and muscle memory to move that coil really slow but over time I learned to listen close, watch the screen and efficiently notice good targets masked so well both shallow and deep.
In time this became natural and easy but it was sure not at first.

So many ways to do this stuff using Fishers, there is no right or wrong way...just your way that is the best for you.

 

[Mike Hillis]

I would agree with you Ron, that 5x10 DD coil is a great coil on the F75. I mostly run the 5x10 notched in for gold range targets with DP audio. I like the rich sound of the lower mid tones in DP. Makes every target sound golden

I like FA mode with maxed out sensitivity with the stock 11" Biaxial better than FA with the 5x10 though. Personally I'd never run FA with less than max sensitivity with any coil. I don't mind running sensitivity below 10 in any other process mode but FA kind of demands max sensitivity to get the most out of it.

HH
Mike

 

[WV62]

What tone selection are you usually using or which ones mostly if more than one?
I have tried them all and like most of them....still can't quite get a handle on DP but I just need more practice.

Revier, I use mostly 3, 3H, 4, 4H and sometimes I will do monotone. I have about the same problems with the DP tones.

I see Mike also joined in, I was hoping to get some real world hunting experience to go along the equipment.

Question about DP tone. When running DP is the audio and the meter tied together? So what you hear is what you see.
I am pretty sure the other tones are not tied to the meter.

If DP is tied to the meter is that a good thing or bad?

Ron in WV

 

[dfmike]

Thanks Ron. Does the Nel Snake give you about the same target ID numbers for a given non ferrous object as the Fisher 5" DD sniper coil ?

 

[WV62]

Dfmike, I really don't see any difference in ID numbers from the 5" DD.

 

[jacco]

I've been using DP a lot for park hunting in parks where there's a lot of pull tabs. The DP tone goes from a grunt tone to a 'good' tone just above the square tab. The older round pull tabs, sound good as well, indicating you can discriminate on sound quite good using DP. When you have a tone that doesn't change in pitch too much, you usually have a good target. Also the high tone whispers can indicate deep coins or silver rings. Have been using it with FA, DE and JE processes. Works very well in all these processes, you just decide on which process depending on the amount of trash.

I got used to hunting in DP pretty quick and found several gold rings and lots of deep coins using this method.

 

[Mike Hillis]

Ron,
DP is the only audio mode that is tied directly to the visual meter readings. Jacco pretty much nailed how to use it. I didn't like DP at first but it has grown on me, or at least the gold range mid tones have. I love listening to them.

HH
Mike

 

[WV62]

Guys, I haven't able to get out and do any hunting for over 3 weeks now, the wife had knee replacement surgery and she thinks she can't do anything. LOL

So I set up my F75 for some more air testing last night, with the 5x10", DP tones, disc 0, Bp processor, sensitivity 99 and I pulled another 1" out of that detector. So on a silver dime I went from 10.5" to 11.5" that is kind of a big step.

So I just changed from DP to 3 tones and was back to 10.5". The high tone was dropping out at about 10.5 with 3 tones and went to a low tone up to the 11.5". The DP tone was holding tone up to the full range of detection 11.5".

I can see I will be running DP tones. I could here a tone change from a silver dime to clad, same thing for a silver quarter an clad quarter.

I bet you guys will be glad when I can't get out and do some hunting and stop this air testing.LOL

Ron in WV

 

[REVIER]

Ron,
DP is the only audio mode that is tied directly to the visual meter readings. Jacco pretty much nailed how to use it. I didn't like DP at first but it has grown on me, or at least the gold range mid tones have. I love listening to them.

HH
Mike

Ok....did not know this.
For the last couple of short hunts I have been using DP only....I will get good at this with practice.
Surprisingly I went over a couple of areas I have scoured and I mean a lot and scored a couple of goodies...
Two wheat cents, always a good find for me.
One was at about 6" and heavily masked by iron pieces all around it.

Disc at 1, thresh at -1, DE speed and sense from 70 but mostly up into the high 90's which is strange because at these same areas I have never had it so quiet at these settings before so I don't know what changed around here but I will go for it.
DP always seemed extra jumpy to me in the past but I used boost a lot to try to punch though my rough soil, this change to DE seemed to help quiet it down a ton....more of a finesse way that still gets deep.
The cool thing is even at 70 I was able to get to the 6-7" area on a couple of signals and I target that range in this rough soil so I might be using this DP stuff a lot in the future because I think I can reach even deeper than that.
Here 6-8" seems to be almost unexplored territory but target rich now that I found ways to unmask and recognize them and the difference between them and iron nails which infest most of my local sites.

I got good at using all metal and most of the tones, monotone is my favorite, and with slow coil movements look for and hopefully notice better targets but if DP is the one that is directly tied into the visual I hoped for an even better and maybe slightly faster reaction time than in monotone.
All I know is I did find these targets fairly easily, I was able to ID a lot more trash accurately, I was able to get decently deep and pick out the other stuff that were different from iron...both dead on iron and iron that falses into the higher ranges....most of the time, anyway.

Coooool!
This old dog learned a new trick, now to practice more and see how far I can take it.


Also WV62 I am changing my avatar.
Call me before you show up to these functions so we can coordinate and not clash in the future, please.

 

[WV62]

Always good to see somebody found a nice nugget of information out of a thread, but when a seasoned hunter finds a nugget it is time to pop the cork and everybody have a round. Looks like we got Revier off in the high weeds again.

Revier good luck with that DP tone deal.

I don't think our silver dollar avatars had the same date, mine is 1922 and I found way back in the 70's.

My wife has a meeting at church tomorrow and with a little luck I may get in a hour of detecting next to the church myself. If so I will be running the 5x10" coil and DP tones. There should be some silver in that yard, but so far all I have found is clad and a couple of wheat pennies.

Ron in WV

 

[REVIER]

Mine was a 1922 that I found last summer.
Ironically, I found it using DP, one of the very first times I ever switched into that tone choice and I was only trying it out for a few minutes.
A loud, clear, very sweet sounding solid high tone at 4" with a way up-averaged also solid 98-99 VDI in an area loaded with junk because I think it used to be a dump site.
I considered DP lucky after that, now we will spend some time finding out how lucky.

 

[marcomo]

Echoing what Ron said earlier, I am partial to the 5X10. And the results I got when NASA Tom certified my LTD 2 DST unit verified my thoughts.

Ground testing in his mild Florida soil came to 11.8" for the 11" coil, 11.4" for the 5X10 and 10.2 for the 5" sniper.

Only 4/10" verified difference in depth and the 5X10 separates so much better than the 11". Plus it can almost always be run at max sensitivity even in 9.0 without the extra shielding, whereas the 11" is more EMI prone.

Regardless of coil, it's a night and day difference in EMI suppression between this and my previous pre-DST F-75s.

I still enjoy the audio of my cz-3d and AT Pro more than the old school digital audio of the F-75, but this detector is easily better for depth in trash than the cz-3d, and better for depth anywhere than the AT Pro.

 

[WV62]

Marcomo,

I think we are thinking alike, the close to the same depth and the 1" better separation of the 5x10 is what made me think the the 5x10 was a all around better coil for my coin hunting.

My air testing setup is not good enough for me to get down any less than a 1/2", so I always round down to the nearest 1/2". I also think a silver dime is all that is needed for a air test target, if I can find a dime I should be able to find any larger coins.

Thanks for the NASA Tom's numbers, I will record those on my chart.

Ron in WV

 

[marcomo]

You're welcome, Ron.

FWIW for those who don't know, Tom comes up with his numbers using a clad dime.

How he gets within 1/10" with his measurements, I don't know.

 

[WV62]

I got about an hours hunt late yesterday and I was running the 5x10 with DP tones. I was in a yard where I have hunted before, I only found 2 pennies that I had missed before.

One thing I noticed, I was having a lot more trouble with EMI and the 2 good targets I found seem a little lower tone than when running 3 tones. So it is possible that I missed a few good targets when first starting.

Once we get some rain, I will take this setup to one of my old hunting spots and give it a little better work out.

Ron in WV

 

[nalc472]

here is what I like to use. Sens 60-70, disc 21, notch 1, FA, 1N (sounds). If U only want to find say coins go DISC 65. I found also that NEL coils reject nickel targets if U set DISC above 21. Just some ideas. In open field U can set to BP and have sens at almost 0-30. Put disc at 65 and U will dig good targets all day with the big size coils.