Find's Treasure Forums
Welcome to Find's Treasure Forums, Guests!
You are viewing this forums as a guest which limits you to read only status.
Only registered members may post stories, questions, classifieds, reply to other posts, contact other members using built in messaging and use many other features found on these forums.
Why not register and join us today? It's free! (We don't share your email addresses with anyone.) We keep email addresses of our users to protect them and others from bad people posting things they shouldn't.
Click here to register!
Need Support Help?
Cannot log in?, click here to have new password emailed to you
F75 Who "works into the noise" ??
- Thread starter WTnFred
- Start date
I work through the noise all the time. You get used to it and when a good signal hits, it jumps out at you. I look at the "noise" as backgrand noise. Takes some practice, but when you are after the deeeeeep stuff, that's what it takes. I relic hunt and run in 0 disc, with 2 tones. unless it's loaded with iron, then I go to 6 disc and one tone. That's the best set up for getting the closest to unmasking targets in heavy iron.
keep on diggin'
jimmyk in Missouri.
keep on diggin'
jimmyk in Missouri.
I'm sure you have seen many posts talking about getting a little extra kick of sensitivity putting the disc either high or below 4.....
I run both my F75 & T2 as "hot" as possible...... sens. 90's, disc below 3 for many reasons......(& endure chatter or "ear fatigue" like some folks just can't handle). But, many of my sites go back to the 1600's, and are in the woods. So, were talking well over 250 years of leaf litter pushing desireables like small coins, buttons, etc to depths many units can't get a good ID on. Often we hear blips like iron & you gutta wonder if that was a goodie just out of range of the VLF units ID. We know there's more there like tiny, thin 1/2 Reales, & Tree TwoPences.....but they could be 18" deep or more.......
So, I have been returning to "hammered" sites and running with a boatload of chatter I can pull out lots of new things that just plain didn't ID right or give a repeatable signal with disc say on 20. Some guys I hunt with say they can't stand that much "noise"......but it's getting me to new things, so I have become used to it & consider it like a threshold now. But, many would call it just a headache & too much watching of the numbers. I turn my headphones way down, or if in deep woods, roll with no phones......
Now that I'm getting over the Lyme, I'm anxious to get back out to one of these places with the F75 LTD to see if that can get me an even better ID on some of these hundreds of "blips" that are around every Colonial cellar hole. It should be fun (although if it's not deer ticks, it's deer hunters now)
I'll leave you with this video again that features the "chatter" (T2 on this hunt) with the settings of 99 & zero disc......
HH, Bill
[video]http://www.youtube.com/watch?v=ZpIkDJNaUqk[/video]
I run both my F75 & T2 as "hot" as possible...... sens. 90's, disc below 3 for many reasons......(& endure chatter or "ear fatigue" like some folks just can't handle). But, many of my sites go back to the 1600's, and are in the woods. So, were talking well over 250 years of leaf litter pushing desireables like small coins, buttons, etc to depths many units can't get a good ID on. Often we hear blips like iron & you gutta wonder if that was a goodie just out of range of the VLF units ID. We know there's more there like tiny, thin 1/2 Reales, & Tree TwoPences.....but they could be 18" deep or more.......
So, I have been returning to "hammered" sites and running with a boatload of chatter I can pull out lots of new things that just plain didn't ID right or give a repeatable signal with disc say on 20. Some guys I hunt with say they can't stand that much "noise"......but it's getting me to new things, so I have become used to it & consider it like a threshold now. But, many would call it just a headache & too much watching of the numbers. I turn my headphones way down, or if in deep woods, roll with no phones......
Now that I'm getting over the Lyme, I'm anxious to get back out to one of these places with the F75 LTD to see if that can get me an even better ID on some of these hundreds of "blips" that are around every Colonial cellar hole. It should be fun (although if it's not deer ticks, it's deer hunters now)
I'll leave you with this video again that features the "chatter" (T2 on this hunt) with the settings of 99 & zero disc......
HH, Bill
[video]http://www.youtube.com/watch?v=ZpIkDJNaUqk[/video]
I have been working through the noise for quite a while now. As mainly a coinshooter that hunts trashy sites, I found, besides some additional depth, that 0 disc. and a sen. setting into the 90's and 3 or 4 tones is the best setting for unmasking. I seldom experience the referred to background hum, but with these settings one will hear everything that is under the coil. Target noise and emi chatter are two different noise factors. When emi comes into play, which is seldom for me, then setting adjustments do have to be made. I have certain sites that have spots that my F 75 sounds like a machine gun going off. And while I do swing the coil briskly, I do so with a swing only covering about a 2' path in front of me and I overlap 80-90% and investigate every high tone tic. Even with as many good targets as I have dug with the F 75, this detector still continues to amaze me. HH jim tn
The hum is generated internally by the F75, so all EMI is not bad? I have always reduced my sense when this hum was heard, thinking EMI was strong and that I needed to tame the F75, NOT ANY MORE. Since this hum is generated by the F75 I would think it would almost always be at a consistent sensitivity setting in Disc Mode?
If you have any thoughts please share.
HH
Fred
If you have any thoughts please share.
HH
Fred
Internal hum is almost always caused by leaving "stat" chosen on the all-metal side and then switching back to discrim. If you leave "motion" selected and then change back, you shouldn't have INTERNAL hum.
This is the type of unusable "noise" I get at 1/3 of my inner city sites when operating below 6 disc - in this video the sens is at 60. Another 1/3 of the time is a dreadfully annoying but usable variation of this. When operating above 6 disc the depth is just not acceptable. This is why it doesn't get used much at coin shooting sites.
http://www.youtube.com/watch?v=8zJfOtTWj1A
This is the type of unusable "noise" I get at 1/3 of my inner city sites when operating below 6 disc - in this video the sens is at 60. Another 1/3 of the time is a dreadfully annoying but usable variation of this. When operating above 6 disc the depth is just not acceptable. This is why it doesn't get used much at coin shooting sites.
http://www.youtube.com/watch?v=8zJfOtTWj1A
I am going to take a whole new look at the T2 and F75. I sold my original F75 because a buddy really loved it and needed it for a hunt.
I watched your video and heard all the chatter. I read what NASA Tom said about running at 0 disc with a high sens and the 0 disc making a huge difference in good finds at a site already sanitized by an original F75... it was an impressive ammount of finds from the area.
This has my attention and I want all the information I can get about running the T2 and F75 this way.
I also need to know how the iron ID runs on the T2. I know it is 40 and below but I don't know what numbers in that range tend to be better finds.
I am excited about getting the new F75 LTD and using HOT at zero disc and max sens, as max as I can stand anyway.
I happened upon a site today, just doing my work. They were demolishing a site next door with huge CW potential.
Going to hit it this weekend with the T2 and E-TRAC. I'll tell more about it next week if I am able to hunt it.
J
I watched your video and heard all the chatter. I read what NASA Tom said about running at 0 disc with a high sens and the 0 disc making a huge difference in good finds at a site already sanitized by an original F75... it was an impressive ammount of finds from the area.
This has my attention and I want all the information I can get about running the T2 and F75 this way.
I also need to know how the iron ID runs on the T2. I know it is 40 and below but I don't know what numbers in that range tend to be better finds.
I am excited about getting the new F75 LTD and using HOT at zero disc and max sens, as max as I can stand anyway.
I happened upon a site today, just doing my work. They were demolishing a site next door with huge CW potential.
Going to hit it this weekend with the T2 and E-TRAC. I'll tell more about it next week if I am able to hunt it.
J
definately let us know if you come up with some goodies........& glad you got something from that video. I should probably pin it to the top of the Tek forum....although if everyone starts using these "hot" chatter settings like that there might NOT be much left in the future 
HH,
Bill
HH,
Bill
The key difference is that I'm far into the forest & miles away from any of that "city-type" interference. So, I can run wide open. Even hunting someones yard with those mega-hot settings is often a problem as they have all kinds of electronics going in the house that really affect high gain units......
A cell phone on in the pocket is also a no-no......that's another type interference that really can mess with a sensitive detector like the F75. I always turn mine off & can see/ hear the difference....
HH,
Bill
A cell phone on in the pocket is also a no-no......that's another type interference that really can mess with a sensitive detector like the F75. I always turn mine off & can see/ hear the difference....
HH,
Bill
My issue has always been that a $1000 detector should grab me industry comparable depth on a dime. If you set your disc at 6 and your sens to a low enough level to quiet it, well, I wouldn't post the actual depth you get, but suffice to say Fisher has other models that can do much better in the parks.
Sensitivity in that video is 55 - and it doesn't matter because it's still flipping out at 30. Try going below 60 and see if you're getting a $1000 detector type of performance. I'm in a city park about 1/4 mile from the road. It's the third video in a series of five that I'm hoping to splice together (with shots of the surrounding area) and send to FT.
go-rebels said:
Sensitivity in that video is 55 - and it doesn't matter because it's still flipping out at 30. Try going below 60 and see if you're getting a $1000 detector type of performance. I'm in a city park about 1/4 mile from the road. It's the third video in a series of five that I'm hoping to splice together (with shots of the surrounding area) and send to FT.