I may be getting the hang of the F75...

[tmanfromtexas]

Went to the park we hunted last weekend to see if there was anything left to find. We went to a different area and Greg thought the area had been back filled but we hit it anyway. WELLLLL he was right. After about 4 holes and 4 memorials I started noticing the soil was rust colored. We took a lunch break and came back to another area and started detecting. I was still flustered by the amount of signals I was getting. The place was laden with crap. Neither of us were doing to well. I decided to change the machine up alittle. Stayed at 6 on disc with sens around 70 but notched out the crap that was killing me. High nickels and tabs. Left low nickels and zinc pennies. The machine settled down quite nicely. I got a signal at 91 at 7 inches. I remember reading here that 90-92 were good target numbers, usually not iron so off to diggin I went. I got down to 7 inches and my probe hit the target. It was a pretty little 1903 V nickel. Called Greg over, did the happy dance and checked the hole again, off in the dirt was a penny signal, I probed and out came a 1880 ( I think) indian head, my first. I was ecstatic. I couldnt believe that those two came out of the same hole with a reading of 91. Checked the hole again and it was all cleared out. THATS when the light came on. Since the VDI numbers are separate from the tones, I finally got it through my thick skull to watch the depth meter along with the tones. Once I started doing that things got clearer and the coins started popping out of the ground. Greg got a hit on a dime at 7 inches. It was jumpy on mine but it showed 8 on the depth meter. He decided to pass it on to me and sure as I am sitting here typing that dime came out at 7 inches. It was clad but it gave me more info regarding the VDI numbers as they were jumping from 65-80. I can live with that on deep coins, because they are pretty good on more shallow coins. I found a nice little sterling ring with TCI inside the band (dont know what that means so if anyone here knows I appreciate the info.) and what appears to be a navy button. The thing was in very bad shape but you can see an eagle with what appears to be a anchor with 13 stars. Sorry for the long post but I learned a few things that will make the machine even more pleasurable to take out. I added the pics of the crap, I found along with the coins and ring. Pics arent that great but you get the picture. lol
TMAN...

 

[Elton]

n/t

 

[Low-Boy/LCPM]

It is great to learn and have fun and save some history at the same time. As I look back at about 12 years of detecting and I see all the history I have found it feels great to have the skills to find old coins and relics. Now I have a nice collection of bottles and marbles. It all about finding the kid in yourself and letting go of the stress we have in our daily lives. Thanks to the F75 for allowing us to find even more targets and history...what will be next?

 

[tmanfromtexas]

I went to a school today that I did the test at last weekend. It is full of coins. I kept the settings I had yesterday and made one pass in an area that Ihavent detected before. I pulled 3 50 era wheaties out in a small area. I have never done that before at that school. My friend Greg hasnt either with his SE. These coins were about 5-6 inches deep. I also pulled out a dime that had several pieces of tin foil atop of it. It was found as though it was by itself. I started to work with detuning the pin point. I havent got it down yet to a science but when I did get it to work (60% of the time) I had the target down to a 2 inch square. That was sweet. My ace 250 will do that and that was one feature I love on it. I ended up digging 22 coins total in an hour with only 4 pieces of trash in my trash pocket.

One question on stat mode. Yesterday, when I tried it, it acted strange. At first it was quiet, no noise except when I hit iron. Then out of the blue it started making noise, like the pinpoint mode does and wouldnt quit. What was I doing wrong? Is it suppose to be sound continuously? If it is why did it run so quiet at first. Just wondering, cause when I get to a non trashy area I am wanting to use it. Thanks. TMAN...

 

[Elton]

n/t

 

[tmanfromtexas]

Elton, how does it suppose to work so I will know in the future. Is there always a hum? If so I can turn the volume down and go to town. TMAN...

 

[Elton]

I just don't use it.......because I really don't know how... Hows that for honesty !!!! All I know it's like being in pinpoint mode all the time...

 

[tmanfromtexas]

Since ALL my bosses are gone this week I will try and call about that. If I can find any info, I will pass it on. TMAN...

 

[bottlebum]

I just don't use it.......because I really don't know how... Hows that for honesty !!!! All I know it's like being in pinpoint mode all the time...

I had the same thing happen to me when I tried the stat mode. I couldn't get rid of the loud tone, no matter what I did. Needless to say, I didn't use that mode for very long.

 

[Elton]

heres my understanding..This mode is useful for finding large deep objects. Static functions the same as pinpoint but occupies another position on the interface..( just means it has a dedicated way to access it)...The audio signal gets stronger as the coil approaches the target. Unlike all other modes if you stop moving the coil the audio will not go away.....


It has four adjustments...

Threshold- retuning-audio pitch- sensitivity- and I say five including ground balance.

While holding the search coil in the air adjust the threshold to hear a constant hum..So yes you will hear a constant noise....
Expect to hear some random noise "Riding on top of" per the manual of the audio threshold.. Important...If you run silent you will loose depth......

Retuning- The audio threshold will slowly drift while searching in stat mode It is even susceptible to heat change shade to sun....audio will drift till the coil stabilizes. (Temperature) very touchy mode....When it drifts meaning rises pull the trigger back momentarily to reset... You will have to do this while detecting..


Suppressing Technique... Suppressing audio threshold
If looking for a known shallow object ( Large Object) Ie valve boxes, survey markers that type of stuff you will not want to hear Small shallow trash items.
In this case set detector up normally and reduce the threshold well into the silent mode.. ( Turn it down so you do not hear it) Search with the coil several inches above the ground...If junk is still being targeted reduce the sensitivity Then as you search raise coil 1 foot every so often and pull the trigger...

Set the sens high enough to hear some chatter or a slight amount of ground noise. If you do not hear ground noise you will not go as deep..If it gets too annoying, or ground noise is so high you can not hear target reduce sensitivity Such a downward reduction in sens actually improves depth..you will be able to hear the deep faint targets

If you do not ground balance when searching in stat mode most ground will produce an audible tone..Per Fisher some coils will not sound off and you will suffer depth loss..



THIS WAS A FAST STUDY BY ME AND i JUST THOUGHT i WOULD PASS IT ON TO TO TMANFROMTEXAS..hOPE IT HELPS YOU UNDERSTAND THE MODE BETTER IT DID ME...i WILL ALSO POST SOMETHING ELSE IF i GET PERMISSION

 

[Elton]

To: Elton
06/29/2008 08:33PM
Do a fast grab GB and check to see how close to perfect it is by pulling the trigger in p.p. and raising and lowering the loop. Generally you will be close but not perfect, and need to do a manual GB, again using p.p. until there is no change.
Will pick up targets, including coin size that are so deep neither disc or all metal motion can hit them.
This mode is the BOTTLE CAP KILLER mode. If you are in an area and having problems with caps that want to read high coin , go to Stat; move the loop toward and away from you several times. A cap will cause EXTREME spreads in TID, but a conductive target's numbers will stay the same.[If you sweep from side to side as normal in this mode, the cap will fool the detector.] Caps can cause spreads from the 90's to single digits. This method only works in Stat.
If you hunt in stat you need to keep the loop at the same height all the time, and periodically pull the trigger to re tune as there is no auto tune built in. Its a great sharp shooter in high trash areas as you can cut back on the sens. or hunt with the loop lifted higher than normal. Being able to move slowly, or hover above a target while watching the meter really goes together.


I did not write this it was passed on to me..I was given permission to post it......


.

 

[Elton]

n/t

 

[Tinfoil]

n/t

 

[tmanfromtexas]

Thanks Elton and Tinman. I will give this a try next time out to see what I can do. TMAN...

 

[Elton]

here is another opinion from someone who Pm'd me on the loud noise you experienced.

Jump to forum ...


Re: The loud sound Tmanfromtexas
From:
To: Elton
06/30/2008 05:44PM
Quote


Quote

was experiencing was not electrical interference, but a detector severely out of ground balance. You can experience this phenomena in both motion modes, when going to p.p.
[no attribution]




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[tmanfromtexas]

Thanks Elton for the additional info. I will re-ground balance the next time I take it out. TMAN...