Hello F75 Fans

[Sunny Jim]

Hey and hello F75 owners.

Sure like my F75. I have the Sunray Probe and the small coil. I used to not like having more than one coil because I was lazy. What I was doing was missing the good stuff in the trash. I still am lazy and the small coil is so good that I do not like to take it off. I like to hit the trashy spots and ground that balances in the mid to upper 80's. I have hit targets that repeat solid numbers and read in at 12" with the small coil. I did not dig them. No one else knows they are there. Some day I will see what the stock coil says just for fun and dig one. The purpose of that trip was to see how well the F75 hits small gold on the ground.

How come no one talks about how good this combination works? I was going to get all scientific and compare the written field test results of the Gold Big II to the F75. For kicks I had two samples and the big one was 3+Grams. The small one was almost the size of a zero on your keyboard and thinner than a business card. I cannot measure that one at home, but it was in the Grain size.

I am not going to do the scientific comparison to the GBII. It finds flour gold and on-up. I do not have accurate distances to give you on how well it hit the small Grainer. It was 3-4" in all Metal with a + 2 numbers added to the ground for a total of 87. I had to be closer for some good numbers on the screen. Nothing lower than a 14.

I am happy with just two factory coils. The probe does it's job too. Sorry if I offended anyone by doing such a lousy and informal comparison to another machine.

Sunny Jim ( SJ)

 

[liquid1]

Hey jim I use the small coil all the time it works great.and finds deep small targets..I am a little confused about your comparison are
you saying the F75 is a good nugget shooter..I hope so I have some creek prospecting planned and will be using the F75 small coil combo
I dont have the sun-ray probe But its on my list to get soon..I think the F75 is a awesome machine it still amazes me with every hunt..james

 

[Sunny Jim]

Hey and howdy Liquid1.

Sorry I was not clear on the performance of the F75 and the small coil.

"I am a little confused about your comparison are
you saying the F75 is a good nugget shooter.."

No Jim, the F75 is not a good nugget shooter, it is an Excellent nugget shooter!

I was looking for a cross-over point that the F75 met and then exceeded the Gold Bug II. I was going strictly by a published report a magazine did on the Gold Bug II years ago when it was new on the market. I did not have the same samples so I will admit it was not and is not a fair comparison. The Gold Bug II is a gold machine made to detect the finest gold, much more finer than I want to dig for. I want 'pickers'. If I want to look for panning and dredging gravels, I would want a Gold Bug II to locate the fine stuff, but it will find the big ones too. The F75 should exceed the Gold bug II on depth detection with added creature features at some magic cross-over point of size/depth. My purpose in detecting GOLD is not to find all the gold, just the stuff I am willing to recover.

I have resolved to not continue the test because the little joker nugget I tested could be hit in the 3 to 4 inch range.
My head was swimming at the performance of the small coil while I tested the larger test nugget and I do not remember the results. The little grainer-joker nugget reported in at 24 at distance! That is a good number for gold. It hit at 3-4" with no ID, ID of 14 and bouncy then showed even better numbers and when I saw 24 I lost my mind. The real proof of that is I misplaced my samples and I cannot find them. I will just have to replace them!

I really do not care what the exact cross-over point is on the F75 compared to the Gold Bug II any more. The F75 will do with the small coil just fine for pickers. The big ones will take care of themselves. Someone else can continue the comparison. I do not own a Gold Bug II.

I forgot to mention my Sensitivity gain setting: 96.

The probe is a different animal. Made physically different and performs different than the other coils. I turn down the Sensitivity to figure out which way to go in a deep hole. It does not outperform the small coil, but is more a digging aid for me. The reason I called the small nugget a joker is because the probe did not detect it well, but that was in the house and maybe at a lower sensitivity setting. I figured if the probe cannot 'see' it very well, then the coil surely will miss it. Wrong thinking Shirley. I never tested the probe in the field on the same target because I forgot myself from the excitement. 24 is 42 backwards and is the answer to every question in the universe. So is the F75.
It slays small gold at depth and is lightning fast, target to target.

My tests were not very impressive as a scientific study but I am not a scientist. I am a metal detectorist and I found out all I need to know to be convinced at how the F75 performs. Does that answer your question jimbo?


Sunny Jim

 

[EZrider]

After the countless hours researching everything i could find on the F75 and the older fishers. I'm coming to the conclusion that the 75 takes the best out of all fisher machines before it and puts it into one unit. Its very interesting to read the manuals and reports from the other fisher models and see that the 75 can be setup to do the same thing. Some really good reading if anyone cares is download and print out the Fisher Intelligence written by Tom D. on fishers web site. Its like getting a free book with lots of good info.

 

[Sunny Jim]

Hi EZ!

Hey and hello.
Can you post a link here if you have one on Tom D's lit?
That is an interesting insight you have made. I have never had a Fisher product before but it seems many have crossed over a bridge Fisher made in design and function. I have my 75th full page ad saved that fisher published because there is some real pioneering from the old man.
good to meet you.
SJ

 

[liquid1]

Yep you answered my question jim..heres a few links to what EZ is talking about..check out the forum..
http://www.fisherlab.com/hobby/documents/DankowskiIntelligence5thed.pdf
http://www.dankowskidetectors.com/

 

[Sunny Jim]

Thanks Jim-Bo
Nice to meet you too. Thanks for the links. I will look at them today.


The small test nugget was really more like a large flake if that helps anyone interested. Grain measurements that small require some expensive equipment and I described it by size for an easier understanding of how big it was not. I guess the Gold Bug II can detect a nugget the size of a pin head. I do not mind passing those up unless they are massed and that would require a different recovery method.

pick'n and grin'n

Sunny Jim

 

[EZrider]

Jim if i may ask, whats the VID number that the gold is comming up as?

 

[liquid1]

Good question EZ..and what settings will work best..Im thinking all metal/stat or JE mode with sense as much as posible..Jim I will be Hitting some mtn creeks soon..Trust me if I hit gold Nuggets or slivers my wooohooo yell will be heard from all over..james

 

[Sunny Jim]

OK. My notes, not gospel:

>EZ:
Ummmm, going from memory I think the lowest VID was a repeatable 14. More on that later. Numbers jumpy, trending up.
Then as I got a bit closer the numbers got better, with 24 being a good VID on the other design popular in nugget country. That is where I lost my mind and I was so excited that everything else was a blurr, but I did get a surprising '92' for a moment and I was no where near rubbing the coil, which I never did. I never rubbed my coil. That 92 is so weird, but who cares because it is not a good number for trash.

Settings:
>All metal
>+ 2 in manual Ground balance (for a total of 87) I read where some go 3+ numbers, to counter changing ground.
>max gain for sensitivity
>Small nugget slaying coil
>Samples wrapped in red tape.
***********************************************************

tested on quiet ground/ no targets

most other settings are factory. Did I forget anything??? no discrimination in JE mode. I run two modes. JE and all metal.

On the VID of 14: A bit surprised and very pleased. I would practice with the stock coil around ponds looking for gold and digging lead. Good numbers were a 6 and trending up to 20's. More if the mass was large. Try it on split shot and a 1oz with a brass eye. A 14 is a much higher VID and if it is repeatable, then that means,..... discriminate ALL iron. Does anyone understand what I just said? Not sure yet on that, fineness of gold differs. Can you imagine if the baseline for gold on ID is >10? I will be able to hear Liquid1 from here! A multi ounce would be in the way-high numbers. 92 is way outside of my known good VID range on another design by DJ.

Liquid1> Honestly I like all metal and need to get my head on strait about Stat. I will try it again but I need to get with the manual. I like JE mode but my lead tests in the yard on the same ground and hotter says All Metal is the knees of the Bees where the good stuff is. I try to keep it as simple as I can. I wanted a machine that wouldn't make me wonder if I was getting every bit out of it I can without a whole lot of mumbo-jumbo. It is easy to use and two coils is all I need ( not including the Sunray FX-1). I wanted a fast, fast, fast, fast, fast machine that was fast. I like probes for recovery and with sensitivity down on the FX-1, the little bugger could still use some padding (less sensitivity). I honestly think the the only disadvantage to the small coil is the ground it can cover, everything else is right there performing with the stock coil. As you know am not a science lab and do not want to go there Jim, HH. I did do some tests but maybe someone else could map out the distinct differences. After all, I lost my mind a week ago and I can't wait for some more field work with the F75. This machine performs on it's own terms wonderfully. Therefore, I conclude the machine is simple to understand and use to it's full potential with little brain work and equipment. What a wonder. Turn everything up as high as you can go and swing away! I do turn down the sens. at times but only for the probe. Before you get a probe a plastic scoop will be fine for finding fine gold in the dirt when passed over the coil.

What is in a number? Good numbers for a target that repeat. Good numbers that trend Up to better numbers. 24 is a favorite knee-knocker. A nickle is I think 5 grams in weight and will read as a 1/4 Oz. nugget. What ever rules you can come up for a nickle at distance and close will work for gold. Most Gold in the lower 48 is small. Very few big 1/4+ OZ nuggets. Fewer bigger than that. Lead comes in at lower numbers like 6 and trends up. Many have passed a nugget because it did not read a good VID. Rusty iron is a bugger and can give the same 'good' numbers. That is the rub. If you can get a grunt and strong confidence of iron, you got it licked all over instead of it, you. Pump the coil. Go dig trash till you puke. And above all KISS. Honestly Jim, if I could complicate something and over analyse it I would, I just adopted a new hobby ethic: KISS. I will consider 6 VID and higher (jumpy into higher) a good target unless there is a distinct ID for iron. Repeatable numbers are important. The higher, the better.

Do some tests pumping the coil on a target. Watch the VID and tell me what you discover.
I lost my samples for now and will start over and see how the stock coil performs someday.
Good luck you guys. keep me posted on any new discoveries.
SJ