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Is the GB Pro better on gold than the F75?

L

LittleJohn

Member
Is there a comparison between these two models? I did a search and didn't come up with anything. I have a F75 and I plan to use on whites TDI on an upcoming gold nugget hunting trip. If the gold bug pro is more sensitive than the F75 to smaller gold, I may consider picking one up and leaving the F75 home. Any info is appreciated. Thanks

LittleJohn
 
In basic capability the two machines are in the same league, with the F75 in BP mode (if you've got that version) having the edge on larger deeper stuff in areas where BP mode can be used.

If you didn't have either, I'd say get the GB Pro, it's designed more specifically for gold prospecting and is easier to use skilfully. A machine you know how to use right always works better than one that you don't know how to use right.

However if you've got an F75 and know how to use it in all metals autotune mode, you don't really need a GB Pro, the F75 will do the job fine.

If you're new to beeping for gold (or for that matter even if you've been doing it for quite a while) I recommend downloading and reading the book "Gold Prospecting with a VLF Metal Detector", available on both the Fisher and Teknetics websites and stocked in paper print by some dealers.

Have fun on your gold prospecting expedition!

--Dave J.
 
Here is a test on a rivet size target at 7" deep. Look at the difference between the standard DE mode and the BP mode. Amazing




http://www.youtube.com/watch?v=-7ADQQVYum0
 
I was asking Steve Hershbach about the settings he used on his F75se to try and mimic them on my F70.

He sent me this link - Steve's F75 settings for gold

The JE mode on the F75 is similar to the SL mode on the F70. If you have the LTD, then boost for you comes into play
 
I think the key words here form Dave J.s post is "in areas where BP mode can be used"
This is not going to be in the majority of gold bearing soils I have ever worked. The G2 has to be cranked back to handle these soils or else it just overloads on me.
So at the lower gain levels you are forced to hunt at in these areas the Pro I would think may be more sensitive to smaller targets giving it the edge for gold hunting.
HH
 
From what I have surmised on both. They both will work. The GBP is more tuned towards gold hunting. Where the F75 is more tuned to be a great all-around detector.
In rodeo terms, the GBP is a bronc or bull rider, the F75 is the all-around cowboy.
 
For gold hunting, if I use my F75 I am going to have to go I to all metal mode. The other day I was doing some air testing and in disc mode it wouldn't see a gold ring or a good sized golden earring....with minimum disc ....switched to all metal and it nailed it loud and clear. Even then had some bounce on the numbers but a solid target and I woulda dug it. I'm having a difficult time trying to convince myself not to buy a Gold Bug Pro....very difficult to resist ....
 
LittleJohn said:
For gold hunting, if I use my F75 I am going to have to go I to all metal mode. The other day I was doing some air testing and in disc mode it wouldn't see a gold ring or a good sized golden earring....with minimum disc ....switched to all metal and it nailed it loud and clear. Even then had some bounce on the numbers but a solid target and I woulda dug it. I'm having a difficult time trying to convince myself not to buy a Gold Bug Pro....very difficult to resist ....
Click to expand...

I'm having trouble grasping that the F75 won't see a gold ring in an air test. Something may not be right. I have a F75SE on the way and have been using a T2SE. The T2SE hits super hard on low conductors. It nails nickels and gold rings. The F75 should be able to do the same.

tabman
 
From the "Prospecting" moderator - Steve Hersbach and his F75SE

The GBP is better tuned to gold. The F75 needs some "massaging to get gold.
The 2 great coils for gold on the GBP are the 5" "stock" coil, and the 10x5 elliptical DD. With the 11" coming in at an "arguable" third.

The F75/70 5" DD and the 6.5x4.5" "football" concentric are known to get small targets. The "soon to be released" 10x5" and the NEL 9.5x6.5 sharpshooter are the next size up. Which should still hit small targets but give a little better sweep coverage.

And most nugget hunting is done in "all metal", except were the trashiness of an area calls for some discrimination.

Steve's article prolly explains this best.
 
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