f70 ground balance question

[joey786]

Just bought an f70 and it won't GB below 90, I'm GB-ing in the all metal mode and following all the instructions, however, my f75 GBs at around 64. Am I doing something wrong with the f70 ? Your help would be much appreciated. Thsnks

 

[REVIER]

Just bought an f70 and it won't GB below 90, I'm GB-ing in the all metal mode and following all the instructions, however, my f75 GBs at around 64. Am I doing something wrong with the f70 ? Your help would be much appreciated. Thsnks

It should, unless there us a problem.
Do a factory reset and try again.

 

[joey786]

Just bought an f70 and it won't GB below 90, I'm GB-ing in the all metal mode and following all the instructions, however, my f75 GBs at around 64. Am I doing something wrong with the f70 ? Your help would be much appreciated. Thsnks

It should, unless there us a problem.
Do a factory reset and try again.

Thanks, l will try that. Should the f70 GB to the same numbers as the f75 or at least close to it ?

 

[REVIER]

Just bought an f70 and it won't GB below 90, I'm GB-ing in the all metal mode and following all the instructions, however, my f75 GBs at around 64. Am I doing something wrong with the f70 ? Your help would be much appreciated. Thsnks

It should, unless there us a problem.
Do a factory reset and try again.
Thanks, l will try that. Should the f70 GB to the same numbers as the f75 or at least close to it ?

Yes.
They are built on the same platform with the same core engine...the difference is in the programming.

 

[fjs440]

There have been a few times I went out and the F70 would ground balance at 90. Since I was used to using the F2, which is preset to something like 90, I would ignore it and start detecting. After using the F70 for five minutes or so, I would redo the GB and it would drop to a lower number.

I never did figure out why that happens and never really worried about it. The F2 preset GB always did a good job for me.

If your F70 always stays at 90 after using it for a while, then it may be sick!
__________________________
Fisher F70 w/Fisher 11” DD and NEL Snake Coil
Fisher 1280-X w/8” Coil
Fisher F2 w/4”, 8” and NEL Hunter Coil
Makro Pointer
Killer B Stinger Headphones
Garrett Z-Lynk

 

[joey786]

Thanks guys, well I did a factory reset and I GBd it down to 84.
That's about as low as I could get it but it seems to like being around 90. It works great though. I've had no other problems with it.

 

[MarkCZ]

The F70 may in some cases ground balance to the same number as the F75, but it may not.
The F75 has more processing going on,
different coils will ground balance differently too, you may swap coils and see how the numbes compare?
But, in the end I wouldn't concern myself with matching ground balance numbers between the two detectors.
Now, I would get concerned if everywhere you go the F70 ground balances at 90 like its doing the same thing everywhere you go.
Here is something I started doing to speed up ground balancing on my F70.
I turn on the detector and switch to bank 2,
Set up some low power settings like sensitivity at 20,
A low threshold like -5,
then discrimination like 5 (anything LOW)
then I ground balance in bank 2 then I flip back to bank one where I have the normal search settings.
Yes! the ground balance carries back from bank 2 to bank 1.
The reason I do this is because I don't need a lot of horsepower to cancel out ground effects!
I can use the lower settings to search for a clean spot in the ground, in discrimination mode,
then ground balance there, and flip back to bank 1.
Both banks will retain last used settings except for ground balance.
I wasn't using bank 2 for anything else.
This process reduces effects of interference during the ground balancing process, or it seemed to for me.

Mark

 

[joey786]

The F70 may in some cases ground balance to the same number as the F75, but it may not.
The F75 has more processing going on,
different coils will ground balance differently too, you may swap coils and see how the numbes compare?
But, in the end I wouldn't concern myself with matching ground balance numbers between the two detectors.
Now, I would get concerned if everywhere you go the F70 ground balances at 90 like its doing the same thing everywhere you go.
Here is something I started doing to speed up ground balancing on my F70.
I turn on the detector and switch to bank 2,
Set up some low power settings like sensitivity at 20,
A low threshold like -5,
then discrimination like 5 (anything LOW)
then I ground balance in bank 2 then I flip back to bank one where I have the normal search settings.
Yes! the ground balance carries back from bank 2 to bank 1.
The reason I do this is because I don't need a lot of horsepower to cancel out ground effects!
I can use the lower settings to search for a clean spot in the ground, in discrimination mode,
then ground balance there, and flip back to bank 1.
Both banks will retain last used settings except for ground balance.
I wasn't using bank 2 for anything else.
This process reduces effects of interference during the ground balancing process, or it seemed to for me.

Mark

Thank everyone for the help. And thanks Mark, I will try your GB procedure, the f70 works fine, it's just a bit different than the f75. But I like it.