Dennis,
First off, I took some pics of how I end up having to hold the F70 to perform the factory reset.
Its an awkward grip but it can be done.
<img src="http://img.photobucket.com/albums/v310/tonykrapil/P1030187.jpg" border="0" alt="Photobucket">
This is a shot while it is resetting itself
<img src="http://img.photobucket.com/albums/v310/tonykrapil/P1030188.jpg" border="0" alt="Photobucket">
When resetting the F70 be sure to be holding the two buttons
even after you power the unit back on, THEN release the two. You SHOULD see the 88 in the center of the window.
Okay, Because you were VERY accustomed to the F70 before the upgrade, and I was too, there were imo several areas that may have been corrected or enhanced aside from just iron memory we sent it in for. The F70 requires it to be set differently than we were used to.
Used to be is the main idea here. It can still get the depth but it needs to be set up differently than WE remember it. I will get to those in a moment. First I want to provide you the comparison results which are close actually.
Having my F70 set as yours, I can get 7 inches on a qtr in an air test.
IF I remove all the disc I can get 8 inches.
IF I reduce the sens to 20 and use MAX disc as basically you were using, I can get 6.5 inches on a qtr. More sens isnt always better. There is a point of no return at times. You may end up getting more noise or jumpy #s but not any increased sensitivity to the targets. What I do is turn the sens up till I do not get any more depth capability and pretty much leave it there.
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Speed Options DE and SL
I think and have a hunch, but of course cant prove it now, I THINK the speed was reversed or changed on the upgrade from what we had. There is a chance we were always running SL mode even while we were in DE. This is one of the changes that may have occurred.
For example:
At a sens of 20 if I switch to SL, the qtr can now be detected out to 9+ inches. (with the speed setting of DE I could get the qtr at 6.5)
At a sens of 65, it can now be gotten at 13.5-14 inches.
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I know the sensitivity range has been changed. I for one had made suggestions to have it changed. The way it was before the upgrade, a sens of 5 was giving me about 11 inches of air test on a qtr. Now, it is significantly less and the F70 is now usable in more trashy areas. We will NOW have to turn the sens HIGHER than we did before the upgrade BUT the sens is still there, just needs a higher number is all.
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Tones:
Seems to me, 3f gives me 1.5 inches MORE depth over 2f. Check and see what yours does. I have had different folks here confirm this just in case my hearing was the culprit. I tend to use 3f or 4f.
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Try the above suggestions and see if the unit is close to mine. The folks that didnt get accustomed to the pre-updated F70 arent struggling and the Reason is, they never got used to their unit the way it was. There are only a couple of us that have to re-learn how to set the F70 to get it back to where it was and how we remember it.
I hoped this helped you in some way.
Tony