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Im pretty sure on my F75 the 9.0 is the

K

Keith Southern

Active member
original version and the 9.1 is the D.S.T. Mode..

In 9.0 way out tin the woods it has a slight chatter....in 9.1 it does not...

in 9.0 its way deeper in default than the 9.1...

In 9.0 B.P. mode is faster response. than the 9.1 B.P. mode...

has anyone else seen this...Ive waited for awhile now to see if anyone notices it..

the manual says 9.0 is D.S.T. but I am certian on mine 9.1 is D.S.T.


By the way Today running 9.0 B.P 2F..99 sens I dug a spencer hull at a measured 15 inches including the 5 inches of pinestraw.. sounded like it was 4 inch's deep...9.1 DE would not hear it....9.0 DE whispered on it...

Im feel my modes are backwards from the manual...


when your able to run the 99 sens in B.P. mode in original mode with no E.M.I the depth is phenomenal..as long as the dirt is not overly mineralized..

Also may add the all metal mode is as noisy as ever EMI wise even way back in the woods...its in hyper drive...


Keith
 
9.1 is the DST mode on mine. This mode ran smoother in the high EMI area I was hunting in today. I was using the FA mode/2L tones with the 5 inch coil. Managed to pull out a 1874 Indian head penny in a spot I've been over many times. Also found thin brass suspenders piece amongst nails. Both were at good depth with my sensitivity at 85. I'm liking this upgrade so far. I checked the Indian head in bp mode and it would hit but I had to go slower than my normal swing speed while FA mode just nailed it at any speed. It was nice being able to lay the detector down to dig and not getting any EMI noise in my headphones. Only had one short hunt out in the cold. So far so good...
 
Man, I am liking what you are saying. We are frozen in and going to get drowned over the weekend. I hate to think how long it may be before I can get mine out in the field. I know I am hauling it to Florida, just to play in the sand.

Don
HH
 
Well Keith, i got my upgrade back last week, and because of the confusion over the difference between your you tube video ( which i found very informative and spurred me on to get my machine upgraded ) and the new user manual, i contacted Juan Trivizo at Fisher to clarify the situation. He informed me that he spoke to a "tech" guy and was adamant that the manual is correct, and DST is on 9.0, straight from the horse's mouth !!. To be honest, i find that the F75 is now so quiet that i can't tell the difference in either 9.0 or 9.1, but i must point out that i am still getting use to it, i bought it new a month ago.

Regards,
Adrian.
 
Hmmmmmmmmmm. I know Keith, and believe me Keith knows his detectors.

If he says his is set up different on his detector. I would bet on it..I only bet sure things. LOL

Perhaps some changes have been made at the factory, or some of the processors were set up differently from the supplier.

[size=large]I hope Fisher can investigate[/size], and advise. As long as a person for sure knows which version they have it should not matter in operation and they can choose accordingly..

The only [size=large]other explanation would b[/size]e the area your detecting may affect the machines performance and cause the better operation in one or the other modes.
 
I'm not sure what to think. I think 9.0 has better performance for me because it has DST vs 9.1. Audibly I see no difference between the two and I have a lot of buried power emi at my house. But performance wise 9.0 is better which makes me thing the DST is helping achieve better performance through the inaudible emi. Cant wait to get out and do more thorough testing.
 
I just retested inside my apartment again and cant tell which setting has DST or not. I'll have to look into it again when Im out on another hunt.
 
head out to test buried dog fence. NO detector can avoid it so we shall see.
 
yeah neither mode can do jack for the buried radio dog fence. Best I've found is the Xterra on this. Even zero sens either mode no luck. only disc to 25 will kill the noise but it's still having to respond to it. 0 sens still has some serious gain on the f75! zero sense in boost hits 7" dime and nickel and 8" quarter just fine both modes. I'll have to go with Keith on this one. I think 9.1 is DST mode. 9.0 is so quiet though there really is hardly any audible difference. 9.0 is deeper, better ID, and faster recovery in all modes. When by bury power emi I listen closely and 9.1 does marginally make it quieter. I think it really only eliminates high gain static and minor emi. They couldn't be too aggressive or performance would take a serious hit I bet. As Mike H said, use non-dst unless you absolutely have to try dst mode. They made non-dst plenty quiet and hot vs past ones I've seen. Only thing I don't like having to switch back and forth is resetting all the settings again. It takes a bit get in all the same frequency, modes, sens, gb, etc to do a head to head.

Mine first booted in 9.1
 
About the dog fence, did you try all 7 frequencies, one at a time, giving each one a chance to settle down? If not, you maay be able to find one freq. which is significantly quieter. I usually find it so.
 
yes, they are all nutso. my neighbors dog fence is the most evil thing ever! f1 and f6 are quietest around buried power at my house.
 
detectingMO said:
yeah neither mode can do jack for the buried radio dog fence. Best I've found is the Xterra on this. Even zero sens either mode no luck. only disc to 25 will kill the noise but it's still having to respond to it. 0 sens still has some serious gain on the f75! zero sense in boost hits 7" dime and nickel and 8" quarter just fine both modes. I'll have to go with Keith on this one. I think 9.1 is DST mode. 9.0 is so quiet though there really is hardly any audible difference. 9.0 is deeper, better ID, and faster recovery in all modes. When by bury power emi I listen closely and 9.1 does marginally make it quieter. I think it really only eliminates high gain static and minor emi. They couldn't be too aggressive or performance would take a serious hit I bet. As Mike H said, use non-dst unless you absolutely have to try dst mode. They made non-dst plenty quiet and hot vs past ones I've seen. Only thing I don't like having to switch back and forth is resetting all the settings again. It takes a bit get in all the same frequency, modes, sens, gb, etc to do a head to head.

Mine first booted in 9.1
Click to expand...

So what your saying is, it doesn't matter which mode you are in because they are both quiet, it's a win win situation and everybody should be happy, and Fisher have achieved what they set to do and make the machine quiet and usable.
 
I just received my new F75 ltd 2 yesterday. It seems quieter than the older units, but in my back yard it still struggles in BP mode no matter what version I set it on. I can't get above 65 sensitivity. In DE mode it will run at a higher level, but it isn't hitting as deep as my V3i so far.... I'll be running it every way possible this Sunday, and post some tests on my channel. My neighborhood is a pretty tough spot for EMI, so it can be challenging for a lot of detectors. I'm looking forward to a slight warm up here in the NC mountains, so I should get adequate testing time.
 
I think mine is same way..i did notice when using 2L the pinpoint sounds a little weird... Only in that mode..i will do more checking and report back
 
I did some more testing today, and 9.0 was a little bit deeper for me than 9.1. The stability in both modes was very similar. The DST is not so profound that it's easy to notice. This new F75 just runs better in general for me. I'm going to keep on testing, and see if I notice anything else, but so far 9.0 seems to be the way to go.
 
9.0 definitely has faster recovery. I dont care what you call it but I agree the mode to use.
 
Yes 9.0 is the best mode to use...its faster and deeper ....

The manual says that the 9.0 mode is the D.S.T. mode...but it seems the 9.1 is the D.S.T. mode....the 9.1 is slower to recover and the DE mode on 9.1 is not as deep as DE on 9.0...

9.0 seems to recover like a standard F75 S.E. and 9.1 seems like a slower F75 S.E.....

Which ever is right or wrong I like 9.0.....

By the way what are yall seeing on the all metal side..mine seems to be very chattery in all metal mode in either mode...

Heres a tip also... if you can get used to it put your pitch control on 9 as far as it will go....

when iron falses it will have a flat high tone instead of the fuller rounder high tone of a good target....Very conveying audio wise to keep you from digging larger flat iron and tin pieces...I can only pick up the nuances with the tone set all the way C.W. on 9...

Keith
 
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