F75 air test with lastest upgrades.

[cintitomcat]

Hearing what everyone saying about all metal depth i thought i would do a air test. This if from the detector that listed for sale but now on hold. Test was done in a large main garage on top of 3' high boxes. First 9.0- bp mode, 99 sens, 1c-12'', 5c-11'', 10c-10'', 25c-11'', sens 50, 1c-8'', 5c-10'', 10c-8'', 25c-8'', sens 10, 1c-7'', 5c-9'', 10c-7'', 25c-8''. All metal bp sens-99 1c-7'', 5c-7'', 10c-6'', 25c-7'', sens 50, 1c-6'', 5c-7'', 10c-5'', 25c-6'', Now 9.1 bp mode sens 99, 1c-8'', 5c-11'', 10c-8'', 25c-10'', sens 50, 1c-8'', 5c-9'', 10c-8'', 25c-9'', sens 10, 1c-8'', 5c-10'', 10c-8'', 25c-9'', All metal bp mode, sens 99, 1c-7'', 5c-8'', 10c-8'', 25c-8'', sens 50, 1c-7'', 5c-8'', 10c-6'', 25c-8''. I never hunt in all metal but that's a big difference. These numbers are where the target sound is enough to dig. Fisher told me on the phone this detector is fine. Didn't check other modes to see if there was any difference. Maybe my bp is not working, but its chatty when in that mode. .

 

[bugg]

FT should be embarrased putting out such crap.

 

[detectingMO]

thats rediculously bad numbers

 

[The Wolf]

Thanks for the data. All this info is making me question the upgrade. I watched Keith S's video last night on the newest version (12/14/14). His machine looks fine, but said he had to send it back. How can FT say your machine is OK with those numbers? The proof is in the pudding that these units areally being calibrated differently. Heres a link to the vid:

Latest Fisher F75 S.E. 2:

http://youtu.be/crp6w2Kyfso

 

[detectingMO]

His other was a prototype. When you get free units and you can still get final product free why not send in?

 

[Coin Rescue Inc]

The 12/14 is the month and year- part of the serial number.
Mine is 11/14

I would doubt that is a software revision. the software versions are 9.0 and 9.1

If there was a software revision it would be 9.2 or 10.0 for an example.

If there are differences in performance I would blame variances in some electrical components. .

 

[Bassinsmitty]

That's a good point and makes sense.

 

[sprchng]

The 12/14 is the month and year- part of the serial number.
Mine is 11/14

I would doubt that is a software revision. the software versions are 9.0 and 9.1

If there was a software revision it would be 9.2 or 10.0 for an example.

If there are differences in performance I would blame variances in some electrical components. .

I would blame Fisher
How many units do they produce in a day? and they can't test each one with a 90 second digital calibration?
Bet they don't test any.

 

[cintitomcat]

At this point i wish i would have left mine alone, until this is fixed the trade or sale value of these detectors are crap at best.

 

[Coin Rescue Inc]

Just getting home from an afternoon of hunting in a 1863 vintage park. I took time to change my batteries to New lithium and set the F 75 on a pick nick table.

I ran the air test using a clad quarter in
9.0 and 9.1 with Ground balance of 57.
power level of 99 and zero discrimination.
Although I was under these power lines there was no EMI.

9.0
__________
De 8"
BP. 10.5"
AM 12.5

9.1
__________
De. 10.5"
Bp. 13"
AM. 15"

I can't claim to be an expert on this but being curious about these reports I tested and this is what I got.

 

[cintitomcat]

Is that a new machine or upgraded one? Quiet in both 9.0 and 9.1? There's no way mine would be quiet under those lines and no where near 15'' in am, was lucky to get half of that. Are these issues more upgraded machines than new machines. Is Fisher aware of these problems and do they have any answers yet? Reason i sent in for upgrades was because of stories like this one about no E.M.I.

 

[basstrackerman]

Mine is opposite ..its deeper in 9.0. Interesting tho

 

[Coin Rescue Inc]

Is that a new machine or upgraded one? Quiet in both 9.0 and 9.1? There's no way mine would be quiet under those lines and no where near 15'' in am, was lucky to get half of that. Are these issues more upgraded machines than new machines. Is Fisher aware of these problems and do they have any answers yet? Reason i sent in for upgrades was because of stories like this one about no E.M.I.

My unit is an older one I had upgraded in Nov.

 

[detectingMO]

pretty sure "upgrades" are just head unit replacing. so same as new.

 

[sprchng]

The 12/14 is the month and year- part of the serial number.
Mine is 11/14

I would doubt that is a software revision. the software versions are 9.0 and 9.1

If there was a software revision it would be 9.2 or 10.0 for an example.

If there are differences in performance I would blame variances in some electrical components. .

From first Texas' website
First Texas Products latest purchase —

We have bought the company that builds our circuit board assemblies and other electronic companies circuits. The transition has led to some delays the past few months but we are almost caught up with production. This means in the future we will see far fewer delays on products due to circuit boards lead times.

WARNING! There is a fraudulent website from Indonesia advertising Fisher, Teknetics, and Bounty Hunter prices: ---- Beware of this website. http://kingsmetaldetector.com/

 

[cintitomcat]

Just called Fisher and was told I should be getting 11''-12'' air test with a quarter in am sens-99. Going to retest again tonight before shipping back. When in am is there a depth difference between motion and static?

 

[mudpuppy]

Coil speed does make a huge difference on depth...super fast coil swing hits DEEP, where a slower pass will not...I dont know why, but it does...Drop a q on the ground and try it yourself...you can really whip these 11"dds and hit deep pings, but move too slow, and not hit them at all...
Mud

 

[togg77]

Say What?? 11 to 12" on air test. Some of the new units are approaching 20" on the recent videos. Like Smoke Stack Lightin' (ole blues singer) says"sumpin' going on wrong".

 

[WV62]

Looks like DST knocks off 2 to 3 inches across the board. I think I will be using 9.1 unless I get into some bad EMI, you numbers look pretty good to me.

Ron in WV

Just getting home from an afternoon of hunting in a 1863 vintage park. I took time to change my batteries to New lithium and set the F 75 on a pick nick table.

I ran the air test using a clad quarter in
9.0 and 9.1 with Ground balance of 57.
power level of 99 and zero discrimination.
Although I was under these power lines there was no EMI.

9.0
__________
De 8"
BP. 10.5"
AM 12.5

9.1
__________
De. 10.5"
Bp. 13"
AM. 15"

I can't claim to be an expert on this but being curious about these reports I tested and this is what I got.

 

[Coin Rescue Inc]

I rarely had an EMI issue and that is not the reason I got the upgrade. I think you hit the nail on the head when you said run this unit in 9.1 mode....I did try that for an hour Sunday and I liked it.

I read one guy who was getting poor power performance on his new unit. He switched coils with a friend and found the coil was causing the same weakness on his friends unit. His unit picked up some power with the friends coil. So after calling FT he has to return his new unit and coils for service. That explains his problem. Coil defect not erratic programming. I had to return my coils for the upgrade so they could test the unit with both coils.
I listened to the web broadcast tonight and The Fisher guy said they test each upgrade on all the functions before returning the unit.

Looks like DST knocks off 2 to 3 inches across the board. I think I will be using 9.1 unless I get into some bad EMI, you numbers look pretty good to me.

Ron in WV

Just getting home from an afternoon of hunting in a 1863 vintage park. I took time to change my batteries to New lithium and set the F 75 on a pick nick table.

I ran the air test using a clad quarter in
9.0 and 9.1 with Ground balance of 57.
power level of 99 and zero discrimination.
Although I was under these power lines there was no EMI.

9.0
__________
De 8"
BP. 10.5"
AM 12.5

9.1
__________
De. 10.5"
Bp. 13"
AM. 15"

I can't claim to be an expert on this but being curious about these reports I tested and this is what I got.