Some numbers for a few detectors

[WV62]

My brother and I have been doing a little testing and here is the results for the machines we have F75Ltd, Tejon, F5 and F70 and all the coils we could come with.

Ron in WV

 

[doc holiday232]

Ron,thanks to you and Bro for the test results--very informative.
Didn't you use to have a Nel Sharpshooter for your 75? Would be interesting to throw it into the mix.

 

[Hoser John]

Repeat with a test bed in the ground for real results. John

 

[WV62]

Ron,thanks to you and Bro for the test results--very informative.
Didn't you use to have a Nel Sharpshooter for your 75? Would be interesting to throw it into the mix.

I sold my sharpshooter for my F75 something over a year ago and all I could find was some numbers for a clad dime. I rated the sharpshooter just a little light of the stock 11" when I had it.

FA=8", DE=9", JE=9.5, BP=11" and CL=12"

Ron in WV

 

[WV62]

Repeat with a test bed in the ground for real results. John

Hay John I will take a guess that you are not a big fan of air testing and I understand there are a lot of people that don't believe in testing equipment that way. We have done a lot of test beds over the past 30 plus years and they seem to not help much when just comparing equipment.

If I was to make a test bed of nothing but silver dimes at different depths here in my WV soil it wouldn't tell anybody what they could expect in their home state soil.

One thing that I have heard a few people say that they can find a silver coin deeper in the ground than the air test numbers. But for me I can say that in the ground depth is always less than my air test numbers. Now at times copper coins will get a halo which makes them larger than the actual coin and the detector my think a penny is a quarter and detect it deeper than a silver dime.

So for me here in WV to get in ground depth I just take 2" to 3" off my air test numbers and that is about all I can expect.

Just last week one of my brothers a I were hunting and he was using a F5 with the 11" coil and I was running a F5 with the 5" coil. He called me over on several of his targets before digging. He was getting really nice strong signals and all I could get was a scratchy weak signal, all these coins turned out to be pennies on the high side of 4" in the ground.

Not looking for a fight, just giving a few of my thoughts on air testing.

Ron in WV

 

[still looking 52]

If your looking to see what the "BEST" settings are for maximum depth then air testing will give you that information. The in ground reading will always vary from the air test reading but they will be proportional to each other. This way you know how to set your detector up for maximum depth performance.

 

[dfmike]

Thanks for the test Ron. What does CL process stand for on the F75 ? Is it something like SL on the F70 ?

The numbers on the F70 are impressive considering it's running at 55 gain only.

That's about the numbers I get on my F5 with the same coils. I've been told it's deeper in 2 tone than 3 or 4 tone. I can't try it at the moment there's too much EMI generated by an oxygen machine that can't be turned off. If you can try 2 tone vs 3-4 tone with same settings for gain and threshold on the 11 inch coil, I'd appreciate it. Did you get about the same numbers as your brother when you each tested your F5's ?

 

[WV62]

Thanks for the test Ron. What does CL process stand for on the F75 ? Is it something like SL on the F70 ?

The numbers on the F70 are impressive considering it's running at 55 gain only.

That's about the numbers I get on my F5 with the same coils. I've been told it's deeper in 2 tone than 3 or 4 tone. I can't try it at the moment there's too much EMI generated by an oxygen machine that can't be turned off. If you can try 2 tone vs 3-4 tone with same settings for gain and threshold on the 11 inch coil, I'd appreciate it. Did you get about the same numbers as your brother when you each tested your F5's ?

CL= Cache Locating processor, it is pretty slow processor used for locating larger items. But it does read a silver dime pretty far away from the coil, so I have been thinking of giving it a try for deep coins.

BP= Boost processor which is a little more in line with the SL processor on the F70

Now there are 3 of us brothers, MarkCZ has the F70 and he done his own testing and sent me the results. So the problem he ran into was EMI at higher levels of gain, so we just took what we could get with that one.

Now my other brother Still Looking 52 (SL52) has the F5 and I have one as well. So on those 2 machines I just stopped by and picked up his machine and done the testing on both of them. These 2 machines were not a match on every setting (380 of them) but they did come together for the best setting at 85 gain and +3 threshold with the 11" coil. Now the 5" coil best setting was Gain 70 and a -1 threshold. I couldn't test my 5" coil on my brothers machine because they have different connectors, his has the push in type and mine is has the screw in type.

Hope that helps,

Ron in WV

I didn't done any checking of the tones on the F5, but maybe next.

 

[doc holiday232]

Repeat with a test bed in the ground for real results. John

Hay John I will take a guess that you are not a big fan of air testing and I understand there are a lot of people that don't believe in testing equipment that way. We have done a lot of test beds over the past 30 plus years and they seem to not help much when just comparing equipment.

If I was to make a test bed of nothing but silver dimes at different depths here in my WV soil it wouldn't tell anybody what they could expect in their home state soil.

One thing that I have heard a few people say that they can find a silver coin deeper in the ground than the air test numbers. But for me I can say that in the ground depth is always less than my air test numbers. Now at times copper coins will get a halo which makes them larger than the actual coin and the detector my think a penny is a quarter and detect it deeper than a silver dime.

So for me here in WV to get in ground depth I just take 2" to 3" off my air test numbers and that is about all I can expect.

Just last week one of my brothers a I were hunting and he was using a F5 with the 11" coil and I was running a F5 with the 5" coil. He called me over on several of his targets before digging. He was getting really nice strong signals and all I could get was a scratchy weak signal, all these coins turned out to be pennies on the high side of 4" in the ground.

Not looking for a fight, just giving a few of my thoughts on air testing.

Ron in WV

Ron if I may comment on air testing:


1. you are doing it EXACTLY right
2. Air is the ONLY medium that is essentially the same the world over.
3. Air tests show how 2 same make machines Compare.
4.If someone in BF Egypt air tests their F5 and the emi levels are comparable to yours then he gets

a pretty good idea of how His machine COMPARES to your F5.

Thanks for your and Bros efforts.

 

[WV62]

Repeat with a test bed in the ground for real results. John

Hay John I will take a guess that you are not a big fan of air testing and I understand there are a lot of people that don't believe in testing equipment that way. We have done a lot of test beds over the past 30 plus years and they seem to not help much when just comparing equipment.

If I was to make a test bed of nothing but silver dimes at different depths here in my WV soil it wouldn't tell anybody what they could expect in their home state soil.

One thing that I have heard a few people say that they can find a silver coin deeper in the ground than the air test numbers. But for me I can say that in the ground depth is always less than my air test numbers. Now at times copper coins will get a halo which makes them larger than the actual coin and the detector my think a penny is a quarter and detect it deeper than a silver dime.

So for me here in WV to get in ground depth I just take 2" to 3" off my air test numbers and that is about all I can expect.

Just last week one of my brothers a I were hunting and he was using a F5 with the 11" coil and I was running a F5 with the 5" coil. He called me over on several of his targets before digging. He was getting really nice strong signals and all I could get was a scratchy weak signal, all these coins turned out to be pennies on the high side of 4" in the ground.

Not looking for a fight, just giving a few of my thoughts on air testing.

Ron in WV

Ron if I may comment on air testing:


1. you are doing it EXACTLY right
2. Air is the ONLY medium that is essentially the same the world over.
3. Air tests show how 2 same make machines Compare.
4.If someone in BF Egypt air tests their F5 and the emi levels are comparable to yours then he gets

a pretty good idea of how His machine COMPARES to your F5.

Thanks for your and Bros efforts.

doc, thanks for your support and I will pass this on to my brothers.

Ron in WV