Originally posted by der_fisherman
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What happens to me on my tgsl
hello 2 any 1
I tested my TGSL in air 2.2cm coin I get in 30cm
I tested it in really World in Two types of soil I get only 10cm On the ground
((same coin 2.2cm Of course ))
Do I have a problem in PCB or on IC,Tr,C,R or TGSL the problem cant fined deep coin???????
If I am wrong TGSL so good Very Sensitive ! which PCB is good and you can hear Strong sound and good sensitive which 1 Many PCB for TGSL???????????
Please These questions For any 1 Try TGSL in SOIL in really World not in air ( what PCB and what the Results for coin deep in ground ) help
Greetings
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Originally posted by salih View Posthello 2 any 1
I tested my TGSL in air 2.2cm coin I get in 30cm
I tested it in really World in Two types of soil I get only 10cm On the ground
((same coin 2.2cm Of course ))
Do I have a problem in PCB or on IC,Tr,C,R or TGSL the problem cant fined deep coin???????
If I am wrong TGSL so good Very Sensitive ! which PCB is good and you can hear Strong sound and good sensitive which 1 Many PCB for TGSL???????????
Please These questions For any 1 Try TGSL in SOIL in really World not in air ( what PCB and what the Results for coin deep in ground ) help
Greetings
Some information will help.
Can you tell on what type of ground you are testing? I mean soil.
Did you try trim GB pot (trimmer) in field?
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Originally posted by johnsmith77 View PostHello,
Some information will help.
Can you tell on what type of ground you are testing? I mean soil.
Did you try trim GB pot (trimmer) in field?
the frist soil is sand the second one is a Clay soil and yes I search for best GB
regards
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Originally posted by salih View Posthello 2 any 1
I tested my TGSL in air 2.2cm coin I get in 30cm
I tested it in really World in Two types of soil I get only 10cm On the ground
((same coin 2.2cm Of course ))
Do I have a problem in PCB or on IC,Tr,C,R or TGSL the problem cant fined deep coin???????
If I am wrong TGSL so good Very Sensitive ! which PCB is good and you can hear Strong sound and good sensitive which 1 Many PCB for TGSL???????????
Please These questions For any 1 Try TGSL in SOIL in really World not in air ( what PCB and what the Results for coin deep in ground ) help
Greetings
Is the coin 10 cm below the soil, or are you testing with coin on top of the soil?
-SB
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Originally posted by simonbaker View PostAll the TGSL PCBs are capable of 30 cm in the air.
Is the coin 10 cm below the soil, or are you testing with coin on top of the soil?
-SB
Are you experienced Tgsl in The field if you do what Results you get in deep in ground for 1E
Greetings
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help
ello 2 any 1
I tested my TGSL in air 2.2cm coin I get in 30cm
I tested it in really World in Two types of soil I get only 10cm On the ground
((same coin 2.2cm Of course ))
Do I have a problem in PCB or on IC,Tr,C,R or TGSL the problem cant fined deep coin???????
If I am wrong TGSL so good Very Sensitive ! which PCB is good and you can hear Strong sound and good sensitive which 1 Many PCB for TGSL???????????
Please These questions For any 1 Try TGSL in SOIL in really World not in air ( what PCB and what the Results for coin deep in ground ) help
HELP
Greetings
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Originally posted by salih View Posthelp
ello 2 any 1
I tested my TGSL in air 2.2cm coin I get in 30cm
I tested it in really World in Two types of soil I get only 10cm On the ground
((same coin 2.2cm Of course ))
Do I have a problem in PCB or on IC,Tr,C,R or TGSL the problem cant fined deep coin???????
If I am wrong TGSL so good Very Sensitive ! which PCB is good and you can hear Strong sound and good sensitive which 1 Many PCB for TGSL???????????
Please These questions For any 1 Try TGSL in SOIL in really World not in air ( what PCB and what the Results for coin deep in ground ) help
HELP
GreetingsI did not performed the depth test, too cold wether and too happy testing TGSL.
I remember posts by Ivconic and others, it should be about 25-35cm in soil depending on coil size.
Can you reject ferrite and iron totally?
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Originally posted by salih View Posthelp
ello 2 any 1
I tested my TGSL in air 2.2cm coin I get in 30cm
I tested it in really World in Two types of soil I get only 10cm On the ground
((same coin 2.2cm Of course ))
Do I have a problem in PCB or on IC,Tr,C,R or TGSL the problem cant fined deep coin???????
If I am wrong TGSL so good Very Sensitive ! which PCB is good and you can hear Strong sound and good sensitive which 1 Many PCB for TGSL???????????
Please These questions For any 1 Try TGSL in SOIL in really World not in air ( what PCB and what the Results for coin deep in ground ) help
HELP
Greetings
I was messing around with a commercial detector last month and was having problems finding U.S. quarters at about 10 cm. However this was right in my yard. I know for fact that this detector goes much deeper because I have found many things 25 to 30 cm deep with it. Two days ago I dug a silver dime 15 cm deep at a foot ball field. Same detector that I had problems finding stuff 10 cm or less in my yard.
So I would work with it for a while actually hunting and see how it goes, You may be surprised at how well it works.
Best of luck
Jerry
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Originally posted by johnsmith77Hello,
I managed my TGLS work good. As i think
Reason: U105 pin 4 was not connected because break in pcb.
But even working with one channel TGSL managed detect 1 euro 29cm-30cm in disc mode. reject ferrite in am mode. Not reject ferrite in disc mode.
But tr4, tr5 drain signal polarites are the same as previously.
Disc works good for now.
I had constand sound on all distance before finding error. Now-not. I decided make 555 delay. But before i will make it i made experiment. I put swith between that pcb braked trace. At first i use it swithced off. So in real conditions i have strong signal on metal object. Then connect switch on. Using this i have weaker sound, can measure depth by sound strenght and have discrimination
It also shows that maybe a single channel TGSL (TGSL/2?) might be a nice easy circuit to have fun with. Could probably make a pinpointer, or MD for children. (we don't need no stinkin ground balance...)
1) Problem with bottle caps. How it solve?
a) use cc coild insted dd? (found this on internet)
2) Can you recommend best md that rejects bottle caps good?
3) I installed metal socket on my coil. I see it rised nulling voltage. It affect nulling voltage depending on place it is installed. Do you know place where to install that socket on coil where null voltage would be affect at least. I noticed it very affect if installed on corners.
4) I can achieve at least null voltage on pin 7 LF353 1Vpp (when pin 5 grounded = when not grounded. (Pin 5 grounding i found in Dfbower's manual.)
I can achieve at least null voltage on pin 7LF353 0.4Vpp (when pin 6 grounded). (Pin 6 grounding i found in Ivconic's manual)
Is my voltages too big?
5) I see people discussing about 1-10mvpp nulling voltage. But on oscilograms uploaded to this forum i see ~0.6Vpp.
Why so difference? Do i understand it wrong?
AC voltmeter often measures lower voltage because of limited frequency band.
Thank you!
Best Regards
-SB
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Originally posted by johnsmith77 View PostU105 pin 4 not connected to -6V. Gb channel off.
But in AM mode, GB trim still affect ferrite rejection distance, because in AM mode, both channels after Tr4, Tr5 are driven by U102B.
The other possibility is that U105 still operates somewhat with pin 4 disconnected, but not sure how.
-SB
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Originally posted by simonbaker View PostYes you are correct -- but if U105 output is stuck high, then only DISC channel matters. I don't know what really happens when pin 4 is disconnected. Can you measure DC voltage at U105 pin 6 when pin 4 is disconnected?
The other possibility is that U105 still operates somewhat with pin 4 disconnected, but not sure how.
-SB
Also just for info: when i installed metal socket on coil enclosure, it raised null voltage 0,4Vpp. I had the same socket while testing and it was horizontal, now it stands vertical. I was shocked at first
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