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Hello,
Al as Jim in Idaho as planning to do for his whites 6000 i made a two box system for my spectra v3i. Or in fact im trying to reproduce the two box for my spectra v3i i have.
in order not to pollute his topic I decided to open a topic myself.
In the past I have made many coils from pulse industry to simple coils for garrett ace etc, they always worked fine or I get them working properly.
But I have a lot of problems with getting my spectra to work properly.
What I did: I made two 13 inch coils the tx and the rx very close to the values of the original dd coils for spectra.
The problem I have: the detector performance is good, the depth and response are there. Only the problems I keep having are: when I move the detector up or down I get a signal from the ground. It seems that the detector can not make a good ground balance.
I have tried placing the RX coil at different angles on the detector this has little to no effect. When I try this with the two box spectra that I already have (built by someone else) putting the coil at a different angle has no effect on the up and down movement of the detector, at least there is no signal like the detector does with coils that I have built.
In the concentric coils there is also a CX coil, I have not used this, could this possibly cause the problem?
Or perhaps problems with the shielding? I have built this as follows: I have sprayed a layer of graphite in the housing, attached a ground wire, laid in the windings, then half of the coil is poured with epoxy, another layer of graphite and attached the ground wire to that and another layer of epoxy as a finish.
I hope that there are people who can help me a bit further on my way, try to keep your description as simple as possible, I do not have an electro technical background so I will not know some concepts directly. I am an amateur who has learned something by building and making a lot of mistakes. And I'm building this project to increase my technical skill (at least try)
Al as Jim in Idaho as planning to do for his whites 6000 i made a two box system for my spectra v3i. Or in fact im trying to reproduce the two box for my spectra v3i i have.
in order not to pollute his topic I decided to open a topic myself.
In the past I have made many coils from pulse industry to simple coils for garrett ace etc, they always worked fine or I get them working properly.
But I have a lot of problems with getting my spectra to work properly.
What I did: I made two 13 inch coils the tx and the rx very close to the values of the original dd coils for spectra.
The problem I have: the detector performance is good, the depth and response are there. Only the problems I keep having are: when I move the detector up or down I get a signal from the ground. It seems that the detector can not make a good ground balance.
I have tried placing the RX coil at different angles on the detector this has little to no effect. When I try this with the two box spectra that I already have (built by someone else) putting the coil at a different angle has no effect on the up and down movement of the detector, at least there is no signal like the detector does with coils that I have built.
In the concentric coils there is also a CX coil, I have not used this, could this possibly cause the problem?
Or perhaps problems with the shielding? I have built this as follows: I have sprayed a layer of graphite in the housing, attached a ground wire, laid in the windings, then half of the coil is poured with epoxy, another layer of graphite and attached the ground wire to that and another layer of epoxy as a finish.
I hope that there are people who can help me a bit further on my way, try to keep your description as simple as possible, I do not have an electro technical background so I will not know some concepts directly. I am an amateur who has learned something by building and making a lot of mistakes. And I'm building this project to increase my technical skill (at least try)
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