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Author Topic: Coils for modified GPX  (Read 5957 times)

filternozzle17

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Coils for modified GPX
« on: August 06, 2017, 11:17:50 pm »
I have a selection of coils built up over the last six years.   Most are DD or Anti Interference,  as I hunt in the UK for small hammered silver coins I often need to be able to discriminate iron.  I also have a small selection of monos'.
My questions are:

Will a fully modified GPX using either Coiltek/Minelab DDs or Coiltek AI coils give extra noticeable performance?   I guess the Coiltek/Minelabe mono coils will benefit but I am not sure about the DD & AI.

My biggest problem is not ground noise but EMI from suburbia/power lines/mobile phone transmitters etc. Sometimes, I cannot get a completely smooth threshold.  Will a full modification enable smooth threshold most times?

Is there an optimum coil size for a modified GPX?   I use both the 4500 & 5000.
« Last Edit: August 07, 2017, 08:37:04 am by filternozzle17 »

filternozzle17

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Re: Coils for modified GPX
« Reply #1 on: August 08, 2017, 07:20:02 am »
I have a selection of coils built up over the last six years.   Most are DD or Anti Interference,  as I hunt in the UK for small hammered silver coins I often need to be able to discriminate iron.  I also have a small selection of monos'.
My questions are:

Will a fully modified GPX using either Coiltek/Minelab DDs or Coiltek AI coils give extra noticeable performance?   I guess the Coiltek/Minelabe mono coils will benefit but I am not sure about the DD & AI.

My biggest problem is not ground noise but EMI from suburbia/power lines/mobile phone transmitters etc. Sometimes, I cannot get a completely smooth threshold.  Will a full modification enable smooth threshold most times?

Is there an optimum coil size for a modified GPX?   I use both the 4500 & 5000.

Any answers for this one Woody?   

filternozzle17

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Re: Coils for modified GPX
« Reply #2 on: August 10, 2017, 05:30:28 pm »
I have a selection of coils built up over the last six years.   Most are DD or Anti Interference,  as I hunt in the UK for small hammered silver coins I often need to be able to discriminate iron.  I also have a small selection of monos'.
My questions are:

Will a fully modified GPX using either Coiltek/Minelab DDs or Coiltek AI coils give extra noticeable performance?   I guess the Coiltek/Minelabe mono coils will benefit but I am not sure about the DD & AI.

My biggest problem is not ground noise but EMI from suburbia/power lines/mobile phone transmitters etc. Sometimes, I cannot get a completely smooth threshold.  Will a full modification enable smooth threshold most times?

Is there an optimum coil size for a modified GPX?   I use both the 4500 & 5000.

Hello Woody, appreciate your opinion, thanks.

debongos

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Re: Coils for modified GPX
« Reply #3 on: August 10, 2017, 08:25:01 pm »
Hi filternozzle17,

Check the available products on the DetectorMods web page. There is an interference filter that may help.

Peter

filternozzle17

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Re: Coils for modified GPX
« Reply #4 on: August 11, 2017, 09:22:17 pm »
Hi filternozzle17,

Check the available products on the DetectorMods web page. There is an interference filter that may help.

Peter

Thanks Peter.    Just checking if the interference filter is also part of a full modification?

Richard

filternozzle17

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Re: Coils for modified GPX
« Reply #5 on: August 15, 2017, 07:06:47 am »
Hi filternozzle17,

Check the available products on the DetectorMods web page. There is an interference filter that may help.

Peter

Thanks Peter.    Just checking if the interference filter is also part of a full modification?

I see the filter is out of stock at the moment.   What is the modification that is required to the stock battery Peter?
Richard