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Coils for modified GPX

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filternozzle17:
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.

filternozzle17:

--- Quote from: filternozzle17 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.

--- End quote ---

Any answers for this one Woody?   

filternozzle17:

--- Quote from: filternozzle17 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.

--- End quote ---

Hello Woody, appreciate your opinion, thanks.

debongos:
Hi filternozzle17,

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

Peter

filternozzle17:

--- Quote from: debongos 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

--- End quote ---

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

Richard

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