A rooster that lays eggs?

Isn't that a bit high mind you if you want to use it for nugget hunting it should be OK  what size coil are you planing to use?

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Xavier

I believe the computor has helped and hendered our newer generation as my generation had to  use what was available in detectors and we did good,now with bells and whistles the younger kids want everything to go with everything.  jmho.  shortribs

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		Quote:			Posted by Pgill
	The Ace 250 would not work as well as that, with all it's bells and whistles

This is what I'm on about why do I need a fancy display that I will never look at except to see what my battery voltage is. All that I need is a tone that will change for the different metals and like you said that machine is a good machine it dose not ave the depth but it works well in our conditions.

 

		Quote:			Posted by shortribs
	I believe the computor has helped and hendered our newer generation

If it were not for the computers we would not be here having this discussion me being in SA and you in the USA or we could but it would have taken for ever by mail so lets all be happy about the computer. Also when I build a PI detector I now use a PIC (programmable interface controller to run all my timing and that allows me to change it at almost any time and without even having to open up the machine.

   

		Quote:			Posted by homefire
	GD Mayl disagree with me but Freq does play with Size of Gold. I'm after sub Grain size gold.

Yes but 25Kh? are you not worried about having ground bounce? 


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Xavier

		Quote:			Posted by homefire
	GD Mayl disagree with me but Freq does play with Size of Gold. I'm after sub Grain size gold. As they come they run at 14.6khz.   Thats good. I can push it a bit more.

You're incorrect but let's suppose for a moment you are not. The lower the frequency, the harder it is to find small items. Higher frequency is required for finding very small stuff. Do a little research on the metal detectors they use in the food industry to find contaminants and you'll see what I mean.

Metallic gold does not respond differently to different frequencies. It's the second most conductive metal on earth and is used everywhere as a plating to eliminate any distortion due to frequency. I have no idea why this rumor about frequency making a difference to metal type detection originates. I will say this. Frequency makes a difference in depth penetration in situations where there is metallic opposition to soil transparency. That's a fancy way of saying that iron oxide soil blocks some frequencies. So does nitrate and nitrite types of fertilizer. Use 5khz in iron laden soil land you are blocked beyond half an inch. Use 300khz in the same soil and it's like looking through glass.

Frequency DOES affect performance but not for specific metals. And even if it did affect size, the higher frequency would give you a more definitive response to tiny objects.

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		Quote:			Posted by xavier
	Now I must admit that I'm a bit confused.

  what's news bud 


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