Which frequency for medium to high ground minerals?

[88junior]

I'm trying to figure out what frequency a VLF machine needs to be to get the best depth in bad ground. Can someone help me with this question? I know PI machines are best in bad ground but you dig a ton of trash and I don't want no part of that.

 

[Tom_in_CA]

depends on what you mean by "medium to high minerals". That's a very vague question. Because if the end of the spectrum when you say: "high", you mean .......... HIGH (jet ink-black sands, etc...) then ....... gee, you're gonna need a pulse. But when you say "medium", well, gee, most everyone in the USA (aside from those in the flat plains states?) considers their place "medium", haha.

So you're going to have to be more specific. Also it depends on the type targets you're searching for. If you are ok with missing tinsel thin chains and earing studs, and if the soil is truly "medium", then any VLF machine's frequency is ok. Or MF's like the Explorer, etc... are just fine. Yes they won't work in gun-powder black washes, and yes they won't fine tinsel thin chains, but they are deadly on normal rings and jewelry, and normal soil.

So you're going to have to be more specific on your needs and soil and goals.

 

[88junior]

I hunt in N Georgia it has red clay soil which is pretty bad soil and I am a relic/coin hunter. I hunt in trashy and non trashy areas that contains quite a bit of iron.

 

[sprchng]

Deus
4 frequencies , 3 power levels , multiple ground balance methods , discrimination VDI in All Metal , 4 pinpoint modes--take your pick of combinations,,,only limitation is your imagination or experience

 

[88junior]

Deus
4 frequencies , 3 power levels , multiple ground balance methods , discrimination VDI in All Metal , 4 pinpoint modes--take your pick of combinations,,,only limitation is your imagination or experience

I know the Deus is a awesome machine, I just can't invest that much money in a machine.

 

[Walknstik]

In the past I've heard that the lower frequency VLF's were supposedly a bit better at punching deeper in mineralized ground? With the advances in technology today I'm not sure if this is still the verdict? Higher frequency units are better at hitting smaller targets hence that is the reason most gold prospecting type detectors are higher frequency with a lot of additional gain built into them. I do know that when the ground gets really mineralized any VLF type detector is going to suffer in the depth department and that's when people will use the PI's or search different grounds. Maybe someone with more knowledge on the subject will chime in. Best of luck out there and HH!

 

[Larry (IL)]

Morgan, manufactures have been dealing with that question for eons. The lower frequencies are better with depth for high conductor targets but more prone to EMI and the higher frequencies are better with EMI and lower conductor targets. Many manufactures settle on a compromise frequency for general use in the 7 to 15 Mhz. With selective filtering and other tricks, some of the best silver coin detectors operate down closer to 3 Mhz. BUT...........

In your situation, IMHO, it is not so much the operating frequency but what detector best handles ground balance, tracking and elimination is what you should be looking for. Here is the engineering report on the White's MXT family by David Johnson you might find interesting.

http://www.whiteselectronics.com/the-hobby/knowledge-base/field-reports/mxt

 

[88junior]

Very interesting read Larry I have always been interested in the MXT but have never tried one. I know your wife Nancy does quite well using one I have read quite a few of her post on the MXT forum. I was thinking the ground tracking capabilities may be what the doctor ordered for my area.

 

[Larry (IL)]

Moot point but I read my own post and found an error All my Mhz should be KHz. Duh........

 

[Mega]

This is why i keep hold of my old DFX which is a dual frequancy machine 3Khz and 15Khz but the beauty with this machine is not only can they run together but you can also use them seperatly as well ie 3Khz for some specific site and the 15Khz mode for other sites,it also allows you to use it on the wet sand as well,you can also pick them up cheaply if you shop around

No one machine does it all,but another option could be one of the early hence cheaper Minelab Exploders which has multi freq.