XP Deus Depth 4 khz or 18khz

[polecat69]

I have been told by various people that 4 khz gives you more depth than 18 khz. Anyone, please help me on this question. I also would appreciate any settings that will give me more depth.

 

[cahil_2]

I don't think you should worry about frequency for depth. 4khz is more sensitive to higher conductive targets like silver, where 18 is more sensitive to lower conductive targets like gold. You will get more depth with the least amount of discrimination, or a larger coil. I found three different pennies with mine the other nite at approx 8 inches each, at 8 kHz and 30 disc, 9 inch coil.

 

[goodmore]

It depends on the target. Most of us are after coins so the 4 kHz frequency will probably see coin targets deeper. The 18kHz frequency will see lower conductors like gold and smaller targets like tiny bits bits of metal better. Ground mineralization, and EMI are just a couple things that can blow a hole in the entire theory. The Deus is a remakable machine because of the options available like frequency change. If you are worried about depth settings the silencer, reactivity, and discrimination will have an effect. Use only what you need to get the most out of the Deus. But changing those settings can turn the Deus into an unstable noise box. So change things one at a time and see how the Deus reacts.

 

[Ism]

Yes, like Cahil said. 18KHz is deeper on nickels and gold, 4 KHz is deeper on copper and silver.
18KHz seems more sensitive to smaller targets. You can do your own air test, it is an easy way to observe the difference.

 

[DukeOBass]

The lower the frequency, the better depth you'll get. You will also read large iron targets much more strongly.

I was experimenting yesterday and found that 8k was really hitting coins harder than 4 or 12 for me. I haven't used 18k much at all.

 

[CZconnoisseur]

Have been finding out that 4 kHz will nit nickels just barely at 7-8" whilst in reactivity of 2, silencer at 2 with the 11" coil. Change reactivity to 3 and I lose more than 2" on the same nickel and can't get them past 5.5". The ability to change the processing speed on this detector is really a feature that the inner geek in me can't get enough of LOL!

 

[DukeOBass]

Thanks CZ. You add a whole lot of great info here.

Usually, by this time of the summer, I've hunted like crazy, but with all of the home improvements I've been doing this year I haven't been out much and just got the Deus in January. Now that things are slowing down, I'm hoping to really get into it. I've been doing well when I do get out.

I'm going out again today and tomorrow.

 

[CZconnoisseur]

Let us know how it goes Duke! I have a doozy of a hunt lined up tonight, backyard of a 1912 house I'll be foaming at the mouth all day long!

Polecat...I have a youtube video that shows airtesting of US 90% silver coins using 4, 8, and 12 khz...it is ONLY airtesting but you can start to see a trend:

http://www.youtube.com/watch?v=Tv3ErNrkuxo

 

[DukeOBass]

Wish I had a place like that to go. I tried 3 different doors yesterday and ended up at a park I hadn't detected for a while so it had a chance to really replenish. It was a good training ground due to the number of good targets I was able to practice on while they were still in the ground.

 

[polecat69]

Thanks for the info people. I willook at the you- tube. Videos. It seems like my friends are finding silver at 10", and my deus will not get the hit

 

[DukeOBass]

Keeping your frequency, discrimination, reactivity and silencer as low as possible plus a high sensitivity and TX power will get you depth but will also make your machine very noisy as was stated. Frequency can be a picky thing as it was also mentioned that Electromagnetic interference dictates what you can use where. We have to make one adjustment at a time and keep in mind that it may not work on when you move to different site. A lot of people want to plug in some else's program and expect they are going to find piles of stuff, well it just may not work the same on my site as it does on someone else's.

EXPERIMENT - Is the key word here. Start with the basics and make small changes to see what works best on your site.

 

[polecat69]

Thanks for the tip Duke. Also, since you're a veteran thanks for your service.

 

[goodmore]

Great Post

 

[DukeOBass]

Thank you.

 

[glabelle]

Gee, I hate to see all the misinformation that just keeps spreading through posts because someone else said it.

18KHz is more sensitive to pieces of metal than 4KHz, PERIOD. Test in air. In air, 18KHz will pick up silver dimes deeper (further) than 4KHz - in air. That is why it is better for small jewelry. Notice that "gold" VLF detectors commonly use frequencies upwards of 50KHz. That is because that frequency is more sensitive yet to metal - making it better for small, low conductors like very small gold nuggets.

Lower frequencies are less sensitive to metal - and the ground (depending upon the mineralisation level)! That is why it can go deeper than higher frequencies on larger (coin) objects. 48KHz machines "see" the ground more strongly than lower frequency machines, therefore they don't go as deep - they are "masked". If you are searching in low to no mineralisation ground (lucky you), the higher frequency will always win.

It is basic physics.

George

 

[Hobo lobo]

Not all metals are created equal..... Higher freqs are more sensitive to small low conductors like gold nuggets, lower freqs work better on hig conductors like AG and CU... low freqs penetrate deeper than higher freqs, but are less senstive to small bits of metal. Not just m.o. fact.

 

[markg]

I've got a nickel buried at 6 1/2" deep. This nickel has been in the ground and undisturbed for over seven years. Perfect test for frequency differences of the Deus. 18khz gave the very best ID numbers and consistent tone. But switching to the 4khz and the ID numbers were higher and the tone was not as consistent. And yes I have the machine set to only display the 18khz ID numbers. No doubt the high frequency does better on the low conductors that includes the gold range.

 

[Hobo lobo]

I've got a nickel buried at 6 1/2" deep. This nickel has been in the ground and undisturbed for over seven years. Perfect test for frequency differences of the Deus. 18khz gave the very best ID numbers and consistent tone. But switching to the 4khz and the ID numbers were higher and the tone was not as consistent. And yes I have the machine set to only display the 18khz ID numbers. No doubt the high frequency does better on the low conductors that includes the gold range.

Yep, thats the way it works. How much mineralisation do you have?

 

[Big Boys Hobbies]

I like 12 myself. Still gets great depth and good sensitivity. 8 is my next favorite but I an a coin hunter.

 

[markg]

Some places the mineralization is basically zero where as move a few miles and it registers about half way up on the Deus scale.
Really love this machine.