Omega 8000 and EMI

[WKYDIGGER]

Sorry if this has been asked before. Omega users- do you notice a difference between the 10" concentric and the 11" DD as far as the amount of EMI you have? I used the 11" DD yesterday in town and out in the country and still had alot of EMI either place. Changing freq basically was no help at all. Turn the sensitivity way down and that helped. Next step is i'm going to try the 10" concentric both places and see if it works any better.
Don't get me wrong i did find stuff but i was also very disgusted with it too.

Mike

 

[WKYDIGGER]

I very seldom hunt in all metal mode.

 

[BR549]

I hunted about 4 hrs.yesterday at a old house site almost in the middle of no where.After about
30 minutes of hunting all the sudden it started going nuts.I kept moving but didn't help .Changing frequency
didnot help.I finally turned it off and bsck on and it still was sceaming.I was almost ready to see how tree resistent it was.
I then turned it off and took the cover off the machine and when I did the nut that tightens down had worked completly off and after
screwing it back in ,was good to go.
I even hunted under a small power line and was able to keep it on 75 sens.
I hate the concentric elliptical. I Always use the DD.

 

[WKYDIGGER]

Are you talking about the nut on your coil wire?

 

[basstrackerman]

i love the 11 in dd. i also have the 5in dd and see no reason to use the 10in stock coil. snow is melting and this week im hitting the dirt! or well mud lol

 

[digginLa]

I don't have the DD coil so I can't comment on that, but what I'm finding with the stock coil is that it depends on the location I'm hunting, at the school I hunted a couple of weeks ago I wasn't able to get the sens above 58-61, the two schools I hunted at yesterday allowed me to get the sens up into the 70s and at the place I hunted today I was able to set the sens at 95. All of these places are in town its just been depending on how close to the powerlines I am that is determining how high I can run my sens. Jimmie

 

[WKYDIGGER]

I just took the Omega outside with the 10" on it in my front yard. Huge difference from the 11". Ground balances alot easier and I can actually turn the sensitivity up more than I could on the 11". On the 11" when you would push the ground grab it would scream like mad for a sec then finally settle down when you started pumping the coil and there was nothing under the coil either. The 10" didn't act that way at all. I believe the 11" may have some kind of problem. I'm gonna call First Texas tomorrow and explain it to them and see what they say.
I really couldn't believe the difference.

Mike

 

[digginLa]

I've started to think that I want a second coil for the Omega, just not sure which one, the 11" would let me cover more ground, the 5" would be better in trash, but my ground isn't heavily mineralized and I already have a small coil on my Cibola that I've been using in the trash and around play ground equipment, but the 5" on the Omega would let me keep using my tones, and I guess I could get a clean sweep for the Cibola. Ahh well decisions decisions, let us know what happens with your coil issues. Jimmie

 

[Big Boys Hobbies]

They are my fav type coil but they tend to have more problems with EMI. I say always bring both when you hunt, I do.
HH!

 

[WKYDIGGER]

Any idea who I need to talk to at First Texas or should I just let the dealer that i got it from take care of it? I would almost guarantee you there is a problem with the 11"DD coil.

 

[basstrackerman]

i got a bad coil with the mxt i had and wow! was nerve racking. i used another coil and changed everything.

 

[Big Boys Hobbies]

Your can go either way. Calling First Texas will have to handle the return anyway so its best to call them.

 

[BR549]

I just didnt tighten it to the control box.Sounded like a machine gun goin off.
I am gona sell the elliptical coil that came with it.I just use the DD,And the 5 inch coil is outstanding.

 

[WKYDIGGER]

First Texas is first rate all the way. A+. I called and explained the problem i'm having with the 11"DD coil. I'm sending mine back to them and they are sending me a new one. I don't even have to pay the shipping back. You can't ask for any better customer service than that. They aim to take care of their customers. Glad I bought a Teknetics now.

Mike

 

[WKYDIGGER]

Jesus Hernandez is the one that took care of me. Jesus if you happen to read this forum. Thank you very much.

Mike

 

[Monte]

Omega users- do you notice a difference between the 10" concentric and the 11" DD as far as the amount of EMI you have?

Mike, it will depend upon the model used, the settings used, and the site location. I have used all four of the Teknetics search coils on the Delta, Gamma, Omega and G2. Instability really did vary between models at the same sites. At one location in Portland Oregon in a narrow street older neighborhood the G2 was noisier than ever. I've never had it be that bad, especially since of the four models mentioned it is usually the quietest at maximum Sensitivity.

In a variety of places I was able to compare them all. Even some out-of-town places we might visit seem like they are away from EMI sources, but not always. The Discriminate ranges on all of these models differs a bit, as do other adjustment settings, so you can't just go by an reference number of a different model. The same is true for Sensitivity and Ground Balance settings. From my own experiences, I found the 11" DD on my Omega to be noisier than the stock 10" concentric elliptical coil. Not always, but far more often then with the concentric coil. Using the exact same 11" BiAxial coil it would work a little better on a Delta and Gamma, but still they were noisier at a higher Sensitivity level than they were with their own stock coils.

I used the 11" DD yesterday in town and out in the country and still had alot of EMI either place. Changing freq basically was no help at all. Turn the sensitivity way down and that helped. Next step is i'm going to try the 10" concentric both places and see if it works any better.

I very seldom gain any real benefit from switching the operating frequency a little. I just reduce the Sensitivity and move on.

I just took the Omega outside with the 10" on it in my front yard. Huge difference from the 11". Ground balances alot easier and I can actually turn the sensitivity up more than I could on the 11".

Those were exactly my experiences. Now, the 11" DD wasn't noisier, but it really depended upon the site I was hunting at the time.

On the 11" when you would push the ground grab it would scream like mad for a sec then finally settle down when you started pumping the coil and there was nothing under the coil either. The 10" didn't act that way at all. I believe the 11" may have some kind of problem. I'm gonna call First Texas tomorrow and explain it to them and see what they say. I really couldn't believe the difference.

Remember, the Ground Grab will adjust the GB as you pump the search coil. So, it was logical for it to settle down once you started pumping the coil.

Also, when you press the Ground Grab button it helps if you've already swept the search coil over the ground a bit, then hold the coil at the ground level before you press the Ground Grab button. If the coil is held too far in the aid an the detector hasn't had any ground signal presented to it, regardless of the search coil you have mounted, it's quite possible for you to have an audio response that isn't good. It might produce the - - double dash marks and give a bad audio response. That can simply be letting you know that the detector doesn't acknowledge any good ground, or a ground reading that is below '40' and you might need to manually Ground Balance. If the ground mineral is greater than '40' then once you start bobbing the coil everything ought to balance just fine.

Monte