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Omega and the new 10" DD coil

A

acasto

New member
Took the Omega and 10" DD coil for a test drive today. and here is what went down.
First thing I noticed was substantial EMI with this setup.
Did find a few coins and lots of trash, but had to run sens no higher than 60. Anything above that and there was a lot of popping in the headphones.
Changed coils back the the stock 10" conc coil, and could runs sens at max with no problems.

We don't have any high tension power lines in my neck of the woods. All power lines are strung up on wooden poles.
Where I was hunting, there were just such poles about 125 yards away, and as I walked closer, I could here the EMI, and would adjust sens down a little until it stopped.

For additional comparison, I put the new 10 DD coil on the Goldbug Pro and that set up was sweeeeeeeet.

I think Fishers new 10" DD coil is the bomb when coupled with my Goldbug Pro, but my be too much when paired with the Omega.

I do not intend this to be a negative against either the machine or the coil, just what I experienced.

Maybe Dave J. could chime in and explain this better than I.

HH and good luck to all.
Tony
 
Acasto, have you used the 11" DD coil on the Omega previously. If not, then you need to realize that DD coils can significantly increase EMI issues. Its a DD design related issue with all mfg's DD coils, not just First Texas DD coils. Also, the Omega is more sensitive unit than the G2 thus the appearence that the G2 is more stable to EMI. Its not. Set both units to 50 sens, use the DD coil on both units, airtest a dime. See which unit reads the dime furthest
 
Terra
Prior to last week, all I had used on my Omega was the 11" and 5" DD coils. So, the answer to your question is yes.
I do actually realize that DD coils can be more sensitive to EMI.
Where I live, I have never experienced EMI issues with either of those 2 coils. Never.
So, I was a little surprised to have that issue today.
My post was not an attempt to paint Fisher/Teknetics as any thing other than fine products. They are the only brands I own, and not the only brands I have ever owned. I did not imply that First Texas DD coils were the only ones susceptible to EMI.

Several people had asked for a report of how the 10"dd coil worked on my Omega, hence the post.
I enjoy this forum and search it daily for useful information. This was my attempt to return the favor.

I think the Omega is a great machine, that's why I own it. I also think the new 10" DD coil is a fine addition to my arsenal.
I am inclined to think that, in the field, my Omega, with the 11" coil on max sensitivity is about as good as it gets, with the coils I own. Not so sure that the same detector at half that setting is better. Time may prove me wrong.

Good luck to you.
Tony
 
Acasto, seeing as you use 'all' the coils and are experiencing increased EMI with the new 5x10 DD, maybe that is something that needs to be examined in regards to additional EMI being created by the 5x10 over the 11" DD. Maybe you have discovered something un-noticed regarding the 5x10 coil. Unfortunately, there are only 1 or 2 users on FMall that own the Omega & 5x10 DD. Sure would like to see additional testing from them to verify ( I do believe you) additional EMI susceptibility from this coil.
 
get out there with that new 5 x 10dd you've got and do some serious swinging and give us a report. Thanks. HH jim tn
 
I think from seeing another post where the person is testing the new 5"x10"DD coil on his G2 it seems more sensitive to stuff than the stock 11"DD coil in his test bed videos. So may be a bit hotter than the 11"DD is and that is why you experienced what you did being chatty on the Omega as it's a more hotter machine than the G2 is (Gold Bug Pro same machine different manufacturer)

Where I am my soil is at 85 and the 10"concentric stock Omega coil I can run max sensitivity runs pretty quiet. I try the 11"DD and I run at 75% and up cause at max sensitivity it's a bit chatty running a bit too hot to me. This machine is a pretty hot machine to begin with this Omega. I can run at max sensitivity with the 5"DD all the time. When I set the machine down to dig I am constantly turning it down to get the khz cycling sound to go away in my headphones so I don't have to listen to it while I dig. When I get back up to go hunting I turn the machines sensitivity back up is all. You may have answered my question on using the new 5x10"DD on the Omega as I haven't done it yet. I put it on my G2 to try it out and have left it there but was wondering how it would work on the Omega. Guess I will have to try it out myself. Should give better seperation than the 11"DD it may be more sensitive but probably not quite as deep. Probably better to use it for trashy sites. You'd get the seperation of the 5" but close to the depth of the 11".
 
acasto-----First, I would like to thank you for making that post/report on the 5X10 DD coil on the Omega, appreciate you doing it.----When I made my 3/28 post "Coils & Omega" (in regard to that coil on the Omega), it got very little response as apparently hardly nobody had tried that coil on the Omega as yet.-----You may well have discovered something that hadn't been known about that coil when used on the Omega (excessive emi at "elevated" sensitivity levels).---I hope that isn't the case.-------I know when I use that coil on my GB Pro it is one sweet runner, even at maxed out sensitivity--but then, the G2 & new GB are different (not the same type of) machines as the Omega.-----I hope we can get some more reports from 5X10 DD/Omega users, I think everybody would benefit from it.-------Thanks again acasto.-----------Del
 
I don't plan to put it on the shelf just yet. Just wanted to offer a preliminary report and see if any one else had the same experience.
I will keep you posted.

Thanks, guys.
Tony
 
OK. Took the Omega with the 10" DD coil out for a long spin today.
Hit an out of the way spot where some old buildings stood. Tons of nails, wire and rusted steel.
Was able to run sens up to max with disc at 1, GB at 47.
Also able to run in AT mode with sens up to max. Detector held a steady, dial tone like threshold from 70 up to max.
The nearest possible source of any EMI was an established 1/2 mile away.

Moved into town, with minimal EMi source of low hanging power lines. I was, at one point, directly under the wires.
I was able to set sens up to 74 with no problem. Disc at 1, GB 52. I could up it to 76-77 with a little static that would stop as soon as the coil went into motion. Anything above that, and I found it annoying. At the 74 setting, I would get the static that you normally get when your digging up a target and your Omega is just laying there. Like etrac Tom talked about above.

The coins I found were in amongst pull tabs and nails. I had to listen for the tones, but when it went over a coin, it let me know. You could separate out the good numbers and get a good steady ID.

The 3 small circles to the right are 22 bullets. There must have been dozens.

IMAG0543.jpg


I think this is one fine coil. May run a litlle hot, but it certainly does the job.
 
Great post Acasto on the Omega and the new 5x10"DD. I will have to take it off my G2 and try it on the Omega myself sometime soon. Maybe I will get a second one for it instead so I don't have to switch back and forth. Who knows, I will have to try it on it first. I thought about the new 13" coil just out but I like this detector's light weight and my G2's light weight and don't want to disrupt that. I got another detector I could get one for it instead.
 
jim tn said:
get out there with that new 5 x 10dd you've got and do some serious swinging and give us a report. Thanks. HH jim tn
Click to expand...

You're welcome to try mine for a few hunts if want to see if you like it or not.

So far, I'm pleased with it.

tabman
 
Thanks, ll might take you up on the offer, but not to thrilled about having to take the 5" off to do it. HH jim tn
 
To add on here, I just spent the evening searching the front yard of a friends house looking for a lost wedding ring with the Omega fitted with the 10" DD coil (I've only had the Omega for a couple of days). In that location (his lot is in a subdivision with power lines along the back yard) I was able to run at 95+ sensitivity with no discernible EMI interference at all. My iPhone did show several wireless home networks that were accessible. The coil did a remarkable job in separation and depth, with very solid, accurate, and stable IDs.

In my back yard, with power transmission lines (you know, the big ones) in the right of way 200 feet or so away, a buried power line to my house, and more wireless home networks, along with a ham radio operator down the street, I have to turn the Omega down to about 60 with discrimination set at 21 to totally eliminate interference from EMI. If I increase the level of discrimination, I can run it at about 75 sensitivity with discrimination at 60 or so for the same result.
 
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