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Old 12-07-2017, 01:55 PM
Bonesquat's Avatar
Bonesquat Bonesquat is offline
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Join Date: Mar 2010
Location: NE Pennsylvania
Posts: 8,884
Question E-trac coil upgrade over 11" pro? Looking for more depth

I'm in PA now and hunting some old parks/sports fields, so far hitting some pretty deep dimes at about 8-9 inches. I know there has to be some deeper finds. I'm wondering if I need to get a larger coil. Any suggestions? My 11" is running auto sens +3 hitting about 25-26, so not too bad. It's a huge upgrade to dig in PA from TN and Alabama. It's so amazing to dig coins almost 10" deep and find silver.

Anyways, if anyone has any suggestions - I'm looking to gain at least 2 inches more of depth if possible.


E-trac/Compadre-SILVER coins(172) 1923 Silv Dollar 1848 O half | Halves: 4 | QRTS: 29 | Dimes: 126 | War N: 10 |||| Other finds | Gold:12 | Wheats: 653 | IHs:11

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Old 12-07-2017, 02:35 PM
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coherent coherent is offline
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Join Date: Nov 2007
Location: Northern Arizona
Posts: 112

I don't have an Etrac but I have played a little bit (testing only) with the 17" coil vs the stock on a CTX and definitely can see a little more depth and/or better signal with the larger coil. Nothing earth shattering, but easily an inch or a little more or getting a clearer, steadier signal over an "iffy" one that's very weak or jumps all over the place. Results should be similar with the Etrac I would think.
Weight would be the only prohibiting factor, but if you have a harness and you aren't hunting in a really trashy area, I think the larger coil would be a bit more productive.
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Old 12-07-2017, 08:54 PM
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choppadude choppadude is offline
Join Date: Dec 2012
Location: Twin Tiers N.Y.
Posts: 4,440

I like the NEL Tornado coil. I have used it with great success with several different detectors including the E Trac

XP Deus WS5, Teknetics T2 Classic, E Trac, Minelab CTX3030, Equinox 800, is Equinox 600, ,Makro Kruzer, Nokta Impact, Sorex Pro

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Old 12-07-2017, 09:01 PM
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Big Treble Big Treble is offline
Join Date: Dec 2011
Location: SW WI
Posts: 4,078

I've only used the stock and the Detech Ultimate 13 and the U13 sees items in my test garden my stock coil doesn't

CTX, Anfibio, V3i----Most days I'm not sure if I'm a Metal Detectorist, or a Scrap Metal Relocation Engineer.
Big Treble Outdoors Treasure Adventures -Missing big silver & anything remotely valuable since 2010.

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Old 12-08-2017, 01:43 PM
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ghound ghound is offline
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Join Date: May 2016
Location: Northern Ireland
Posts: 761

I had an ultimate coil on my Etrac some years ago, it was slightly deeper, but not 2" deeper.
My Signum with 13" coil @6khz is easily 3"+ deeper on quarter size silver compared the the Etrac with stock coil.
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