Confused About Iron Tone on CTX

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detectorman5050
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Confused About Iron Tone on CTX

Post by detectorman5050 » Tue Oct 23, 2018 7:48 pm

I've been down at the beach quite a lot recently, and am slightly confused about certain signals I am seeing on the CTX.

The signals that confuse me tend to be in the bottom right of the screen, and start with 33 or 34. To me the position on the screen suggests iron junk.

However, the audio tone is not an 'iron grunt,' it is a high pitched tone, quite similar to silver.

When I dig up the items they tend to be things like bolts, encrusted in 'black stuff' that you have to crack open.

Any ideas why these items are not causing the CTX to emit an 'iron grunt.'

Thanks.


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Re: Confused About Iron Tone on CTX

Post by Dave8472 » Tue Oct 23, 2018 7:53 pm

My experience is that it is iron spikes leaching out, but you have to be careful as it can also be a small non ferrous item close to the iron

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Re: Confused About Iron Tone on CTX

Post by detectorman5050 » Tue Oct 23, 2018 8:04 pm

Dave8472 wrote:
Tue Oct 23, 2018 7:53 pm
My experience is that it is iron spikes leaching out, but you have to be careful as it can also be a small non ferrous item close to the iron

Dave ):=
Hi Dave, yes I've just posted a video on the forum about small non ferrous items sitting next to iron, however I reckon in my case it is indeed the junk that is emitting the high tone along with an ID of around 33 to 34.
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Re: Confused About Iron Tone on CTX

Post by fred » Tue Oct 23, 2018 8:21 pm

I am afraid that there is far more to it than that.

You can safely disregard large iron with the CTX as it has an unmissable signature, although when I located large iron I used to swing in towards it from all directions listening out for one way high tone anomalises that could indicate good targets near the iron.

The screen target IDs are, depending upon the type of target, only accurate to about a foot at most and the tone ID a few inches more. For this reason on beaches where I was chasing deep stuff I tended to use only the sounds. Mostly you are really only getting an indication that there is a target of some sort and the sound won't be the same as if the same target was shallower. If the target is very deep it might just be a the faintest but repeatable iron tone signal. Towards the end of my time using a CTX I was digging nearly 2 feet in black sand on some targets like old pennies and fishing weights and, despite the odd ring at ridiculous depths, it was killing me. :D

What I did notice was that once I had taken out a couple of spadefulls of sand most decent targets sounded better while iron sounded worse, disappeared or nulled. This is not foolproof because sometimes small targets slipped deeper into the hole and disappeared too so you have to use your experience to guess at what sort of target you are chasing. :D
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Re: Confused About Iron Tone on CTX

Post by detectorman5050 » Tue Oct 23, 2018 8:32 pm

@Fred, I am not really digging stuff up much more than a foot at this stage. I will try and find one of these items that give an ID on the bottom right of the screen/high tone, and post a video of it here - that will help explain what I mean better. Thanks.
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Re: Confused About Iron Tone on CTX

Post by fred » Tue Oct 23, 2018 8:38 pm

Just reread your post. Any holed iron is likely to give a good signal with the CTX. :D
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Re: Confused About Iron Tone on CTX

Post by detectorman5050 » Tue Oct 23, 2018 8:46 pm

fred wrote:
Tue Oct 23, 2018 8:38 pm
Just reread your post. Any holed iron is likely to give a good signal with the CTX. :D
Thanks Fred, none of the stuff I've found has holes in it. It seems to be exclusively the stuff you find on beach encrusted in 'hard black stuff' causing the confusion. Anyway, I will try and find an example, and make a video of it.
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Re: Confused About Iron Tone on CTX

Post by fred » Wed Oct 24, 2018 3:49 am

detectorman5050 wrote:
Tue Oct 23, 2018 8:46 pm
fred wrote:
Tue Oct 23, 2018 8:38 pm
Just reread your post. Any holed iron is likely to give a good signal with the CTX. :D
Thanks Fred, none of the stuff I've found has holes in it. It seems to be exclusively the stuff you find on beach encrusted in 'hard black stuff' causing the confusion. Anyway, I will try and find an example, and make a video of it.
I'm using a Nox now but if the lumps give a decent signal I always break them open as I always have. Usually either bits of nonferrous ordnance for the scrap bin or holed ferrous. ::g
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Re: Confused About Iron Tone on CTX

Post by Buriedbytime&dust » Wed Oct 24, 2018 10:28 am

fred wrote:
Tue Oct 23, 2018 8:38 pm
Just reread your post. Any holed iron is likely to give a good signal with the CTX. :D
I know a song about that :D

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Re: Confused About Iron Tone on CTX

Post by Buriedbytime&dust » Wed Oct 24, 2018 3:43 pm

detectorman5050 wrote:
Tue Oct 23, 2018 7:48 pm
I've been down at the beach quite a lot recently, and am slightly confused about certain signals I am seeing on the CTX.

The signals that confuse me tend to be in the bottom right of the screen, and start with 33 or 34. To me the position on the screen suggests iron junk.

However, the audio tone is not an 'iron grunt,' it is a high pitched tone, quite similar to silver.

When I dig up the items they tend to be things like bolts, encrusted in 'black stuff' that you have to crack open.

Any ideas why these items are not causing the CTX to emit an 'iron grunt.'
Thanks.

Are you using 50 Conductive tones and an open screen? That would explain why your FE 33/34 target is giving a high tone.

There are folks who claim that you can differentiate between a ferrous high tone and a non-ferrous one on 50CO/open screen, but to my ears they sound absolutely identical.

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Re: Confused About Iron Tone on CTX

Post by detectorman5050 » Thu Oct 25, 2018 8:45 pm



Are you using 50 Conductive tones and an open screen? That would explain why your FE 33/34 target is giving a high tone.

There are folks who claim that you can differentiate between a ferrous high tone and a non-ferrous one on 50CO/open screen, but to my ears they sound absolutely identical.
I have just checked and it seems I was in combined tones when I left the beach, however I do remember messing about with 50 conductive tones while I was there.

Next time I go back I will check my tone settings, and make a video to ascertain what is going on here.

Thanks.
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Re: Confused About Iron Tone on CTX

Post by Adam17 » Thu Nov 01, 2018 11:44 am

On that note of iron emitting a high tone -

I had the same last weekend!!

This was a large (10mm thick about the size of a bag of sugar) lump of iron!
As I got deeper the tone did change, but was getting a blip of high tone, so continued to dig it out as you know we are not supposed to leave it there - there you are, 100 yards from the edge and think, my goodness I cant be bothered to lug that, but when I think that I am soon over come with dread & guilt of thinking it, so I lug it to the edge!

Well on my walk of shame to the bunch of trees holding this lump of iron I spotted on the floor - ON THE SURFACE, A HAMMERED!!!!

Not positively ID'd yet - but either Alex 3rd or David....

So chuffed to say the least!! Do good and good happens!!
Warm regards

AllDetecting Adam17

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