So how good is the discrimination ?

**Robinb** · 31-07-2012, 07:41 AM

Can it tell the difference between a pull tab and a ring ?

**mal** · 31-07-2012, 08:58 AM

Personally would not take the chance with any machine no matter how good they say the disc was, even the CTX.

It only takes seconds to dig and you could be missing a nice piece of Bling Bling.

**Rob** · 31-07-2012, 01:30 PM

Mals right you have to dig em all, ring pulls are a pain in the proverbial but discrim them out and you take out thin gold rings, not worth the risk.

**Robinb** · 31-07-2012, 02:56 PM

I would have thought that a tab would be just enough difference to allow that (as opposed to ring pulls ) ?

**chriscolle** · 31-07-2012, 07:49 PM

It's all a bit vague, you've got older style ringpulls with and without their lip, new style pulltabs round or squarish.
The CTX puts them nicely in their own ID, often just a few points appart.
So it notices the difference, but do we notice it? Or interpret correctly?
I tend to dig them, but after the umpteenth time I do leave the odd "ringpull/pulltab" signal down there.

Target trace has been a benefit a few times because the signal has had a different heat signature, causing me to investigate.
Up untill now it has been older alloy coins, stainless steel hardware,... a ring will pop up sooner or later.
Surely did with the E-trac.

**Captainpugwash** · 31-07-2012, 07:55 PM

When the beaches where I live were suitable for detecting the majority of the ring pulls were always higher up the beach than the goodies, I suppose the reason could have been beacause the ring pulls were lighter than the rings hence they were easier for the motion of the waves to carry the further up the beach.

**Robinb** · 31-07-2012, 08:15 PM

Originally Posted by Captainpugwash

When the beaches where I live were suitable for detecting the majority of the ring pulls were always higher up the beach than the goodies, I suppose the reason could have been beacause the ring pulls were lighter than the rings hence they were easier for the motion of the waves to carry the further up the beach.

I would be very careful with that statement, yes a lot of ring pulls are on shore line, however over last few weeks I have pulled quite a few rings from that area as well.

**Robinb** · 31-07-2012, 08:21 PM

Originally Posted by chriscolle

It's all a bit vague, you've got older style ringpulls with and without their lip, new style pulltabs round or squarish.
The CTX puts them nicely in their own ID, often just a few points appart.
So it notices the difference, but do we notice it? Or interpret correctly?
I tend to dig them, but after the umpteenth time I do leave the odd "ringpull/pulltab" signal down there.

Target trace has been a benefit a few times because the signal has had a different heat signature, causing me to investigate.
Up untill now it has been older alloy coins, stainless steel hardware,... a ring will pop up sooner or later.
Surely did with the E-trac.

What values are you getting for the tabs ?

I have not looked at manual to see how target trace works, heat signature ?

At present I am still using my excalibur, one of the factors in wether I will get the ctx is better rejection of trash as each time i detect I end up with a bucket full of ring tabs (not so many ring pulls).
If the ctx can reject the tabs accurately I could spend much much much more time finding gold. I like gold.

**Captainpugwash** · 31-07-2012, 08:40 PM

Originally Posted by Robinb

I would be very careful with that statement, yes a lot of ring pulls are on shore line, however over last few weeks I have pulled quite a few rings from that area as well.

Where you detectect on spains beaches is there much rise and fall in the tide levels.

**Robinb** · 31-07-2012, 08:44 PM

Not much as its the med.

I think 20cm or so.

There is a good honey pot area just below wash line on my beaches.

**chriscolle** · 31-07-2012, 11:54 PM

Pull tabs come in round 12.13-15 around here, ringpulls slightly higher on the conductivity.

A pulltab or ringpull has got a definate small group in the TID cursor as a heat signature on the CTX.
Any elongated or square shape and the heat signature starts to drift outwards from the TID cursor.

It could definatly tell the difference between a small stainless nut and a pulltab with the same TID.
An Excal would have discriminated it, an E-trac maybe if the tones were conduct, the CTX showed something worth investigating.

When coin shooting with the Excal I have the disc set up so that is just breaks up the signal from a modern squarish pulltab.
Have had a few rings this way. Again I stress that my coin shooting isn't serious detecting.
More like a walk with Tector on a leash, picking up the best signals whilst enjoying the scenery.
Nothing die hard about it!!

**Captainpugwash** · 01-08-2012, 08:33 AM

Originally Posted by Robinb

Not much as its the med.

I think 20cm or so.

There is a good honey pot area just below wash line on my beaches.

The tidal difference on a big spring tide where I live is 9.5 metres thats 10 metres at high water and 0.5 at low water. In feet its approx 31foot 4 inches. Thats one reason we find ring pulls up the top end of the beach rather than the lower water line. The storms here can be very severe, and as said previously alot of the crap ends up in the higher areas of the beach. From the top of the beach to the waterline at low water the distance here is about a quarter of a mile, others beaches around the coast this distance is conciderably more.

**Robinb** · 01-08-2012, 11:00 AM

Originally Posted by chriscolle

Pull tabs come in round 12.13-15 around here, ringpulls slightly higher on the conductivity.

A pulltab or ringpull has got a definate small group in the TID cursor as a heat signature on the CTX.
Any elongated or square shape and the heat signature starts to drift outwards from the TID cursor.

It could definatly tell the difference between a small stainless nut and a pulltab with the same TID.
An Excal would have discriminated it, an E-trac maybe if the tones were conduct, the CTX showed something worth investigating.

When coin shooting with the Excal I have the disc set up so that is just breaks up the signal from a modern squarish pulltab.
Have had a few rings this way. Again I stress that my coin shooting isn't serious detecting.
More like a walk with Tector on a leash, picking up the best signals whilst enjoying the scenery.
Nothing die hard about it!!

Interesting.
What is TID ?

I go gold shooting, get loads of coins as well

Maybe not serious detecting and the views can be quite good on the beach this time of year.

(if you know what i mean !)

So far this year paid for all my excalibur and other kit with gold.

Just wish I was not digging so many tabs.

**Rob** · 01-08-2012, 01:25 PM

We all wish we didn't have to dig so many pulltabs, life would be so easy but the reality is better safe than sorry.

**Jeff Brown** · 03-08-2012, 12:53 AM

So far this year paid for all my excalibur and other kit with gold.

Yeah, that may be true, but we get at least 60% of that.

**fertler** · 03-08-2012, 09:04 AM

Originally Posted by Rob

We all wish we didn't have to dig so many pulltabs, life would be so easy but the reality is better safe than sorry.

You should have tried the beach back in the seventies and eighties when all pulltabs came off the can and were promptly dumped! Not quite so many now as most stay attached to the can - unless Popeye is pulling them of course!

Barrie.

**Robinb** · 03-08-2012, 11:00 AM

My ratio of pull tab to can is about 50 pull tabs to can or part there off.

**Slow_n_low** · 03-08-2012, 05:25 PM

Just keep digging them

on the etrac or explorers you could search in conduct and just dig high tones, you will lose some of the light thin gold but no pull tabs, but its horses for courses

the ctx you can have what ever tones you set them to.

**PASTYMAN** · 22-08-2012, 08:25 PM

I always dig all targets on a beach that are not iron, you really can't afford not to, plus it gives you something to show to that annoying kid that follows you for ages.......