Target separation on the 1350?

[Mick in Dubbo]

While I appreciate that the 1350 is very similar to the GTI's, I was wondering how it goes at separating targets. On the GTI, I have found that the minimum distance between 2 similar sized targets, that allows you to distinguish them as separate targets, is around 4.5 inches. With the 10x5 DD coil, it is only 1.25 inches. Using the standard coil on the 1350, if you have 2 similar sized targets, what is the minimum distance that you need between them to distinguish between them?
Thanks.
Mick Evans.

 

[Uncle Willy]

Should be about the same since they are basically the same machine with similar coils ( the 1350 coil is just minus an imaging receiver ). Raising your coil a few inches above targets and the angle at which you approach the targets has a great deal to do with target separation. "Twitching" over multiple targets often aids in separation as you are limiting the distance traveled and covered by the signal pattern. Hope this answers your question.

Bill

 

[Mick in Dubbo]

I figured that the elliptical coil may have better separation. My concern is that I'm walking over a lot of good targets because of masking. The recovery speed is the slowest I've seen on a detector, and as a result, of some concern. I do like the imaging information that the coil gives, but find that the DD coil may prove to be a better coil as the width of the signal is very handy, as well as it still overloads on larger targets like cans. It would be nice to be able to have the imaging/ profiling info as well though.
Mick Evans.

 

[dahut]

Youll get around 4 inches at best with the 1350, Mick. Nothingbetter unless you go to a smaller coil.
However, I have seen mine pull good items from right in the middle of trash. Right in the middle of the usual honking and hooting which trash elicits, comes a clear Belltone. It aint much and it takes The Twitch to tighten it up, but it's there. So don't completely bin the stock coil in the trashy sites.

My suggestion though is to get one of the small coils to accompany the 1350. I'd opt for the elliptical.

 

[Uncle Willy]

Yeah when I hunt over trash or multiple targets with the stock coil I scan in very slow motion and very short strokes, then when I hear the hint of a belltone I do the twitch over that spot in short two-inch strokes and usually isolate a good target. It takes patience.

Bill

 

[Uncle Willy]

Recovery is slower than some as it hasmore information to process at any given time. A DD coil loves bottlecaps and various junk and doesn't discriminate nearly as well as a concentric. I have a field test on the DD coil over at losttreasure.com

The DD is not the best for target separation due to the signal configuration which detects the full length of the coil and detects as deep at either end as it does anywhere else.. It's like a wedge two inches wide and 14 inches long moving under the ground like a broom and it only detects from side to side - no backwards and forward. In order to separate close targets one has to go back to my slow motion twitching technique and keep that two inch wide signal between the targets.

Bill

 

[slingshot]

If the discrimination is set low, I don't worry about target separation until I get a signal, then I use "twitchin" and slower sweep speed to see if there are more than 1 target. It's when you get antsy with the discrimination that target separation becomes a factor. If you do have to use higher discrimination, slow is the way to go.

 

[Mick in Dubbo]

I haven't been able to get out and try it in the field yet, but I've been really impressed with what it can do. I'm talking about the GTI at the moment.
Bill, I would normally agree with you about the DD, but what I found that amazed me today, is not only the target separation, but the improvement to hearing the width of the targets. In particular, coins, depending on their size, give a signal of particular width. Even our $1 coin, which is bigger and in screw cap range, gives a marginally narrower signal than a screw cap. However, I found that if you whip it across the target, the coin's signal will tighten up, but the screw cap will still sound longer. You little beauty! Our $2 coins are smaller, and in screw cap range, but give a distinctly narrower signal. It's a black and white call.
On the other end of the scale; our 5c and 10c coins are in the same area as square pull tabs. The 5c coin is small ans therefore easy to pick by the narrow signal. The 10c on the other hand, shows up at notch 4.5, and is of a very similar size to the pull tabs. Their signal seems to be a bit more solid than the pull tabs and will mostly give a single beep.They can give multiple hits like a pull tab, but still sound a bit more solid. Pull tabs seem to give narrower multiple hits.
So it would seem that problems seem to generate the opportunity to learn. Cool.
Mick Evans.
P.S. I'll post how things go when I get out in the field with it.
I love elliptical concentric coils though. Probably why I'm looking for excuses to justify buying the 1350.

 

[Uncle Willy]

Yeah different coins from different countries produce different results so it takes a bit of experimenting - so keep us posted on what you come up with. And as I have said coins in different positions and the angle at which you approach them with a DD gives varied rersults. If you have three coins laying in a row and you scan across them lengthwise all will fall into the signal pattern at the same time and read as one target. Turn 90 degrees and scan across them where the narrow signal falls between the coins and this produces a different result.

Bill

 

[dahut]

= = may be best in the open fields and woods.

 

[Uncle Willy]

Yeah for covering lots of ground they can't be beat but you have to dig a little more junk with them.

Bill

 

[Mick in Dubbo]

Yes they are good, but I think that I may actually leave more junk in the ground by using the DD. I've only had a couple of brief hunts with it, so it'll be too early to tell yet, but things are looking good. The first hunt was only an interrupted 5 min one, but the second was 45 mins and just shy of $9. The best I've done for a while.
I'll give it a good work out over Christmas. I was going to be stuck at home but circumstances have changed, so I get get to hunt in Sydney again for a week! I've already lined up some potentially very juicy spots. might even crack last years one week record of $252.
Mick Evans.