GTI1500 - Why so many 1 way signals??? Please Help!

[blake_mulder]

Hi everybody

I recently upgraded my ACE 250 for a GTI 1500. I have been going back over parks that I have "done to death" with my ACE 250 and I am suffering an awful lot of 1 way signals.

OK check basics

Is sensitivity to high?
No, sensitivity is down at 6.

Is lead from coil flapping about?
No, lead is nice and tight on the stem.

Is there dirt on the coil cover?
No coil cover fitted

Never had a problem with the 250, but the 1500 seems more sensitive and I am picking up coins I somehow missed on the 250.

Please, any suggestions? or is the 1500 just more sensitive and this is to be expected....

 

[John-Edmonton]

Make sure the coil cable is secure close to the coil. If it moves around, the coil will pick up the moving coil wire.

Perhaps the park is just loaded with a lot of junk.

Knock out (the) particular notch where all those signals are showing up at.

Try another coil, perhaps your coil is at fault.

Perhaps the electronics are malfunctioning. Call Garrett and get another opinion if you bought it brand new.

Good luck!

 

[Mick in Dubbo]

G'day Blake.
I upgraded from the Ace to the 1500 as well and yes it is somewhat more touchy than the Ace. I find that if I run the sensitivity any higher than 7.5, then I start getting a lot of those one way signals. sometimes I've got to lower it from there as well for the same reason. It can drive you barmy when it does that.
Like Uncle Willy says, don't think of it as an over sized Ace, even though there are some similarities. I did and kept coming to grief. Although it is a simple looking machine, it does take a bit of patience to master. Pinpointing will take a bit longer than you think too. I found that detuning over a target (hitting and holding the pinpoint button down a second time) really helped with my accuracy. I then went back over the target a second time in normal pinpoint after centring the target.
Good luck with it.
Mick Evans.

 

[dahut]

I suspect the larger coil is seeing more trash beneath it. The little Ace coil probably covers about half the area of the 1500.

 

[Uncle Willy]

You have your sensitivity about right. Keep your coil off the ground about an inch or more. The 1500 is more sensitive thn the 250. If you're scanning fast - slow down. The 1500 has a lot of information to process as it scans. Check those one way signals and do the twitch on a few of them or go back over them very slow.

Bill..

 

[brulon]

i use the 1500 and i get a few one way signals, check from a different angle and see if you get a good two way signal. i have pinpointed the one way signals a few times and it was always trash. you will get the hang of the 1500 as you use it more and you will find that it is a good machine.


bill

 

[NM5K]

I've never used a 1500, but with the 250, one way hitters are often deep targets
if it's not caused by moving the machine and coil.
IE: sometimes with the larger 9x12 coil I can get a false signal if I am too
abrupt changing directions when swinging. That's at the end of a swing, and
if I kind of smooth up and dampen the change in direction, it will quit.
So I'd try to make sure which is actually causing the hit. The machine just
being swung, which it should do it no matter how high off the ground, or
actual stuff in the ground that it's sniffing.
You may be hitting on deep targets that the 250 couldn't quite get.
But I'd try to pinpoint them before I did any digging. If it pinpoints,
something is down there. If not, it was probably a false hit, unless the
pinpoint is detuned and missed it. That's why I'll re-press and double/triple
check if I get nothing on the first pinpoint try.
Do any of these one way hitters pinpoint? If they do, I'd dig. If not, I'd pass.
Might be trash, but might be goodies. I've dug a good many coins that
were sporadic one way hitters. They all pinpointed. Or at least with the 250.

 

[silversmith]

I've owned quite a few detectors and some of them did this on discriminate, auto mode. I learned the one way signals were trash. I never found a good target on a one way. Those I remember were a Judge 2, Gti1000, Golden Sabre, and my beloved Big Bud 220D. Dig everything for awhile to verify. Works for me!

 

[Old Katz]

Does the 1350 have the same problem with one way signals?
Katz

 

[blake_mulder]

Went out for two hours today at my local park and dug up 50 coins so the 1500 is certainly working well. Most of the 1 way signals disappear when I search from a different angle - or sometimes when I do dig them the signal just disappears! Still, what a cracking detector!

 

[RickIowa2009]

GTP1350, One way signals means usually trash, if you get a belltone both ways its usually a good signal, My nickels are one above and one below, dimes are usually right on, quarters are right on as well, I would be careful as to high high your sensitivity is, maybe a couplke of notches above the factory setting.

 

[bearkat4160]

to determine if it is actually a piece of metal. 1500 can also respond to mineralization with beeps, then after, it adjust itself it wont beep at that spot.

Alan

 

[Uncle Willy]

Pretty much so. It's the exact same machine except for profiling/imaging.

Bill

 

[Uncle Willy]

Yeah like the GTI's the 1350 operates better at lower sensitivity.

Bill

 

[Uncle Willy]

Yeah it's a coin sucking magnet.

Bill