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GTP 1350 learning curve begins.

A

Anonymous

Guest
I got the 1350 out today for a few hours and learned a bunch of things- Ill try to keep it short (hard for me)
Hunt sites: School, playground, old parks
Modes used: Mostly "Jewelry"
Range of depths of recoveries: surface to 5"
1. The detector is sweep speed dependent. You can clip along and it will let you know something is there - this lets you cover some ground. But as soon as you hear a signal, slow down to normal speed over the target and let the 1350 process a bit. A slightly fast sweep is good in areas with shallow targets, medium for areas where there might be deep items. Too slow isnt much use at all.
2. I did note a tendency to get a clearer signal on deeper pennies with a quick zig-zag over the target. Bill R noted a depth increase with the 250 by rapidly sweeping, seems the 1350 shares that. Goodie!
2a. You have to get the speed right for the profiling to work, too. Also noted by Bill R.
3. This detector is sensitive. Others have commented on this, too. I ran the sensitivity down from factory setting a bit and still found some small itsy-bits (see the pic). Most were lead and copper bullet pieces at varying depths between 2-4", all ID'd in the nickle-to-zinc cent area. If any of them were gold doodads, they'd be mine. There was one dinky little "Hello Kitty" charm at 2-3" which ID'd in the silver range :)
4. Pinpointing is easy enough, once you get used to the on-off signal response. Center coil is the spot to work to. I circled the arrowhead in the middle of the coil with a little white-out to help visually here.
5. I have always liked the "raspy" voice these units have in all-metal pinpoint. I still do.
6. Depth indications would best be considered approximate on anything other than shallow targets. If its over 3" dig it. Thats all you need to know with any detector, I suppose.
7. Zinc pennies audio low, cursor a notch below 1 cent on the scale. Copper pennies ID high audio and read at or above 1 cent on the scale. Very nice. By the end of the day, in the wood chips, I would leave the zincers, as I didnt feel like sifting the chips to retrieve them. I had learned to trust it by then (at least in shallow wood chips).
8. Dimes are one of it's favorite foods! They sing out clear and strong at all depths so far encountered (stuff can sink fast in layered wood chips)
9. BAD NEWS. The 1350 did go bonkers once. It just cut off while I was recovering a 1961 cent at 4"(FYI only - the recovery had nothing to do with the circuit failure). I just patiently fiddled with it for a few to see what would come of it. Pulled the batteries, etc. Got it to come back on, twice, by turning off, then on. But each time it was whacked out when it did come back ...display all crazy with spurious segments and such. I ended up just resetting back to factory default. It never did it again. I read another guy's comments that this happened to him, too. IS this common? Is there a fix?
So far I like it! All it takes is me listening to what it is telling me, instead of me trying to make it do what I think it should do. It looks like a great 'shooter. It defines the term, "Keep 'Em Beepin'(KEB)".
I've been detecting for some years and the more I do, the more I'm sure I don't know all that much. My sincerest thanks to all of you folks who were patient with me and answered all my questions before I bought it. I really appreciate that.
PIC:
TOP - .01's, .25's, .10's
MID - "Silver year" .01's, "Kitty" charm $ whatsis?, .05's
LOW - tabs, gold ID range itsy-bits
KEB
david
 
It'll take some getting used to but you're doing fine. If you have any more of those problems just reboot it. The profiling works better at a lower sensitivity setting, especially if there is any trash or mineralization.
Bill
 
thanks for the input Bill. Ive learned that it works well at lower sens levels all the way 'round. The factory setting is at 9 or 9.5! This seems to be way too high for general site usage, so I back it down to 6-8, even less in "foily" playgrounds and such.
I gotta admit, I like the profiling feature. It seems to work as advertised. Regardless of the ID indication, since this feature is time dependent, the longer the signal is present through a full sweep, logically it's gotta be something big. Is that correct? The ones I've tried to dig up are way deep - I dig a big 'ol hole and its still down there! Often, the pinpoint verifies all of this by indicating a large target and at one site, previous experience tells me there are large buried iron items in the ground. All told, this seems to be a playground and beach hunters boon.
thanks for your comments,
david
 
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