New Ace 350 vs. Ace 250 with new DD coil

[BigCatDaddy]

For those of you who thought putting the new DD coil on your 250 would be the same as getting the 350, think again!! I headed out yesterday with my 350 and 250. First I started out with the 350, set to Jewelry mode, Sens. at factory 6 bars. I was hunting on a hillside where I have pulled out some nice relics before and there were plenty of targets. With the extra iron notches, you get a lot more info, both on the audio and the notches with the 350. I dug 6-7 coins, several bottlcaps, a couple of shell casings and a good deal of ringtabs and canslaw, but no real relics. There were lots of targets that I could have dug, but since time was limited, it I got an iron tone with a mid tone, I left it.
Next, I took the new DD coil off the 350 and hooked it up to the 250. I had marked several of the iron/mid tones and headed back for them. Same settings on the 250. The 250 did absolutely nothing over my marked targets. Not a peep. I could see the notches bouncing but no audio.
Both machines ran smoothly with the DD coil at the 6 bars of Sens., which was nice as i usually run only 4 bars with the stock coil on the 250. I got more deep targets with the 350, but that might have just been the luck of passing a coil over them, can't say for sure.
Now, if you're not a relic hunter and just dig coins in the park, the 250 w/the DD will do what you want, but if you dig relics, you might want to think of the 350 upgrade. Much more info given on targets and much more sensitive to low conductive relic-type targets. Either way, hope you like bottlecaps!! The DD sure does!!

 

[John-Edmonton]

n/t

 

[tony (Orlando FL)]

BigCatDaddy,

Good testing u have done there. Can you 'add' another test to your schedule?

How about taking the stock Ace 250 coil and placing it on the Ace 350 and see what happens.

This will let us know a little bit better if the slight different frequencies of both coils is a factor or not.

If the 250 does better than the 350 with the stock 250 coil, we will have learned something significant I think. The variable though that does stick in my mind though is the sens settings. sens of 3 may not be the same sens on both units thus skewing the results some.

Thanks in advance
Tony

 

[BigCatDaddy]

I did that, just ran out of time here at work to tell about it. The stock 250 6 x 9 coil on the 350 did OK, but I wasn't getting as much info from it as I did with the DD. I have several more coils I want to try on it, those being the 9 x 12, the Sniper, and the 10 x 14 and 7 x 10 from my GTAx.

 

[NM5K]

Good test.. One thing I'm wondering.. You say you had both set to jewelry. Normally I would expect
that to pretty much lock out the iron targets. Or at least on the 250 anyway. That the 250 was seeing
those targets, but not beeping due to being notched out, I'm wondering if they might have sounded
if you had the 250 wide open. Kind of sounds like it was working fairly normally. Maybe with the
350 being more calibrated for lower conductivity objects, the iron hits were coming in on the upper
range of iron conductivity. That you could see the hits visually on the 250, but not sounding kind of tells me
they were just notched out in jewelry mode, which actually I would usually expect with the conductivity
range of the 250. So if I were to run the DD on the 250, I'd run it wide open to have a better chance
of sounding, and not notching out the lower conductivities. I suppose a relic hunter with a 250 and
DD coil could work by the visual display alone if those low iron targets are below the iron ID range of the
250.
That they were being detected on the 250 is a good sign even if they were being notched out..
That means those targets were detected, but were just out of the ID range. And part of that could
have been the jewelry setting.. I know with the 250 and it's normal coils, I have to leave it in all metal
to get reliable iron hits. Even being in jewelry mode with it's single iron tab being notched, most
iron hits on the 250 will be seen, but not heard. One part I've wondered about is if the iron conductivity
on the 350 actually goes lower than the 250, or is just the iron scale more spread out to give better
low conductivity resolution. I guess you would have to find a target with a really low conductivity to
test that reliably. Interesting test anyway.

 

[ohio fred]

n/t

 

[Uncle Willy]

Yeah BCD that's the big drawback on DD's. They do love bottlecaps but otherwise out perform a concentric. While piddling around today with the 350 I hit a small spill of pennies laying close to each other and the DD coil was able to isolate each one whereas a concentric would have seen the spill as a one big junk target. You're right that the 350 will appeal to relic hunters but may have little over a 250 for coinshooting. I wish they would have bumped the frequency up another couple of notches. Just two degrees ain't going to set the world on fire. I'll know more about all this after I have hit several different sites under different conditions.

Bill

 

[Mick in Dubbo]

You'll find that if you wiggle the coil back towards your self, as the signal breaks off, you'll get a low reading and tone on the bottle caps. Makes 'em real easy to figure out. I wish screw caps were as easy.
Mick Evans.

 

[BigCatDaddy]

I'll check that out, thanx for the tip mate!!