Rejected Target Signals?

[Spare Change]

Hi Everyone

Had the MXT about 1.5 years now and still learning the machine.

My desire was to have a machine which would be good for Alaska/California nugget hunting and be able to reject (id) old iron junk. It seems to do this OK yet I have compared it to the GMT and with the small elliptical on the MXT and the unit adjusted to all different power levels and I get very little depth (1") on match head sized nuggets as compared to the GMT. I know GMT has a higher frequency but still I have heard reports from people hitting these with the MXT.

I get out coin hunting with the machine more than anything and am getting frustrated by the level of audio response from rejected targets. I set the disc at preset or a tad higher and lock in the ground track (I read all of Monte's tips -- Thanks!) I'm generally running the Gain at the preset.

I get what seems to me to be strong audio response from lots of trash targets negative numbers and foil etc. To my hearing there is no audio tonal difference (discrimination) to lots of these targets compared to a coin etc. I find this to be more of a problem in the C&J mode and now hunt for coins in the Relic mode and listen for the highs and then look at the meter.

I have found coins with the machine and a few pieces of jewelry but the snap-crackle and pops seem excessive.

Any ideas or is this everyone else experience?

 

[Krazyglue]

My post just above yours, kind of refers to this problem,( MXT makeover). I'm not an expert on the MXT or an electrical engineer, so I'm guessing when I say that the 14kh frequency of the MXT combined with its high gain technology makes the MXT super sensitive to the lower conductive objects. Instead of nullifying the rejected targets as I think ,(wish),it would do, they chirp or crackle (especially shallow targets), and thats darn annoying. Setting the gain a little lower helps a little bit once in awhile, but then one sacrifices a little bit in depth. Thats my 2cents worth.
Glue

 

[Jackpine Savage]

other "noisy" detectors set at low disc levels can make or break your ability to use the MXT. the 2 MXT's I have had experience with suited me well for use in heavy trash with the Disc set at 2 or even a little below and with the gain as high as 10 in the C/J mode. However, in the really bad stuff reducing the gain to 6 or 7 along with the smaller coils does help immensely. It all boils down to your ability to pick out the smooth sounds from the partially rejected junk sounds. With the disc set at low levels you hear more noise which forces you to slow down and control your sweeps to give the detector a chance to report the good targets (smooth signals). Overall the biggest factor is the more you use the MXT or any other "noisy" detector the more familiar you will get with it and your ear becomes attuned to the sounds of the good stuff. When you reach the level where the junk sounds fade into the background, yet anything slightly better triggers an alert in your hearing then you got it.
Tom

 

[jessemxt]

do you have good headphones because I heard that helps alot with the mxt. I just got the sunray pros so I cant say for sure but i will let you know

 

[Spare Change]

I appreciate everyones input.

1) I've been using the superphones but perhaps another would be better.

2) I will definitely try a slower sweep speed I have received this advice from more than one. The thing is that the meter id is really spot on and whatever it VDI's as is generally the case. My biggest problem is that I thought foil would be rejected audibly when it's id'd correctly on the meter at the preset dis.

3) The high gain and sensitivity of the unit are definitely in the mix here. I've found coins at 5"-6" at the preset gain with the little shooter in ground reading 78.