DFX 300 stability

[je177]

I have a few questions regarding my DFX 300 and it's performance. How important is it to run the DFX stable? By stable I mean with an uninterrupted smooth threshold. It seems that more often than not, in order for me to have a smooth threshold I have to run the DFX with a preamp gain of maybe 2 and AC sensitivity in the low 70s. I have no doubt that running the detector with the settings is sacrificing depth. Is it really that detrimental to performance if I run the unit a bit more "hot"? There will likely be more blips in the threshold and some occasional fall saying I would assume, but wouldn't the true targets come through as well? If anyone could help me out with this it would be greatly appreciated. I want to get the best performance I can out of the DFX.

HH
Jim

 

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[airscapes]

That a can of worms.... Try setting it to 3khz only in an area where there is NO EMI and see what your max setting can be.. mine is back to whites for the 3rd time.. PAG=2 AC=60 is as high as mine will go and stay stable.. another guys can go to low 70s. The 3kHz channel will effect it in multi frequency mode. So if your is like mine.. PM me and I will let you know how mine turns out.. should hear from then in a day or 2.
If you can get AC to the 70s in 3Khz you are in good shape

 

[je177]

Thanks for the help. My DFX seems to be quite noisy at times. I found some great things with it but I'm wondering if I'm not using it to its potential. Anyone else that may have some insight into this, feel free to let me know. Thanks again.

 

[pescadore]

I have a few questions regarding my DFX 300 and it's performance. How important is it to run the DFX stable? By stable I mean with an uninterrupted smooth threshold. It seems that more often than not, in order for me to have a smooth threshold I have to run the DFX with a preamp gain of maybe 2 and AC sensitivity in the low 70s. I have no doubt that running the detector with the settings is sacrificing depth. Is it really that detrimental to performance if I run the unit a bit more "hot"? There will likely be more blips in the threshold and some occasional fall saying I would assume, but wouldn't the true targets come through as well? If anyone could help me out with this it would be greatly appreciated. I want to get the best performance I can out of the DFX.

HH
Jim

The DFX is not a quiet smooth running machine when you are trying to get maximum depth out of it. I always ran mine on the border of instability with a choppy threshold I could usually run PAG 3 and AC sensitivity of 75+ and got good depth that way. I never ran mine with a smooth threshold and like you, would have to use a PAG of 2 in the low 70's to achieve that. The machine is fairly tame at that level and I did not get the depth I wanted. A small coil will also help immensely if you are in trash. I could usually run them hotter than the big coils. I also run my M6 and the MXT the same way pushing the limits of stability. You get accustomed to the noise and the depth you get will increase substantially. The exception that I would make to that setting would be in a really trashy area with lots of shallow targets. I will generally reduce the sensitivity a little, dig up all the surface stuff and then go back for the deep ones that could have been masked.

 

[SouthFLdigger]

As the other guys mentioned, the DFX is great machine however it is not a "quiet search" machine if you want reasonable depth. For salty sand bad soil and general purpose, it is a great detector. However this assumes you are in an EMI free area, in such cases the DFX can be pushed deep. With a Preamp gain of 4 and a sensitivity of 76, dc sens 50, i run mixed mode, the DFX will air test 12" on a quarter using both frequencies, depth is similar in my soil (dry sand or dry soil). However such gain cannot be used around EMI prone areas, this is why the DFX is my dry sand and wet sand beach machine where EMI is minimal. In the urban parks i use my Nokta or Gamma, G2 .....