Noise Cancel

[LabradorBob]

Ok,Turn the detector on,hit noise cancel and go detecting.
Has anyone felt like their detector was going really deep some days,and not other days.
I have but maybe its just me.and i have wondered if the channel that gets picked when you hit noise cancel has anything to do with depth.
Maybe not,just a thought i had,i know a lot comes into play when detecting,such as soil moisture,and content.
But i thought i would ask! something else to learn!
LabradorBob

 

[tulare tokens]

I swear that some days your machine works better than others for no apparent reason.
Maybe the sun spots, or the cloud cover,??? Like you said, moisture plays a big role in it also.
But some days it seems like my machine can do no wrong, and some days it can't find anything.
Is it me??, The machine??, The weather?? I'll never figure that out.
Maybe it's my mental state that makes a difference??
I do stop and noise cancel again every so often, but that doesn't seem to make much difference either.
I think I'm going to go with the Pilot Error theory


Tim

 

[king-ghidorah]

It's been said by experienced people to do a "noise cancel" every 30 minutes as soil conditions, UFO sightings and other factors change.

 

[dewcon4414]

There are 11 channels ... each channel has 26 freqs randumly set between 1 and 100 kHz. anytime you move up or down the freqs chain it affects the depth or sensitivity. the closer it sets it to say 1 kHz the the depth may increase... up the freq toward a 100 the sensitivity may increase much like a gold machine. here we go with where to noise cancel again. the SE says about knee high but ive always done it at swinging level because i cant beleave without it being at that height that it can accurately set a channel without all the info... including ground noise. You can always check the channel selected by your machine. Rarely does my machine select a channel other than 5 or 6. I do noise cancel often. I dont notice noise cancelling making a difference except in semi auto.

Dew

 

[chuck ky]

how do you check the channel. thanks

 

[dewcon4414]

on the SE its MODE.... OPTION..... NOISE.

 

[deeponedge]

If I have a good day and find a lot of old stuff or a few silver coins; the next time I hunt I don't noise cancel. I leave it alone

 

[Shambler]

the SE says about knee high but ive always done it at swinging level because i cant beleave without it being at that height that it can accurately set a channel without all the info... including ground noise

These freqs are so tight on the spectrum that a simple freq change would be unlikely to quiet a very noisey machine AND by doing so would eliminate some of the gains you received from the auto-ground balancing. Making a significant enough change to eliminate background interference would alter your ground balance. It's more likely the system is making very minute freq changes then doing a more important "clipping" of the spikes on very weak signals. To actually run through all of the available frequencies and listen to each one for noise then calculate which three would provide the quietest operation would take 10x as long as it does, and it's already too dang long. Deeponedge probably has the right idea....don't noise cancel unless necessary because of noise.

For these reasons, I think noise canceling on the ground (instead of knee high) "clips" the weak signals that in fact aren't "atmospheric" noise at all.