Brooklyn55
New member
What is the best way to do noise Cancel on an E-Trac. I read two ways hold above the ground, or just let it sit on the ground???
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Noise cancel
- Thread starter Brooklyn55
- Start date
Steve from Ohio
New member
I noise cancel every half hour or when moving around. The manual says to do it and so I do.
From what I have been reading, noise cancel is like ground balance in other machines plus it adjusts the E-trac to any EMI.
Follow the instruction manual and keep the coil about a foot above the ground steady. Push the noise cancel button and wait till it stops.
Does not take very long but makes the machine work better especially in city areas with lots of EMI or where the ground changes quite a bit.
From what I have been reading, noise cancel is like ground balance in other machines plus it adjusts the E-trac to any EMI.
Follow the instruction manual and keep the coil about a foot above the ground steady. Push the noise cancel button and wait till it stops.
Does not take very long but makes the machine work better especially in city areas with lots of EMI or where the ground changes quite a bit.
TheMarshall
New member
Lindenjim said:The manual says to hold it 1-foot above and parallel to the ground in a clear area.. Jim
It should be done as Jim described.
Why keep the head horizontal?
Because that is in the same orientation as it is when you are detecting and, ALSO PICKING UP ANY INTERFERENCE.
'Interference' is just another general source of 'radio' waves, and as such will probably have 'polerisation'.
Without being too technical, that means that the source of the radio-wave was horizontal or vertical.
The main point is, to keep the head as still as possible, and horizontal, whilst 'Noise cancelling'
The E-Trac steps it's working frequency through all of its possible values, and monitors the received signal for the levels of interference picked up.
It then chooses a channel with the quietest operational status......TheMarshall
TheMarshall
New member
Interesting point Rip.
That suggests to me, that there is a difference in the methods employed technically, to implement ground balancing.
That is only a guess. Maybe others on the forum can offer their thoughts on the subject.
I wander if there are any electronic processes that are built into the Quattro's search-head?
With regards to the Explorer and E-Trac.
Obviously, the closer the search-head is to the ground, the more sensitive it is to ground effect.
The slightest movement could generate unwanted fluctuations in the base-line signal, even if there is no actual target or EM interference.
Raising the search-head a foot or more off the ground eliminates that possibility.
Any induced variations will corrupt the Noise balancing process and lead to an inefficient auto-selection of operational frequency.
The detector searches for that operational frequency which best reduces the hetrodyning effect of external sources of radiation.
Best regards, TheMarshall.
That suggests to me, that there is a difference in the methods employed technically, to implement ground balancing.
That is only a guess. Maybe others on the forum can offer their thoughts on the subject.
I wander if there are any electronic processes that are built into the Quattro's search-head?
With regards to the Explorer and E-Trac.
Obviously, the closer the search-head is to the ground, the more sensitive it is to ground effect.
The slightest movement could generate unwanted fluctuations in the base-line signal, even if there is no actual target or EM interference.
Raising the search-head a foot or more off the ground eliminates that possibility.
Any induced variations will corrupt the Noise balancing process and lead to an inefficient auto-selection of operational frequency.
The detector searches for that operational frequency which best reduces the hetrodyning effect of external sources of radiation.
Best regards, TheMarshall.
Andy Sabisch
Active member
This question comes out on a regular basis and each time, it always gets a wide range of answers. Here's a few points to consider for the basis of your in-field practices:
1) Noise canceling is a requisite part of the FBS detectors operation. If you have an Explorer, E-Trac, Quattro or Safari and do not Noise Cancel REGULARLY, you will sacrifice performance . . . . . and that is a proven fact. You may feel it is "stable" but there is more going on with Noise Cancel than making the detector sound stable . . . . if you are in AUTO / SEMI AUTO sensitivity, it will remain stable but at a loss of sensitivity. 30 minutes is a max between Noise Canceling for me and if the ground conditions look like they have changed, I simply take 30 seconds and redo it.
2) Holding it on the ground of off the ground: Both methods have been discussed in different Minelab manuals over the years. The E-Trac's manual says "1 foot off the ground" and as Harry said, the Quattro's says "On the ground". They both operate on the same circuit (FBS) so no one thinks it odd that hey direction changes from manual to manual? Being part of the development team we saw that statement get added to the manual at the tail end and questioned it. After checking the resulting value at MANY sites - a dew times on the ground and them off the ground guess what . . . . there was no difference in the value selected except in a few urban situations. And then the point that was evident was the channel selected ON THE GROUND provided a tad better sensitivity in AUTO than the air. Why? Because one hunts with the coil on the ground and not a foot off the ground in the air!
There is more on the subject but if you do not Noise Cancel regularly and throughout the day or keep the coil on the ground, you may not notice any performance issues but you will not be getting the most the detector - any FBS detector - can provide.
Andy Sabisch
1) Noise canceling is a requisite part of the FBS detectors operation. If you have an Explorer, E-Trac, Quattro or Safari and do not Noise Cancel REGULARLY, you will sacrifice performance . . . . . and that is a proven fact. You may feel it is "stable" but there is more going on with Noise Cancel than making the detector sound stable . . . . if you are in AUTO / SEMI AUTO sensitivity, it will remain stable but at a loss of sensitivity. 30 minutes is a max between Noise Canceling for me and if the ground conditions look like they have changed, I simply take 30 seconds and redo it.
2) Holding it on the ground of off the ground: Both methods have been discussed in different Minelab manuals over the years. The E-Trac's manual says "1 foot off the ground" and as Harry said, the Quattro's says "On the ground". They both operate on the same circuit (FBS) so no one thinks it odd that hey direction changes from manual to manual? Being part of the development team we saw that statement get added to the manual at the tail end and questioned it. After checking the resulting value at MANY sites - a dew times on the ground and them off the ground guess what . . . . there was no difference in the value selected except in a few urban situations. And then the point that was evident was the channel selected ON THE GROUND provided a tad better sensitivity in AUTO than the air. Why? Because one hunts with the coil on the ground and not a foot off the ground in the air!
There is more on the subject but if you do not Noise Cancel regularly and throughout the day or keep the coil on the ground, you may not notice any performance issues but you will not be getting the most the detector - any FBS detector - can provide.
Andy Sabisch
Andy Sabisch
Active member
If you are wanting the detector to select a channel based on EMI in the condition you are planning to be hunting, having the coil in the position it will be in WHEN you hunt will allow it to give you the most accurate setting. Please don't read into my earlier statement that you get inches more depth Noise Canceling on the ground . . .I simply said you will allow the detector to get a better indication of what interference you might be seeing WHEN you hunt and that gives you a better picture of the conditions as you hunt.
One other point that a number of people make . . . . .
NOISE CANCEL does not equal GROUND BALANCE as seen on other detectors. Different circuit design (FBS vs VLF) handles ground conditions differently.
And lastly, the part "on the E-Trac" is irrelevant . . . this applies to ALL FBS detectors, not just the E-Trac as they all function the same way.
Andy Sabisch
One other point that a number of people make . . . . .
NOISE CANCEL does not equal GROUND BALANCE as seen on other detectors. Different circuit design (FBS vs VLF) handles ground conditions differently.
And lastly, the part "on the E-Trac" is irrelevant . . . this applies to ALL FBS detectors, not just the E-Trac as they all function the same way.
Andy Sabisch
txbluesman
New member
Andy,
Thank you for clarifiying the ideal way to Noise Cancel the detector. I always wonder which method was the best...
Thank you for clarifiying the ideal way to Noise Cancel the detector. I always wonder which method was the best...
TheMarshall said:Interesting point Rip.
That suggests to me, that there is a difference in the methods employed technically, to implement ground balancing.
That is only a guess. Maybe others on the forum can offer their thoughts on the subject.
I wander if there are any electronic processes that are built into the Quattro's search-head?
With regards to the Explorer and E-Trac.
Obviously, the closer the search-head is to the ground, the more sensitive it is to ground effect.
The slightest movement could generate unwanted fluctuations in the base-line signal, even if there is no actual target or EM interference.
Raising the search-head a foot or more off the ground eliminates that possibility.
Any induced variations will corrupt the Noise balancing process and lead to an inefficient auto-selection of operational frequency.
The detector searches for that operational frequency which best reduces the hetrodyning effect of external sources of radiation.
Best regards, TheMarshall.
[size=large]TheMarshall Quote "Obviously, the closer the search-head is to the ground, the more sensitive it is to ground effect.
The slightest movement could generate unwanted fluctuations in the base-line signal, even if there is no actual target or EM interference.......................................................................................
Raising the search-head a foot or more off the ground eliminates that possibility." [/size]
[size=x-large]As has been said before.....Find an area Clear of Targets via all metal.......(I usually start around the base of a tree,and when I find a spot void of targets.
I prop the E-Trac against the tree , to avoid the possibility of even the slightest movement ) Press the noise cancel button. Then as I am waiting for the N.C. to perform,I finish getting ready by putting my gloves on,adjusting my gear,lighting a smoke,ect,and by the time my E-Trac is ready to hunt.....So AM I.......................
Then about once an hour,or if near traffic,or lawnmowers ect....when conditions change.............I put in Quick-Mask/All metal.....Look for another bare spot.........And with the handle of my E-Trac propped against my digging tool.......I press noise cancel,and re-adjust my gear........
I find it next to impossible to hold the E-Trac 12" above the ground and "STILL"..........If as "The Marshall says" 'The slightest movement could generate unwanted fluctuations in the base line signal,even if there is no actual target or EMI'.................Then doesn't it make since to as Andy put it................Hold on the Ground as in real hunting ,and N.C.?..................................
and doing it propped against a tree.Would give you no movement during N.C.,and a chance to take a break,and adjust your gear.[/size]