I have never messed too much with the gain until recently when I was advised to up the gain when using a small coil. Last Sunday I went hunting to a spot I have hit every which way. I immediately started finding many wheat pennies that were all 8 plus inches deep. I have hunted this spot many times with many different detectors, but the coins I found were amazing. It was after the tenth wheat penny that I remembered I had my gain set higher from my last hunt with the small coil. The deep coins sounded like a four inch deep coin. Today I went to another hard hunted spot and I didn't expect much and since I was not in a hurry, I started checking signals with different gain and sensitivity settings. I got a deep signal that I suspected would be silver and I could get it from all angles, but the depth gauge was nearly pegged. I had the gain at 7 and the sens at 24 when I initally heard the signal. I adjusted the gain to 6 and sens to 22 and listened. It was still somewhat clear, but much lower in volume. Next I checked it with gain at 5 and sens at 20. I barely heard it and if not for my super phones(ratphones), I might have walked over it. If it had been windy or near a noisy road, I might have had problems. When I checked it with the sens at 26 and gain at 5, I would have dismissed it as a bad signal. I don't think the sens had too much to do with any of my findings other than too high a setting caused chirping that might mask a deep signal. I always set my gain to 5 and listened for the faint signals, but I think my hearing is starting to fail with this low of a setting. I run manual sensitivity as high as the detector will stay stable and now I run my gain at seven. Even at seven, a 8 or 9 inch deep coin will still have a slightly lower volume and I can gauge the depth before I dig. Oh back to the coin. 1956 silver quarter that was about 9 inches deep. I ended up with 14 wheats, 1 merc, and the quarter. I was using my new pro coil and it is one sweet coil. I wish I had been more open minded in years past with my settings. I hardly ever strayed from what worked. Now I am finding that things can always be better. R.L.
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Experimenting With Gain
- Thread starter RLOH
- Start date
I like to run my Explorer about as full throttle as I can with sens typically at around 25 to 27 and gain at 9.
Now with the higher gain the chirps are more pronounced too but that is how I like to run mine.
There is also loss of the sense of depth with a high gain setting but I that's how I run it, I always check the depth meter when I get a hit anyway.
Around power lines I have to back down on the sens at times to make it run stable.
I understand that these settings may not be for everyone so each should play around with the settings for different situations to see what is best for each individual.
With a smaller coil it is possible to up the sensitivity but I generally still run them from about 25 to 29, according to how much trash I am encountering.
One thing I have noticed about the small coil is it doesn't seem to be affected by interference like the stock coil.
I feel that I may be loosing some signals with lower sens but on occasions I have found some deep ones with lower sens also.
I guess we all get in a rut with what works best so by all means check how the different settings affect getting the deep ones or how it works in trashy areas.
Sounds like you are doing well with your settings,
HH.
Now with the higher gain the chirps are more pronounced too but that is how I like to run mine.
There is also loss of the sense of depth with a high gain setting but I that's how I run it, I always check the depth meter when I get a hit anyway.
Around power lines I have to back down on the sens at times to make it run stable.
I understand that these settings may not be for everyone so each should play around with the settings for different situations to see what is best for each individual.
With a smaller coil it is possible to up the sensitivity but I generally still run them from about 25 to 29, according to how much trash I am encountering.
One thing I have noticed about the small coil is it doesn't seem to be affected by interference like the stock coil.
I feel that I may be loosing some signals with lower sens but on occasions I have found some deep ones with lower sens also.
I guess we all get in a rut with what works best so by all means check how the different settings affect getting the deep ones or how it works in trashy areas.
Sounds like you are doing well with your settings,
HH.
dewcon4414
Well-known member
Gain is a lot like modulation. Some like to deffently tell when the target is deeper without looking at the screen. But, if you up the gain as you did the closer to ten the less difference between shallow and deep target sounds. For old guys like me id just as soon hear everything the same and hear it as miss a good deep target. Like you said thou when the noise level is changed the machine has to work harder to sort out those deep targets from minerials and EMI.