F4 and F5

[Bubblehead63]

Recently bought an F4 w/ DD 11" coil for my son and an F5 for myself. The F4 easily discriminates out all the small iron (sq nails, etc.) we have on our property. The F5 doesn't. I can tell it's junk by the sound signature, but if I notch out Fe or disc to around 25, even small square nails ring out strong in the 30's or higher. My yard has thousands of them so every other sweep has some kind of tone. Backed gain down to 35 and set TH to -3 or lower. This helped some but hoping for better iron elimination. Any suggestions?

 

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[liftloop]

turn and sweep again
all ways stick what ever your digging with in the ground and break the halo then re sweep
a lot of times if it's not steel the detector will keep beeping
does it pin point and beep in the same spot
hope that helps
but wance you get the nails oit there could be silver below

 

[Bubblehead63]

Thanks for the insight. I had been sweeping and circling but never considered breaking the halo- brilliant tip. Setting disc to 14 and tones to 4 gave me trailing edge low tones I never got before on the iron. The problem I have with digging all the nails is that the house was built around 1880 on ground built up by anything they could find to use as fill. For example, I dug up 18 tin canning lids with porcelain inserts, all buried together at about 18", just off the old back porch this afternoon. My heart was racing on that one. The land was purchased in 1866, the barn built in 1867, and the smoke house, chicken coop, grainery, etc., shortly after. Almost 20 years of gathering scrap iron and tin lie under the top soil. It's not impossible, but definately a challenge.

 

[RotZorn]

As a fellow F5 owner you could always do what I did- crank the disc on up past the tab/nickel point and invite a friend over who's new to the hobby (still digging every signal!) let him dig all the nails for you! lol

 

[-Taz-]

Picked up some settings from a English forum which has worked good for me;

Disc: 3
Gain:85
Threshold:9+
Tone:2

Turn the threshold as far right as you can, go for 10! Then you can crank up the gain until 85 before it starts to get a more chatty. Personaly I don´t notch out anyhing, I use the sounds to dig, and skip all nice beeps that are followed by a iron grunt, 99% rusted iron.

 

[Bubblehead63]

Thanks for the advice. I'll try the settings. I have found two hand forged axe heads with the backs mushroomed out. Found 10 feet from the barn foundation, 18 inches deep, with part of an old crosscut saw. I am getting better with the tones- purity and how crisp they sound. I'm slowly learning to listen between all the junk tones for something decent.