Ground filter

[ronthebomb]

Is ground filter a major factor for max depth of target objects. And rating ground filter among the other factors how does it rank? If someone was to rank most important #1 to the least important, how would this look? And how would you get to this conclusion?

 

[The Beep Goes On]

I don't think anyone wants to write a small book (but I could be wrong!), but filter sets the foundation for all your other settings. If your soil and sweep don't match the filter you probably won't find much.

 

[ronthebomb]

I don't think anyone wants to write a small book (but I could be wrong!), but filter sets the foundation for all your other settings. If your soil and sweep don't match the filter you probably won't find much.

I did think this might be a loaded question. But before you start a how do you know what is the best ground filter to use.
This is how I approach each hunt I hold the coil in the air, zero the ground probe, around here in the coin and jewelery is about 1.5 to 2.5 in all 3 freq. Then I pull trig er and push enter completing a ground balance. Then I go to sensitivity and through the process of elimination I take sensitivity down starting with TX boost. Then walk the gain down some then disc down until no false random signal. Takes maybe 60 seconds after all that I hunt.

 

[ronthebomb]

How did You find this out!

 

[The Beep Goes On]

White's V3 Spectra Manual - Page 40

Ground filter (choose from 8 different filters, "10.0Hz High") - Filtering ground minerals allows deeper penetration (detection depth) in mineralized grounds. Less ground filtering benefits low ground mineral areas may increase detection depth, however, doesn

 

[jbow]

The best way, I think, to set the ground filter is to find a target of some kind, it can be trash but 3 or 4 inches deep... swing over it at your regular speed while toggling up and down through the filter settings. You don't have to leave the adjustment to hear the response. Use the live controls and the up/down arrows and swing until you get the best signal. You also need to adjust the recovery speed for your filter setting, swing speed, and trash level. Once you get the filter right try raising or lowering the recovery speed. 40 will be about as fast as an F75 but sometimes I get a better signal between 90 and 100. Once you get the recovery set where your signal is as good as it can get... run through the filters again to see if it is still as good as it can get. Of course you will already have set your sens a few notches down from where it starts to chatter and will have pumped the coil 15 or 20 times over clean ground. You may also want to lower the autotrac to 20. The RX isn't that important unless you are in a place with really deep targets. The RX gain will not get you anymore depth, the disc sens will. The RX gain only amplifies what you are already hearing including EMI and ground noise.

Always adjust the ground filter to match your swing speed because you will end up swinging at whatever speed you usually swing. Same with the recovery speed but you also have to consider how much trash or iron is in the ground when adjusting the recovery but both the recovery speed and the ground filter react with your swing speed.

J