BBS Technology Vs VLF
By Robert Arnold

Where I hunt and do so well are old Railway Stations, Old Docks, and Old Piers. Let me ask you what do all three sites have in common? IRON TRASH The Excalibur and Sovereign share some common items and one is the Iron Mask Mode which is now hard wired in the circuit. The way this machine treats iron is different then any other machine on the market. All other machine treats it as an active target on equal ground with a gold ring or a silver dime. The normal VLF would see the iron and the dime and average the two together to get a response providing it hits both targets at the same time. If the iron has leached or is bigger or there is more iron then dime... then the dime signal is lost all together. Here the BBS Technology looks at the iron signature and separates it almost like it does a mineral signature except this is an active target it then looks for any other signature if finds any signal NON-ferrous it will drop the iron signature and report only Non-ferrous signatures. If it does not find a Non-ferrous signature it will provide a iron (negative) tone and threshold drop. Now it does this all in a Nano-sec thats 1 sec times 10 to the -9th power... now I don't know about you but that's quick. Now for the wider response signal... it's true target closer to the surface provide a wider response then the normal VLF unit and at 4" it shorter, and at 8" its shorter in duration and at 12" it's real quick and so on and so on... The only advantage the BBS Technology has in Non-ferrous trash area is the coil and the detection path... and the required slow motion of the machine... which allows you to twist and turn the machine weave thru partial signal. Try hunting in All Metal and when you hit a target turn it to discrimination and change Line of attack to separate out the targets if it truly trash no matter what angle you approach it will still be trash. But if it's a coin with a trash it maybe possible to separate the trash from the coin because of the wave pattern.

One last thing, and this is something else that the BBS bring to the table it gives you pulse depth with VLF features through the way it interprets the ground mineralization signature. Now the normal VLF unit uses ground balance to raise and lower the filters against a Zero background an a positive Mineral Feedback. That is why you raise and lower the coil and make adjustments or if you are lucky enough to have a Microprocessor ground balance, the machine takes a air sample and a ground sample and change the filtering to eliminate the ground signal. At no time is it looking at the signature of the ground just the amplitude of the signal and then raises the filter to eliminate this background signature. Now let me ask you something what happens when you filter something? (I'll comeback to this, think on it a while) Well , the ground balance process is fooling the machine into thinking it is hunting in air and to interpret targets as if it is hunting in air, or may we say bench testing the unit. Beyond that the ground signal is nothing in the eyes of the VLF machine. (answer to your question anytime I filter something I lose something of what I'm hunting for or in simple terms I lose depth) That is why a Pulse machine go so deep it does not concern itself with mineralization it's not in the equation but then again a Pulse Machine sees all and cannot find certain types of metal. Also the VLF machine since is dealing only with amplitude of ground signal it is not concern with signature of the mineral which all minerals and combination of minerals have. The VLF cannot see or compensate for the masking effect of the ground signature to bend or change the target signature. Here the BBS rules... BAR NONE... Here the BBS sees the target signature and takes it into the equation and does not filter the ground resulting in greater depth in heavier mineralized environments. It also does not fool itself into thinking it is on a bench an a target at 1" has the same reading as a target at 10" like it is in the air just a weaker signal. The ground signature is not compensated for so a dime reads as a nickel and a nickel like a nail and so on.... In this same ground with BBS a dime reads a dime a nickel reads as a nickel and the nail is a nail.... The more mineralize the effect the more you will see the results... also even though you may be hunting in a low mineralization area at surface you will see little change and at 1" maybe a number maybe not but at 10" or 12" it has a accumulative effect and a dime may now reads as a zinc penny or a pull tab.... But with BBS with will still read as a dime.

It's not one factor but all the factor combined....