2.5 single frequency

[Justme]

Was reading on another forum that someone was having good success using the lower of the three frequencies available. Several others that owned the dfx stated they hunted in the 3 kHz only. The explanation given was the lower frequency produced a wider sine wave and easier to lock onto targets. Anyone feel free to correct me as I may be mistaken but I will try this next time I take my v3i out. Looking forward to everyone's input

 

[squirrel1]

The three frequencies you have at your disposal on your V3i can be used to pick up a wide variety of nonferrous targets. Usually lower conductors like a higher frequency i.e. small gold, nickels. The higher frequency is actually more resonant on the lower conductors. The 7.5khz frequency is geared more in the middle. Things like bullets are ideal, small/medium silver coins as well. The lower frequency is geared more for the highest of conductors i.e. quarters, half dollars. You can still use any frequency and pick up all nonferrous items, but remember "the term resonant", which means if the frequency is less than ideal for the target, your detector's depth/sensitivity to the object in question could suffer. The ground too can play a part in this. And also the targets size. A silver quarter and silver dime for example are made of similar elements with similar proportions, but the quarter is a higher conductor because if its size. A big bullet for example could be a higher overall conductor even though it's made of lead(lower conductor) vs a copper penny. So think material and size, they go hand in hand at determining a targets conductivity. Real small targets tend to favor the highest frequency, regardless of their material (not enough mass to generate any real conductivity level). And there will be times when each specific frequency will be your best bet. Also, you can run all 3 frequencies,but depth will suffer a bit.

 

[Rob (IL)]

Best frequency is determined not only by metal content, but also size & thickness. For thicker coins with high silver content (US silver), there is no question that 2.5kHz will hit harder than 22.5kHz. For US nickels (even though they are 75% copper) 22.5kHz will hit hardest. 22.5kHz may also work best on small thin coins, even those with high silver content, due to skin effect. High frequency may also work best on low silver content coinage. 7.5kHz is typically better on copper coins.

In short, test the detector for the items you want to find. If all you want is US silver, then you should use 2.5kHz. If all you want are thin gold rings or small nuggets, then select 22.5kHz. If you want hammered silver, then test a typical target and see what works best. If you want best depth on a wide range of targets, use 3F.

 

[Larry (IL)]

In addition to what Rob said, ground conditions and EMI are also factors on what frequency works best for each user in their ground and location. Higher frequencies are less prone to be affected by mineralization and EMI. Multifrequency detectors have the advantage over single frequency IMHO because you get the advantage of the detector selecting what frequency is best for the target being detected. That is why White's calls it Best Data in three frequency mode. As always though, use what works best for you.

 

[gabbyhayes]

That is the beauty of the V3i.....you have the choice of 4 different detectors in one package. 2.5 KHz, 7.5 KHz, 22.5 KHz or all 3 frequencies at the same time. As stated earlier, depending on what you are hunting for you can pick and choose the ideal frequency.
Add to that all of the different coils that are available, at a reasonable cost, and you have in my opinion the most versatile detector money can buy!

 

[wasp]

Amen gabby...

 

[gabbyhayes]

Amen gabby...

Alleluia!!!

 

[TC-NM]

Isn't called "Deep Silver"?

 

[gabbyhayes]

Yes.The deep silver program uses 2.5 kHz only .