DFX: Frequency Select

[DeepThought]

Why provide the option of selecting one frequency over another vs. running both simultaneously? On the surface it seems contradictory (why advertise a multi-frequency capability if user-selection of the appropriate single frequency provides better performance). Thanks.

 

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[Rawhide]

I like this one, different frequencies suggest different results. It is believe a high frequency is sensitive but not very deep. While a low frequency is deep but not very sensitive. Did this help?

 

[DeepThought]

understand....but running both frequencies concurrently implies it will provide the best of both worlds (deep and sensitive) and work out the best solution for itself. Again...why have a dual-frequency mode if it doesn't do the job. Just curious about this item....

 

[airscapes]

No expert but if you were to use it at the beach in wet salt sand you would want to use the high frequency not the low..

 

[deadeye 22250]

You are given a choice between using both or just one. Using 3 KHZ it does better for silver and copper. And using 15 KHZ it is better for finding nickels and gold. By making it a two frequency detector they give you more options to choose from.

 

[christo000]

Could always jump to a v3i & use 3 frequency all the time

 

[Jim in Idaho]

Why provide the option of selecting one frequency over another vs. running both simultaneously? On the surface it seems contradictory (why advertise a multi-frequency capability if user-selection of the appropriate single frequency provides better performance). Thanks.

Just for accuracy...the DFX TRANSMITS both frequencies all the time. The selector only selects which one you receive. The V3i actually only transmits the one, or two, or all 3 you select.
Jim

 

[RobRieman]

Just for accuracy...the DFX TRANSMITS both frequencies all the time. The selector only selects which one you receive. The V3i actually only transmits the one, or two, or all 3 you select. Jim

Actually the V3i will only do 1 or 3 frequency not 2.

 

[Jim in Idaho]

Actually the V3i will only do 1 or 3 frequency not 2.

Thanks...I didn't know that.
Jim

 

[Jeff H]

understand....but running both frequencies concurrently implies it will provide the best of both worlds (deep and sensitive) and work out the best solution for itself. Again...why have a dual-frequency mode if it doesn't do the job. Just curious about this item....

Deep Thought, for me there is a real benefit to use a single frequency at certain sites where the ground's VDI will read -93 even -94. Because when using a single frequency you can turn VDI Normalization to "OFF". You can't do that when using multi frequencies. What's the benefit ? When the machine ground balances, it will naturaly loose some sensitivity to the VDI numbers on both sides of the ground's VDI number. The ground's VDI of -94 is awfully close to the positive side of the VDI scale. So when my machine ground balnces at a VDI of -94, it will easlily loose sensitivity to good targets that have a VDI of + 94, +93, +92, +91 etc. In that case I will switch to a single frequency (3kHz) and switch the VDI Normailization to "OFF". What that does is allow targets that would normally hit up in the +90's to hit lower down the VDI scale (in the +80's). You therefore avoid that loss of sensitivity that occurs when your machine is ignoring the ground's VDI and the other VDI numbers that are close to it.