Does anyone know if the V3 is a true Multi-frequency machine or is it a three frequency machine?

[Bromly]

This topic was a real good read. Much thanks to the contributors, very good information and discussion of cross platforms. I had the DFX, I currently use the V3i, CZ20 and Sovereign GT( and a few others ).So this discussion was very enlightening!
HH-Bruce

My thoughts exactly!

Thank you all
Ken

 

[Rob (IL)]

Here is another post of Carl I copied.

All these detectors are true MF designs. They all have remarkably similar receiver hardware designs, in that they all split the received signal into individual frequency channels. That is, ALL of them do the analog processing on the individual frequencies, NOT a combination of them. This is very easy to determine with an oscope.

It is also an easy way to determine that the so-called 17-frequency BBS is really only 2 frequencies, and no more. They are roughly 3.125kHz and 25kHz. I haven't bothered to probe an FBS design but the identical transmit waveform dictates that it is also a 2-frequency design. The noise channels are minor perturbations of the transmit waveform, and not the selection of wholly different frequencies. That is, the channels might result in 3.15/25.2, 3.175/25.4, 3.2/25.6, etc (I don't recall the exact numbers)... the frequencies don't change much, and maintain an 8:1 ratio. DFX and V3 do the same thing with "frequency offset."

With all these designs the baseband signals from the individual frequency channels are sampled by an ADC and fed to a microprocessor. It is certain that they all process the BB signals in some algorithmic way that combines information from the individual channels to effect GB and to identify targets. It is pretty certain the 3 manufacturers all do it differently, resulting in pros & cons amongst the 3 approaches. But they are all unquestionably multifrequency.

- Carl