For all you tech heads. I have noticed that the Infinium LS has 96 frequencies, the Explorer SE pro has 28 frequencies and the DFX has 2 frequencies. Does more frequencies mean a better detector? Please keep your answer in simple terms.
For all you tech heads. I have noticed that the Infinium LS has 96 frequencies, the Explorer SE pro has 28 frequencies and the DFX has 2 frequencies. Does more frequencies mean a better detector? Please keep your answer in simple terms.
Thanks guys. Good point Rudy, how do I find out how many frequencies get listened to with each machine? That info is not in their advertising.
Even a single frequency detector produces harmonics that can be advertised as a "multi-frequency" detector. As has been said, whats important is what the receiver does with those frequencies. The SE's patent(patent 5537041 section 9, lines 57 to 60) specifically says it does not use multiple frequencies.
Technically, the higher the frequency the better a detector is for small low conductive metals such as gold. The lower the frequency, the better a detector is able to penetrate the ground, and is more responsive to high conductive metals such as silver. My experience has been that the SE is a little more sensitive to deep silver, while the DFX is a little more sensitive to small gold targets.
Here's a link:
http://www.google.com/patents/pdf/D...ut=pdf&sig=ACfU3U1zbHTAis1Fzd_Ioua6kDVZTFhdvQ
Here's the section you're referring to, but I don't see anything about single frequency? It looks to me like it's a pulse wave with different lengths.
Thanks Ed.
There are two ways to view that pulse wave you refer to. One is in the time domain, which is what you "see" with a scope and would look just like you described. The other way to view it is in the frequency domain. It would look like a series of sinusoidal frequencies of different amplitudes, that sum up to produce that pulse train. This is what you would see if you used a spectrum analyzer instead of a scope.
For more info (if you care), google "Fourier series".
I actually studied Fourier series back in the 70s in electronics school--not to say I remember much about it now though. What I don't understand is, why does the coil have to be moved if a pulse is used, because it seems like the detector would pick up the decaying magnetic field in between the pulses regardless of coil movement? Someday, I'm going to read up on this.