Compass detectors compared 1976 1984 1986

[Koala]

Found this while looking for something else. Ignoring the frequency as its like comparing apples to pears as the detectors are different. I thought it was quite interesting that the early detectors were considered better for silver coins than their upgraded ones

http://compass-metal-detector-forum....td7393386.html

[Qiaozhi]

Found this while looking for something else. Ignoring the frequency as its like comparing apples to pears as the detectors are different. I thought it was quite interesting that the early detectors were considered better for silver coins than their upgraded ones

http://compass-metal-detector-forum....td7393386.html

Interesting ...
This agrees with the White's Electronics DFX Engineering Report. Look at the section on Operating Frequencies ->
http://www.whiteselectronics.com/the...ld-reports/dfx
And is why they chose 6.6kHz for their general purpose detectors, which is close to the 6.85kHz frequency chosen by Compass.

[Koala]

Interesting ...
This agrees with the White's Electronics DFX Engineering Report. Look at the section on Operating Frequencies ->
http://www.whiteselectronics.com/the...ld-reports/dfx
And is why they chose 6.6kHz for their general purpose detectors, which is close to the 6.85kHz frequency chosen by Compass.

Thanks for the link. I also found the section on VDI Normalization fascinating.