Below copied from Dankowski forum. Posted by owner himself.
Seems Anfibio is a deep striker in Fla soil.
Enjoy
NASA-Tom Wrote:
-------------------------------------------------------
> Interestingly..... the CZ is one of the most EMI r
> esilient detectors on planet Earth. Fortunately...
> …. it is a simultaneous multi-frequency unit...… t
> hat performs substantially better in bad mineraliz
> ation...…. than nearly all single freq units; yet,
> certainly...… is not perfect. (And it's a late 198
> 0's & 1990 technology platform). I still retain a
> few new-in-box units in my inventory.
>
> Additional food-for-thought: I tested EQX in Pros
> pecting Mode-2 ...at one of my remote test-gardens
> ...….. with the following air-test results on a cl
> ad dime:
>
> Dec. 03 = 12" in Noise Cancel channel -6
> Dec. 04 = 10" in Noise Cancel channel -6
> Dec. 07 = 13" in Noise Cancel channel -6
>
> No other settings were changed. All parameters wer
> e exactly the same. On Dec. 03 and Dec. 07...... a
> bsolutely zero audible EMI. On Dec. 04..... I coul
> d hear a very slight amount of EMI chatter. Certai
> nly not enough for me to be concerned about. (((Or
> should I be!!))). Can you see were there's 'signif
> icance' in an air-test? Can you see were there's '
> significance' in carrying a spare dime.... for a 1
> 5 second test?
>
> At this same exact site...…. on Dec 09...…. I enco
> untered the following resultant:
>
> Noise Cancel channel '0' = 10"
> Noise Cancel channel '7' = 13"
>
> Soooooooooo………..by virtue of carrying a dime with
> me in the field...…. and taking 20 seconds to test
> the best (top two EMI-free) Noise Cancel channels.
> ... in an air-test; subsequently to witness/experi
> ence a 10" noise-free channel...… and a 13" noise-
> free channel...……. do you think I should then proc
> eed to hunt with the 10" channel???
> Again...… can you see the importance of carrying a
> spare dime with you...in the field?
> Changing MODES on the Equinox...…………. will express
> varying levels of EMI
> Changing Freqs in each individual MODE ….. will ex
> press varying levels of EMI
> The best EMI mitigation channel will not be the sa
> me channel..... for each MODE.... nor each frequen
> cy selection.
> All data holds true for other types/brands of dete
> ctors.
>
> Recently...….. I wanted to perform a curiosity-tes
> t with the Anfibio at a beat-to-death site. I had
> 'finished' this site with the Anfibio…….. with the
> best EMI-mitigation day...presenting 10.5" on a cl
> ad dime air-test. When I showed up on this particu
> lar day..... ready to commence my 'curiosity-test'
> ...…. my initial set-up protocol expressed a 13" a
> ir-test on a clad dime..... after implementing bes
> t EMI mitigation procedures. I was startled. This
> instantly prompted cancellation of my 'curiosity-t
> est'. I immediately commenced detecting this small
> (90' x 80') parcel. In 70 minutes...… I had dug
> 31 coins …… all coins exclusively within the depth
> strata of 10.5" - 12.5" (and no deeper...nor shall
> ower)......….with the newest coin being 1917. EDUC
> ATION #1
> EDUCATION #2 = At the 70 minute mark...…. the dete
> ctor instantly started 'chattering'. EMI. I atte
> mpted to mitigate EMI...… to no avail. I had comp
> leted 90' x 60' of the 90' x 80' parcel of land. I
> still had (and..... to this day...…. still have)……
> a high-producing 90' x 20' remaining strip of parc
> el to complete.
> I have hunted this site 8 times … in my life.....
> thus far.,.,.,.,.,.,., and with various detectors.
> ..… mostly proto's. Collectively..... all 8 hunts
> had produced 7 coins total. Soooooo…… to find 31 c
> oins in 70 minutes...….. is nothing short of stupe
> ndous.
> Is depth important?
> Is EMI mitigation important?
> Is bad mineralization mitigation important?
>
> I have every intent to talk about bad dirt. Need t
> o find the time!
> If you can not mitigate bad EMI FIRST...…. then ba
> d mineralization may be a moot point. . . . . (har
> dly matters). In other words: If you cannot handl
> e the ""AIR""...…. then...….. lowering the coil to
> the ""GROUND"" …… is irrelevant.
> Air first...….. then ground.
And
Seems Anfibio is a deep striker in Fla soil.
Enjoy
NASA-Tom Wrote:
-------------------------------------------------------
> Interestingly..... the CZ is one of the most EMI r
> esilient detectors on planet Earth. Fortunately...
> …. it is a simultaneous multi-frequency unit...… t
> hat performs substantially better in bad mineraliz
> ation...…. than nearly all single freq units; yet,
> certainly...… is not perfect. (And it's a late 198
> 0's & 1990 technology platform). I still retain a
> few new-in-box units in my inventory.
>
> Additional food-for-thought: I tested EQX in Pros
> pecting Mode-2 ...at one of my remote test-gardens
> ...….. with the following air-test results on a cl
> ad dime:
>
> Dec. 03 = 12" in Noise Cancel channel -6
> Dec. 04 = 10" in Noise Cancel channel -6
> Dec. 07 = 13" in Noise Cancel channel -6
>
> No other settings were changed. All parameters wer
> e exactly the same. On Dec. 03 and Dec. 07...... a
> bsolutely zero audible EMI. On Dec. 04..... I coul
> d hear a very slight amount of EMI chatter. Certai
> nly not enough for me to be concerned about. (((Or
> should I be!!))). Can you see were there's 'signif
> icance' in an air-test? Can you see were there's '
> significance' in carrying a spare dime.... for a 1
> 5 second test?
>
> At this same exact site...…. on Dec 09...…. I enco
> untered the following resultant:
>
> Noise Cancel channel '0' = 10"
> Noise Cancel channel '7' = 13"
>
> Soooooooooo………..by virtue of carrying a dime with
> me in the field...…. and taking 20 seconds to test
> the best (top two EMI-free) Noise Cancel channels.
> ... in an air-test; subsequently to witness/experi
> ence a 10" noise-free channel...… and a 13" noise-
> free channel...……. do you think I should then proc
> eed to hunt with the 10" channel???
> Again...… can you see the importance of carrying a
> spare dime with you...in the field?
> Changing MODES on the Equinox...…………. will express
> varying levels of EMI
> Changing Freqs in each individual MODE ….. will ex
> press varying levels of EMI
> The best EMI mitigation channel will not be the sa
> me channel..... for each MODE.... nor each frequen
> cy selection.
> All data holds true for other types/brands of dete
> ctors.
>
> Recently...….. I wanted to perform a curiosity-tes
> t with the Anfibio at a beat-to-death site. I had
> 'finished' this site with the Anfibio…….. with the
> best EMI-mitigation day...presenting 10.5" on a cl
> ad dime air-test. When I showed up on this particu
> lar day..... ready to commence my 'curiosity-test'
> ...…. my initial set-up protocol expressed a 13" a
> ir-test on a clad dime..... after implementing bes
> t EMI mitigation procedures. I was startled. This
> instantly prompted cancellation of my 'curiosity-t
> est'. I immediately commenced detecting this small
> (90' x 80') parcel. In 70 minutes...… I had dug
> 31 coins …… all coins exclusively within the depth
> strata of 10.5" - 12.5" (and no deeper...nor shall
> ower)......….with the newest coin being 1917. EDUC
> ATION #1
> EDUCATION #2 = At the 70 minute mark...…. the dete
> ctor instantly started 'chattering'. EMI. I atte
> mpted to mitigate EMI...… to no avail. I had comp
> leted 90' x 60' of the 90' x 80' parcel of land. I
> still had (and..... to this day...…. still have)……
> a high-producing 90' x 20' remaining strip of parc
> el to complete.
> I have hunted this site 8 times … in my life.....
> thus far.,.,.,.,.,.,., and with various detectors.
> ..… mostly proto's. Collectively..... all 8 hunts
> had produced 7 coins total. Soooooo…… to find 31 c
> oins in 70 minutes...….. is nothing short of stupe
> ndous.
> Is depth important?
> Is EMI mitigation important?
> Is bad mineralization mitigation important?
>
> I have every intent to talk about bad dirt. Need t
> o find the time!
> If you can not mitigate bad EMI FIRST...…. then ba
> d mineralization may be a moot point. . . . . (har
> dly matters). In other words: If you cannot handl
> e the ""AIR""...…. then...….. lowering the coil to
> the ""GROUND"" …… is irrelevant.
> Air first...….. then ground.
And