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Air test results from a few programs...

C

CZconnoisseur

Active member
Last night in lieu of hunting I decided to do some air testing on some very familiar programs and also experiemented with a couple new ones. The experimental new 12 kHz program I tried is basically the same as "12K COINS" except with reactivity at "2" instead of "3". Look at the max depth gained just from changing reactivity alone! I haven't tried the new 12kHz program but tonight is the night - I plan on hitting the fairgrounds where I found the 9" Wheat last week and giving it a go....

The 4 kHz program tested well in the air arena - keep in mind that reactivity is "4" for this one and it still gets the higher conductors fairly deep, but the aluminum token and nickel suffer...Sensitivity is a little low in this program to help with the "smearing" effect of signals - this is all theoretical I haven't tried this 4 kHz program anywhere yet....This may end up being a "bottlecap killer" in the most severe of trashy areas...time will tell. 4 kHz seems to knock out iron bleed through much better than any other freq

The 15mm aluminum token is "UNCLE SAM'S PLAY MONEY" 10c - some kind of token from the 1950s recently found. Figured it would be a great test coin since it's 3mm smaller than a dime but not quite as conductive.

The BOLD numbers are the VDI reading while the RED numbers are the maximum depth for a repeatable signal, in inches



8K COINS.......................12K COINS...........................12-2 EXP.........................4-4 EXP​

15mm Al token
72 5.5"..............................78 6"................................78 7.5".........................................56 5"​

18mm 90% dime
85 7.5"...............................88 7"..............................88 9"............................................75 6.5"​

19mm Indian Cent
70 7.5"...............................76 7.5"..............................76 9".............................................55 6"​

21mm Nickel
46 6.5"...............................54 7.5"..............................54 9".....................................35 5.5"​

24mm 90% quarter
92 10.5"............................94 10"...........................94 11"............................................87 9"​

30mm 90% half
94 11.5".............................96 11"...........................96 12.5".........................................89 10"​



8K COINS = 8 kHz, Sens = 88, Disc = 2.0, TX = 2; Reactivity = 3, Silencer = 0, Audio response = 2, Overload = 1, Notch 0-22 and 97-99, GB = 85 manual, Ground notch = 85-90, Full tones

12K COINS = 12 kHz, Sens = 88, Disc = 2.0, TX = 2, Reactivity = 3, Silencer = 0, Audio response = 2, Overload = 1, Notch 0-25 and 98-99, GB = 85 manual, Ground notch = 85-90, Full tones

12-2 EXP. = 12 kHz, Sens = 90, Disc = 2.0, TX = 2, Reactivity = 2, Silencer = 0, Audio response = 2, Overload = 1, Notch 0-25 and 98-99, GB = 85 manual, Ground notch = 85-90, Full tones

4-4 EXP. = 4 kHz, Sens = 83, Disc = 4.0, TX = 3, Reactivity = 4, Silencer = 1, Audio response = 3, Overload = 2, Notch 0-30 and 94-99, GB = 83 manual, Ground notch = 84-90, Full tones



ALL TESTS PERFORMED WITH THE 11" COIL WITH MEDIUM emi PRESENT!!! WITHOUT emi ONE COULD EXPECT TO HEAR THE SIGNALS POSSIBLY 1-2" DEEPER THAN I RECORDED.
THE MAXIMUM DEPTHS RECORDED FOR THE ABOVE COINS WERE SIGNALS I WOULD HAVE DUG IN THE FIELD (REPEATABLE WITH OR WITHOUT VDI INFO)
DEEPER RECOVERIES ARE CERTAINLY POSSIBLE WITH LOWER REACTIVITY SETTINGS AND LOWER ELECTRICAL INTERFERENCE!!!
 
CZ, funny I was putting together a 4KHz program today well bc it's 35 and raining.

Anyhow, thanks for taking the time with the test and posting. I would be interested to see how the 4KHz program works with a high SEN and lower RCT.

I did an air test with my new 4 program using a couple of bottle caps and the response was crackling or broken tones.
 
jspeedy said:
CZ, funny I was putting together a 4KHz program today well bc it's 35 and raining.

Anyhow, thanks for taking the time with the test and posting. I would be interested to see how the 4KHz program works with a high SEN and lower RCT.

I did an air test with my new 4 program using a couple of bottle caps and the response was crackling or broken tones.
Click to expand...

May try it out tonight in the worst areas of the fairgrounds. I've heard stories from other detectorists using a Tesoro Tejon (which is apparently fantastic in bottlecaps) who have done well sifting through the junk. It's harder for the lower freqs to recover, but anything to squelch bottlecaps QUICKLY would be a great help.

I remember my CZ-5 wouldn't even peep when you got close to a cap most of the time, however; if there's something beneath the cap that CZ-5 was nulled out anyway. I'm sure with lower reactivity and slightly higher sens you could eke out a little more depth, but I will try these settings first...should have 2-3 hours field time with either the 4 kHz or new 12 kHz program tonight!
 
I've found 4k with a Reactivity of 2 and Silencer at 0 seems to go deep and cuts out a lot of iron. I'd be curious to know how it stacks up against the 12k program. Even though I'm new at this, Reactivity 2 and Silencer 0 seems to a big depth gainer.
 
DukeOBass said:
I've found 4k with a Reactivity of 2 and Silencer at 0 seems to go deep and cuts out a lot of iron. I'd be curious to know how it stacks up against the 12k program. Even though I'm new at this, Reactivity 2 and Silencer 0 seems to a big depth gainer.
Click to expand...

I will give it a try tonight in the densest of trash - I'm a little leery of using low reactivity settings with 4 kHz because of "signal smearing"; but in cleaner ground I would think it would work just fine. It took me forever to get comfortable with low silencer settings, but those 7" plus targets will jump out at you much easier!!!

If I'm still vertical after tonight's hunt I will post a 4 kHZ, Reac = 2, silencer = 0, etc settings against the others!
 
jspeedy said:
CZ, any news?
Click to expand...

Did a short hunt last night at the house next door where I've found a few 6-7" deep coins - in 45 minutes I pulled a 1924 Merc at 4" deep - the VDI was "90-91" in 4 kHz but I dug it anyway- and then rescanned expecting to find something else, but that was it for that hole!

Dug a couple copper pennies that registered at "74", one Wheat that came in around "72", and a zincoln that rang up at "69". All 4 pennies were 2-4" deep, I was really after some DEEP targets but I need the right location for that! I may hit the fairgrounds tonight if my energy level stays where it is...I've also started jogging for 2-3 miles every other day, and when I detect after jogging it really hurts my feet after standing, squatting, and thrusting for 2-3 hours, hence the short (but productive) hunt last night :cool:

4 kHz in my neighborhood is subject to a lot of EMI so it takes a few seconds to resolve candidate deep signals. Thought I had a 9-10" target last night right off the bat, but I dug a large plug and the signal disappeared completely. I covered the hole and rescanned, the signal came back...sounding pretty good...but re-dug the target and it disappeared all over again. Covered the hole and rescanned - and nothing. Checked the vicinity for a surface target - nothing. Checked my Samson and pinpointer for a sticky coinball - nothing...this would be the first "ghost target" I've come across with this detector. The CZ detectors from the 1990s did this occasionally, and it was something I lived with - but this is a first for Deus.
 
Nice additional update. You had a zincoln show up at 69 in 4 kHz?!?! Another "wow" from me. While I hunt in 12 kHz, I almost always check every signal in 4 kHz (so I have developed a good set of "correlated" VDI values btw 12 kHz and 4 kHz), and zincolns are pretty solidly in the 59 - 61 range for me in 4 kHz. I do know that I had one supercrusted zincoln that came in higher, but am almost positive it was still lower than your 69. Might there still be another target in that hole that shifted that reading? Or was that zincoln crusted/corroded? Or do I have to throw everything I "know" out the window? :)
Take care,
Rich
 
samandnoah said:
Nice additional update. You had a zincoln show up at 69 in 4 kHz?!?! Another "wow" from me. While I hunt in 12 kHz, I almost always check every signal in 4 kHz (so I have developed a good set of "correlated" VDI values btw 12 kHz and 4 kHz), and zincolns are pretty solidly in the 59 - 61 range for me in 4 kHz. I do know that I had one supercrusted zincoln that came in higher, but am almost positive it was still lower than your 69. Might there still be another target in that hole that shifted that reading? Or was that zincoln crusted/corroded? Or do I have to throw everything I "know" out the window? :)
Take care,
Rich
Click to expand...

I may have remembered that one wrong, but I DO remember that Merc showing up as a "90-91" in 4 kHz which is closer to a silver half for that frequency. I would venture to say that copper and sometimes silver coins that have been in the ground for many years develop the "halo effect" themselves which can enhance the VDI reading. This is possibly due to copper and/or silver compounds leaching away from the coin into the immediate surrounding soil - these compounds especially when wet (it rained yesterday afternoon here) are electrically conductive, and since the Deus is so sensitive anyway I would guess that this "cloud" of compounds around a target (coins in this case) could make the target appear larger and/or more conductive than the target alone. Just speculation on my part but this may explain why zincolns have a wider range of VDIs than copper or silver coins.
 
If I make it out to the fairgrounds tonight I will do a target-by-target analysis. VDIs won't be accurate sometimes especially with all the junk present at the roller coaster area. We shall see though...
 
I get mostly 72-73 on wheaties in 4 kHz. Have had some variation there, too. Can't speak to IHs (none to my name) or Rosies (with the Deus). I wasn't checking all of my signals with 4 kHz when finding my (few) other silver coins. Pretty sure my silver Washington quarter was an 86-88 in 4 kHz (94 or so in 12 kHz).
Rich
 
Sleepyjim said:
Hmm interesting....

thanks Speedy


Jim
Click to expand...

Found a 1920 Wheat last night that came in at "61-62" in 4 kHz - I will post last night's finds and data tonight; got a couple goodies but again, nothing really DEEP
 
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