You are not logged in.

  • Register to access all forum features  

#51

Bacchus
Member
From: , SA
Joined: 05 November 2014
Posts: 847
Member
05 July 2017 07:28 pm

Still reckon the green button is there for cosmetics only wink like T on a B not really required with the excellent constant tracking capability of the SDC smile


Minelab SDC 2300

1 user likes this post: Retirement Stone

#52

Bush
Member
Joined: 24 January 2016
Posts: 52
Member
05 July 2017 09:08 pm

Mate ! #50 mbasko thank you ! & #50lbs mbasko!!!!
Thank you for responding & thank you for the support previous.
`i` would like to tell you personally about what i have here!
This 2300SDC. mmm in Question .Modified.

Other interest here . Minelab , Coil Tech , Woody Alan ect . may not like what i have to say here.?
``but``i will say that in correspondence recently with Minelab concerning a GPXC4500.
Their response or Mr Mine-labs response to me was totally professional & polite /
Sucking up here.
.Moving on now/:}ML.
`i`posted a Post earlier Cyber Space i think it went.PA.
`i` found another Coil that runs OK with this SDC.2300.
YES ! a Bigger Sucker ! Coil.
it Seems tobe stable on the beach so far an hour or two no issues.Stable.Salt settings 1 -3.
Recently got my first target of any value outside side of boot tacks, musket ball shot & horse shoes/bullet casings..did `i` mention..
ye hah ! ! Gold on the beach.
`.i`` found a decorative pin/badge with some foreign logo stamped on it.10`` under ,non_magnetic.
Ye Hah !
`i` have another question. Techno support please.
`i` believe there are three wires running to a coil can anyone contribute to how this works.
Power in / Power out but why is an earth lead needed when it is connected to the `i` think i noticed - neg terminal of the unit at the junction
of the multi pin plug.
Support please ! Techno enthusiasts.,
comments welcome.
Cheers.

#53

mbasko
Member
From: Central West NSW
Joined: 27 January 2015
Posts: 3,764
Member
06 July 2017 11:39 am

I'm no expert on coil wiring but if you're seeing 3 x wires they are likely to be 1 x tx (transmit), 1 × rx (receive) & the 3rd could be a shielding wire to help keep it stable?


Everything we use comes from mining or farming.

#54

Bush
Member
Joined: 24 January 2016
Posts: 52
Member
06 July 2017 06:17 pm

Thanks again for the reply Mbasko and Bacchus.
It all helps with my learning and understanding of which i enjoy.
`i` Must apologize for the previous post had a few moonshines last night that and my night vision is not so good.
Excited a little that i got the OK from some Big Guns on PA about the ground tracking balancing button lead detached.
Q1.Just wondering also would you still pump the coil up & down above the ground a few times to balance the unit.?
Q2.I`m also wondering would there be any advantages or dis-advantages with such a lead to the green button detached.. ?

Q3.Also back to the coil lead topic ( my flight thinking )
There was a small lead in the adapter connections that was made up by a previous Techno to fit the standard GPX coil plugs.

The lead earthed the two metal terminals by bridging them but also at the unit end connected back to the -neg terminal.
On examination that lead fell apart.I rewired the + and - leads but could find no reason to establish that earth bridge especially when basically the unit is double insulated. Correct `me if i`m wrong.
The unit now seems to be running stable although it has not yet been tested on mineralised hot ground.

#55

Bush
Member
Joined: 24 January 2016
Posts: 52
Member
10 July 2017 08:26 am

Business Policy and Politics.
Rumors and Gossip.
That about sums it up really.IMO.
Just one other thing if you hear a rattle in your SDC it maybe that a magnetic wiring filter has become dislodged.
Send it to Minelab and leave your sealed Id sticker on.
Yes i have opened the unit up for inspection and found the modularity quit impressive. DAYOR- ( do at your own risk.)
I was hopping to attempt the fitting of a single pin headphone connection plug but as much as it could be done there is little room and lessor room for error.
Phasetech adapter lead is probably the best alternative.
As far as the 3rd coil `i`ve discovered that the SDC2300 is excepting i`m not going to reveal what coil this is.
Politics hey Grechie.
` i `did some air and ground testing with some impressive results but it would seem as with the 12``NF that sub gram target depths have been reduced.
I did notice on another site that a 11`` Double D coil has been fitted to an SDC it maybe a hoax.
By the way the new 12`` evolution was not a candidate for this unit.

.

Last edited by Bush (10 July 2017 09:05 am)

#56

Bush
Member
Joined: 24 January 2016
Posts: 52
Member
18 May 2019 11:01 am

SDC 2300 with Nugget Finder ``16 round Coil.

``16 NF coil testing on SDC2300.
Setting No 5. 0.3 gram @ 75mm. but detector became unstable after 10 mins.
Setting No 2. Stable over 1/2 an hour . 0.3 gram & 0.6 gram @ 50mm to 300mm.

#57

AuMan
Member
Joined: 16 March 2014
Posts: 126
Member
02 June 2019 11:12 pm

Bush wrote:

Mate ! #50 mbasko thank you ! & #50lbs mbasko!!!!
Thank you for responding & thank you for the support previous.
`i` would like to tell you personally about what i have here!
This 2300SDC. mmm in Question .Modified.

Other interest here . Minelab , Coil Tech , Woody Alan ect . may not like what i have to say here.?
``but``i will say that in correspondence recently with Minelab concerning a GPXC4500.
Their response or Mr Mine-labs response to me was totally professional & polite /
Sucking up here.
.Moving on now/:}ML.
`i`posted a Post earlier Cyber Space i think it went.PA.
`i` found another Coil that runs OK with this SDC.2300.
YES ! a Bigger Sucker ! Coil.
it Seems tobe stable on the beach so far an hour or two no issues.Stable.Salt settings 1 -3.
Recently got my first target of any value outside side of boot tacks, musket ball shot & horse shoes/bullet casings..did `i` mention..
ye hah ! ! Gold on the beach.
`.i`` found a decorative pin/badge with some foreign logo stamped on it.10`` under ,non_magnetic.
Ye Hah !
`i` have another question. Techno support please.
`i` believe there are three wires running to a coil can anyone contribute to how this works.
Power in / Power out but why is an earth lead needed when it is connected to the `i` think i noticed - neg terminal of the unit at the junction
of the multi pin plug.
Support please ! Techno enthusiasts.,
comments welcome.
Cheers.

The three wires are,
red= coil ground
black = coil transmit
yellow= receive

I have here an sdc2300 for repair(it is repaired) and the owner has given his blessing to investigate what modifications might be useful for it.
Once warranty runs out on these units, genuine service is a bit of a worry.

Cheers Mick

#58

Bush
Member
Joined: 24 January 2016
Posts: 52
Member
03 June 2019 08:31 am

G`day AuMan,
Thanks for the wiring Color Coding.
With this Unit the SDC adapted connector cable plug to standard gpx coil cable plug.
The SDC and GPX series are different mirco 5 pin on the SDC and 6 pin on GPX from memory.
There was an additional wire placed bridging the connectors on the outter side of that plug. Modified
An extra Earthed lead i believe so to speak.
When i tested the plug pins i realized that one of the connector pins earthed the two plugs any how.
So I removed that external wire to see if there was any variables.

I now have opened up the standard SDC 8``coil hoping to install a new cable.
It now seems that to reconnect new wiring to this coil may not be achievable although i have not probed into or under the foam seals to the terminals as yet.
It would seem that i will have to splice the new wires to the original wires but under the coil covers is my preferred choice.
Not shore what or how this will effect it`s performance.Continuity ect.

What i have discovered is these SDC units are so sensitive that even running your fingers around the plug connections without contact can send signals to the unit.
Possibly the small amount of electricity that runs our human body these units will detect.
Basic insulation tape around these fittings i find is not substantial. cry

1 user likes this post: Wishfull

#59

Bush
Member
Joined: 24 January 2016
Posts: 52
Member
03 June 2019 09:46 am

In relation to the above.

Quote ; SDC2300 And Coiltek 14 x 9 Finds Thread (First Day First Gold)
Started by Bacchus..
Using the standard 8``coil.
False Signals.
My thought here is the spring loaded Wiring that enables the shaft length extension where cables are normally fed through the inside of the shaft.
With this one the curly sprung cable is running on the outside from it`s modification.
I think the breeze vibrates the cable at times causing the unit to become a little unstable from too much vibration.Confusion my guess.
I do get a lot of false signals when that cable is bumped on bushes ect.
The cable now is looking a bit shabby so i`m going to attempt to open the standard ``8 coil up and re-wire with straight cable and maybe feed the wires up the inside for more protection.

#60

Bush
Member
Joined: 24 January 2016
Posts: 52
Member
03 June 2019 05:09 pm

Bacchus wrote:

Still reckon the green button is there for cosmetics only wink like T on a B not really required with the excellent constant tracking capability of the SDC smile

Time to let The Cat out of the Bag.Ha Ha !
Quite Correct Bacchus.
On Internal Examination i could find no connections of wiring that lead to the Green Button.
So it sort of makes me laugh that people are holding down the Green Button pushing and lifting to ground balancing the unit.
If anyone is in doubt of a troublesome button i`d say don`t worry about it.
Cosmetics from Mine Lab is my thoughts.
Maybe Minelab placed it there in the event it was needed.
Maybe a Minelab Representative wondering on this site may like to comment.
Now Who`s pressing who`s buttons .lol. tongue

#61

mbasko
Member
From: Central West NSW
Joined: 27 January 2015
Posts: 3,764
Member
03 June 2019 05:57 pm

Hi Bush - just wondering if you've managed to pick up any gold with this modded unit over the past ~3years?
Are you 100% sure there's no wires to the button? There's a number of wires in that area & 2 should be for that button. Your previous questions about the button & wiring led me to assume you thought they had been broken or disconnected previously on your modded SDC?
I'm certain that it does what Minelab says (fast track button) as I've now owned 2 different SDC's & if becoming erratic the fast track button + pumping has settled it quickly on many occasions although using it periodically in normal detecting is IMO largely not necessary.
If the button isn't connected (doubtful) then the process of pumping the coil with the constant auto tracking must work well.


Everything we use comes from mining or farming.

1 user likes this post: Bush

#62

Bush
Member
Joined: 24 January 2016
Posts: 52
Member
03 June 2019 07:00 pm

Hi Mbasko,
Great to hear your still kicking.
`mate` when i probed inside the unit some time back.
I noticed there was no connection to that button.
There were a couple of wires one to the Noise cancellation and threshold and low battery indicator.
I traced all the wiring thoroughly.
I at first thought it may have been chopped as part of the modification.
This is why i announced it earlier as if it was not working would the unit still work.
You validated that it would and i accepted your comment.
I have viewed that area with a magnifier glass and could not see any penetration holes that would lead me to believe that any wiring was in place.
That area leading to that button is a seal type of poxy resin no indication At All that any wire was present.
This is why i was so happy when you stated that the unit would still work.
From Bacchus comment earlier in the piece sort of validates what i`m suggesting.
Great to have you back Mbasko i may jostle and joke around at times but i don`t tell lies. angel

Last edited by Bush (03 June 2019 07:01 pm)

1 user likes this post: mbasko

#63

Bush
Member
Joined: 24 January 2016
Posts: 52
Member
03 June 2019 07:18 pm

mbasko wrote:

Hi Bush - just wondering if you've managed to pick up any gold with this modded unit over the past ~3years?
Are you 100% sure there's no wires to the button? There's a number of wires in that area & 2 should be for that button. Your previous questions about the button & wiring led me to assume you thought they had been broken or disconnected previously on your modded SDC?
I'm certain that it does what Minelab says (fast track button) as I've now owned 2 different SDC's & if becoming erratic the fast track button + pumping has settled it quickly on many occasions although using it periodically in normal detecting is IMO largely not necessary.
If the button isn't connected (doubtful) then the process of pumping the coil with the constant auto tracking must work well.

Further more;
No gold found Mbasko not as yet.
Not for the lack of trying.Found just about everything else but.
See i`m not quite out there yet. A few adventures in toll.
What i said to myself is that i`m not going to get old and spend my time drinking in a bowling club day in day out.
So this Prospecting thing i`m still gearing up for.
So i`m still busy finishing renovations on my home.
Restoring and fitting out an Arkana 75 series 4WD to travel in.
`i` have the detectors to get some practice in prior departure.
Not shore when but that is my future goal.
Life`s short and i have not done a lap around OZ yet.
Check out me mate on You tube.Get down and dirty prospecting.
He`ll probably be doing the tour too.

1 user likes this post: mbasko

#64

AuMan
Member
Joined: 16 March 2014
Posts: 126
Member
05 June 2019 10:19 pm

Hi Bush,

It sounds like the coil plug has been wired correctly.

The false signals from your hand happen because there is no shielding around the control box and the capacitance from your hand has an effect on the coil receive.

With the breeze causing your machine to become erratic, that is a thing and it happens to all ML detectors.
Those curly cables will also cause some false signals as they compress or stretch out.

With your standard coil, you will have to try and source some proper mono coil cable. I think Coiltek in Maryborough may sell it, however it could be a bit of a job to get it all installed and everything working right.

With the GB button, it is indeed connected. The cable that goes up to the control panel, first connects to the gb button, then 'T's off to the control panel. There are 2 wires at the plug inside the detector and 3 wires that go to the control panel, one of which is connected to the GB button(and ground). The controller in the control panel must be capable of one-wire communication as well as receiving its power from that same wire, quite nifty really!

I have now bench tested a range of coils on the SDC.
The Sadie coil is a good contender to replace the stock sdc coil.
The 12" Nugget Finder Advantage might work ok.

If using a coil that is not properly suited to the detector you will find that it may pick up ground noises that aren't normally there and a loss of sensitivity.

The thing is, in its standard form, the SDC is optimized for small gold and small coils.
That being said, I have made some tweaks to this one I have here and can even get it to run a Nugget Finder Advantage 25" coil!

So, during the long weekend, I will be doing some field testing running the SDC with various coils. Perhaps it will be a total failure, however I don't think it will be. I am very interested to see how it behaves and hopefully capture some useful footage gold-nugget

BTW, I know the word "mods" has a bitter taste to it, but that was nothing to do with me cool

Cheers Mick

3 users like this post: Ded Driver, 10fp, Bush

#65

Bush
Member
Joined: 24 January 2016
Posts: 52
Member
06 June 2019 05:31 am

Thank you Auman,
I really appreciate the input forwarded here.
`i` find myself extremely lucky to receive correspondence from yourself and members on Prospecting Australia.
Coiltec did help me out with some cable but don`t tell anyone as it maybe against their policy.
The cable though is a little different from Minelabs Standard.
Coiltec`s has it`s 3rd wire insulated / shielded maybe finer in gauge also multi stranded.
So i don`t know the up`s or downs in tolerances ect. Should be better my thoughts.

Just wondering if anyone knows if i can reconnect the cable to the coil base connections without splicing the new to the old.
I`ll also have to make up some new conductive pads for the coil.
Found some carbon laying around.Left overs from distilling filtering system.
`i`ve tested its conductivity and it seems very responsive.
I have ground it down to a powder.Now just have to find the right liquid solution mix ratio to paste on to the new pads.

``In All`` the work carried out modifying the head shaft fitting ( prior my owner-ship of this detector ) to adapt other coils was actually quit impressive.
It would not have been an easy task cutting and re-shaping that fitting knuckle to achieved the adaption.
Even the re-wiring in it`s self is an accomplishment as it`s operations is like micro surgery and not for the faint hearted .
` i base these comments on 37 years as a carpenter/builder and some electrical apprenticeship studies.
Unfortunately `i` failed in the lab work examinations.Tough calculations they were.

Not shore about the 6`` sadie coil when i first tested the variety of coils that one did not respond very well.`i` may try it again later some time.
Still would love to find a large Spoke Coil that responds to the SDC2300.
That ``16 NF `i` find tiresome in weight.Not totally verified working order on mineralized ground as yet.
Hope you have some positive results over the long week-end with the coils Auman.
I think we are All awaiting more test results. thumbsup

#66

AuMan
Member
Joined: 16 March 2014
Posts: 126
Member
09 June 2019 10:40 pm

So, the Sadie coil, bolts up and finds gold! Literally put the coil on the detector, fired it up, put it on the ground, weeeoooo. Nah, gotta be a pellet. Cranked up gain a bit just coz, oh that brightens it up some, take a scrape, out, in my hand, 0.03g tiddler! Unfortunately I couldn't keep that kind of run going!
The Sadie worked no problems at all, same with the 12" advantage, with the detector in stock standard settings. Found a small piece of lead shot with the 12" at an inch or two, gain was up a bit.

The 16" 18" and 25" Nugget Finder Advantage coils worked well with my frequency mod, along with the gain. Salt timings seemed to give better depth on my 8.6g test nuggy and was very comparable(I ran the same coil and test on a 4500) to a 4500 running enhance. Testing was done at Avoca in some not so mild ground and I was really impressed with how well the sdc maintains its ground balance.
Unfortunately I didn't find any targets with the bigger coils on as the area I was at has been hammered to death by every man and his dog! However, seeing how it handled the ground there gives me confidence that it would. If anybody has a spare patch with some golf ball sized nuggets in it that they want to give away I'd be more than grateful angel

1560080199_img_3446.jpg

5 users like this post: grubstake, Ded Driver, 10fp, Bush, Mackka

#67

Eski
Member
Joined: 10 May 2015
Posts: 213
Member
10 June 2019 12:27 pm

Good stuff Auman, so frequency and gain mod .... any filtering changes to make it smoother? and how did you go with the 12 inch evo?

how did it compare to the f1a4L3

#68

AuMan
Member
Joined: 16 March 2014
Posts: 126
Member
10 June 2019 01:30 pm

Hi Esky,

I haven't done anything as yet to make it smoother, that is the next job on the list. It is the one thing about the sdc, it's a chattery little thing! In fact, it is also quite heavy, it feels much better balanced with an 18" coil attached to the end!

The only Evo tests I have done so far were on the bench and for some reason it doesn't like them, I didn't try them on the ground. I haven't delved into the transmit and damping circuit on the sdc yet, I suspect there are some differences there.

The F1A4L3 is a hard detector to beat! That nice smooth threshold and sensitivity just gets me every time. It still detects a 1.5g specimen I have here much better than the sdc. If the SDC can be quietened down then things may change...

Cheers Mick

2 users like this post: Ded Driver, 10fp

#69

Eski
Member
Joined: 10 May 2015
Posts: 213
Member
10 June 2019 07:45 pm

Cool , the SDC is a neat lil package that could be great if it got some depth and stopped being chattery...
Good stuff. may the gold be with you.

#70

mbasko
Member
From: Central West NSW
Joined: 27 January 2015
Posts: 3,764
Member
11 June 2019 03:48 pm

The SDC is great now for those who get to know it!


Everything we use comes from mining or farming.

1 user likes this post: Bacchus

#71

10fp
Member
From: Adelaide
Joined: 16 December 2015
Posts: 146
Member
11 June 2019 04:01 pm

Great to see Mick working on mods for it

Last edited by 10fp (11 June 2019 04:02 pm)


Sdc , 4500, NOX 800, QED

#72

mbasko
Member
From: Central West NSW
Joined: 27 January 2015
Posts: 3,764
Member
11 June 2019 05:03 pm

10fp wrote:

Great to see Mick working on mods for it

Looks like people want it turned into a GPX to me?
The SDC is superb at what it does & those who know it well do very well with it as is - no mods required.
Want a smooth machine with interchangeable coils + better depth then your better off selling the SDC & buying a GPX. thumbsup


Everything we use comes from mining or farming.

8 users like this post: grubstake, Aussiedigs, Eluvial, brucee, RM Outback, Booney, madtuna, Bacchus

#73

Bush
Member
Joined: 24 January 2016
Posts: 52
Member
12 June 2019 04:54 am

Well the mechanics did the tweaks to small 4 cylinder motors to match up the speed to the big V8`s .
Anything is possible but at what expense.
RPM vs Torque in that case.
What i haven`t noticed on comments on using the SDC2300 but mentioned earlier on this post when i attempted depth tests on various coils.
Is when over the deeper targets and the sound signals faded out in depth.
There was still indication on the lights on the instrument panel control box indicating a target.
Not something one would normally notice as we tend to focus on the sound while our eyes are on the ground sweeping.

1 user likes this post: Eski

#74

madtuna
Member
From: , WA
Joined: 12 December 2012
Posts: 1,897
Member
12 June 2019 12:18 pm

mbasko wrote:
10fp wrote:

Great to see Mick working on mods for it

Looks like people want it turned into a GPX to me?
The SDC is superb at what it does & those who know it well do very well with it as is - no mods required.
Want a smooth machine with interchangeable coils + better depth then your better off selling the SDC & buying a GPX. thumbsup

Spot on!

Have been following with interest a bloke here with an SDC and the new 14" x 9".

Using my standard SDC I located 6 targets for him, 5 were gold and 1 was a tiny chip of a loader bucket. We could not hear 4 of the gold targets. The 1 gold target we only heard because we knew it was there, the bucket chip was clearly heard.
No way would the nugget we did hear have pulled us up had it not been located first.

On this same spot I found 12 more small pieces that day while he found none.
The bigger coil certainly loses the sensitivity of the standard coil and he's pretty confident he's not getting bigger bits at depth either that he's getting with his 5000.


If guns kill people, cutlery causes obesity. Sporks should be Cat D and have no place in suburbia
https://www.youtube.com/channel/UCL9zIt … KCVngVrjg?

6 users like this post: Booney, Rockhunter62, RM Outback, grubstake, mbasko, Eluvial

#75

Bush
Member
Joined: 24 January 2016
Posts: 52
Member
12 June 2019 06:09 pm

Yep ! Seems to be the case.
Today the over head power lines were shut off most of the day.
So i decided to place the ``16 NF on the GPX4500 and sweep around the paddock.
Placed markers on around a dozen targets ``not`` that i believe there`s gold there.
but more so probably old farming bits and pieces.
Then swapped that ``16 coil onto the SDC .
At least half of the targets i would have walked over.
Maybe with the headphones on the SDC it may have had a chance.
`i` believe the ``12 NF would have but i have not dug`em up yet for any depth test.
Power is back on now so GPX is out of the question.
Try again with the SDC with ``12 NF to see where it`s at.
Cannot compare the standard ``8 coil as repairs are not accomplished yet.
Living in Hope. brokenheart


Contact Us - Privacy Policy - Terms Of Service

View Desktop Site

Top