18/ How to Run “10 kHz” as a Cap / Iron Identifier
A lower frequency like “10 kHz” is what can be called a “plodder.” It responds slowly, makes sure its reporting accurately and only shows a couple of numbers to describe what it sees. When you run “10 kHz,” make sure to give it the time it needs to do the task. Switch over, wait for the threshold to return and make a slow, even coil pass. Just as with “Multi” the first numbers that appear may be cap or gold-range indications--in the teens. However, when you go to the cross sweep (or even a slight angle) the ground becomes apparent in the forum of a ”20 plus” reading. This change will be a lot more definite than with “Multi.” So go slow to let the slower frequency process, use the cross sweep and watch for the “wild” high number indicating a cap or iron. “10 kHz” produces a more defined, more “general” meter response. This response takes into account more of the ground’s signal--making “10 kHz” a great cap identifier. (This is also a great illustration of the dichotomy between what the high and low frequencies actually do).
The idea though is to work on your coil and meter recognition skills so that having to make the change-over is a last resort for only those caps that display a very narrow band of numbers in “Multi.” These are in the minority. I especially go to “10 kHz” where the indication shows “14”--again--a good gold number.
(Note: If you are using the 800, in “5 Tone” a high “Tone Break” of around “19” or “20” will produce an intermittent high tone on caps with this test.
Another interesting lesson to be observed when running “10 kHz” is that if you make multiple passes of a target sometimes the slowed response speed will cause the meter response to “double up”--that is it gives a “cumulative” high number. This is something to watch for in that a response can be falsely “ID’ed” as higher than it is--in this case a worse signal. Referring back to our “coil control pass types” above, this kind of a response comes from making “keep in” passes--instead of letting the target leave the detection field each swing (so as to “reset” the meter). Both have value in identifying responses but it’s good to be aware of the difference.
It’s important to recognise the parallels between this machine and the CTX. With the CTX this “grounded” number comes in the form of a “1” or “30” “off screen” response--indicating iron or steel (non-constancy). I’ve heard these referred to as “cross-feeds” In that they initially sound good as the two parts of the response “connect” on the first pass--but this electrical “join” is then rapidly processed out with subsequent coil passes.
With the Equinox these indications are more centered on the meter--"10” for rusted caps or “20” plus for steel caps. It’s more like where you have a coin next to iron--pulling the response down (or up towards the “wrap” zone). With an analog detector--either of these (CTX or Equinox “outlying” numbers) would be the low tone (or “nulls)” of iron mixed in to the audio response, or a high “sound off” or “false.”
From: "The Minelab Equinox: An Advanced Guide" (2018)
By Steve Herschbach
without the 80 gram scuff cover and 660 grams with scuff cover. The 11" coil weighs 524 grams with scuff cover. Added weight to front of Equinox 136 grams or 4.86 ounces. Equinox total weight with 15" coil 3.26 lbs.
The CTX 17” x 13.5” coil weighs 901.5 grams / 31.8 oz with scuff cover.
Minelab Equinox 12" x 15" DD coil
Put this together this morning for folks.
Btw hot program used on Deus version 5.2,TX power remained at level 2.
Equinox using Park 2sensitivity 24.
These experiments done over medium mineralized soil.
I was excited about getting my Nox 12x15" coil and was hoping it would arrive in time for a trip up to the ski fields to do a detect for some jewellery, I've found the odd bit at the ski fields in the past and end up with a fair collection of coins at the same time so it's an easy day detecting and can be a bit of fun pulling up coins every 20 minutes or so. I'd already planned to do it and then it started raining but because I made the plan, I stuck with it. The drive up to the ski field I saw a weird rainbow, it was a tiny one, it struggled to get up off the ground 🙂
I didn't find anything amazing on the day, which is a bit disappointing as I may as well of been swimming as the rain ended up being heavy the entire day, much worse higher up on the mountain than it was down on ground level, when I drove back down the rain stopped halfway down! Lucky the Nox is waterproof.
I did find someones bank card, an old Cardrona Ski Area badge which is a competing ski field and a free Breakfast at Snowy Valley Resort, I had to look up what that was and it's in Australia and the food has a reputation of being awful which is why someone probably threw the free meal away 🙂
I've taken a more dig it all between VDI 5 and 25 approach lately as I'm trying to find more rings, I was originally just digging coin VDI's and the method is working, I did find a ring that was a very solid 18 on the VDI's, I'm not sure it's of any value, it's not magnetic and has some numbers on the inside that don't mean anything to me, it was about 20cm deep so it's been there quite a while.
Other than the ring I got my usual coins and something that I think is an ear ring. I'm pretty sure the ring is a junker.
Before the next weekend my 12x15" coil arrived for my Nox so I was itching for another ski field detect to compare it to the 11" I usually use. I found it decent, the extra ground coverage was great and sped up the mission, I was able to cover an area in what felt like half the time I took with the 11" I didn't notice any depth advantage and I honestly don't know how I could judge if there was without doing some "testing" burying targets but that doesn't seem viable as I've found coins buried for a long time react differently. It did have a bit more trouble with EMI than the 11", but I guess that's to be expected with a bigger coil. Dropping the sensitivity back two or three notches fixed that up. The ski field is bad for EMI as it has high voltage power for the lifts and Wifi all over the mountain with powerful boosters and a mobile phone tower all right near each other. The other big difference with the new coil is NZ $1 and $2 coins both came up as VDI 21 on the 11", sometimes flicking to 22 on the $2 coins but mostly 21, with the 12x15" the $2 coins are consistently 22 on the VDI's with the $1 being solid 21, I can now tell which coin I'm about to dig with some confidence.
My dealer, DredgeNZ threw in a snuffer bottle and gold pan with my purchase, he's a good guy and trustworthy, certainly not a "used car salesman" dealer 🙂
I did the dig it all approach with the 12x15" also, and recovered a number of coins and a reasonable amount of the usual ski field junk
After my ski field mission I drove down into town to buy dinner and saw a message from KiwiJW asking if I wanted to go for a detecting mission the next day using his EBIKES!!!!! that of course was an excited YES! I have ordered a Steelphase SP01 audio enhancer and it had arrived at my local post depot but as I got home so late at night and was leaving early the next morning for the gold mission I was unable to get it in time for the trip. It arrived this morning, just too late for this mission 🙂
Can't wait to test this puppy out, although I might let John take it's maiden voyage as he'll be better at testing it and also he'll be able to compare it to his B&Z Booster so that will be interesting. It's on charge right now!
I arrived at John's and we threw the Ebikes on the back of his truck and off we went, We went to a place we've done quite a number of times, rarely do we come away with nothing. John mostly does pretty well here, I sometimes get the odd nugget.
The Ebikes made the ride up the hillside much easier, it's still a workout for a guy who hasn't ridden a bike in 10 or so years but I think if I wasn't on an Ebike I would of been pushing the bike up the hill rather than riding. Once you get into more level terrain they really show their ability, you can cruise along with almost no effort at all. They even had a little throttle trigger that you can press and it behalves then like an electric motorbike, driving along without you even needing to peddle, but of course this drains the battery more so you only use it when necessary. I often used it to take off, you know how when you ride a bike the initial takeoff requires a powerful peddle, not so with this nifty little trigger. A BIG thanks to Mrs JW for allowing me to use her Ebike!!!!!! I was silly and forgot to get a photo of the Ebikes!
We started off detecting by going to some old throw out piles I'd never been to before, I don't think John had been to them either, the beauty of the Ebikes is you can go further than you could ever do walking. These piles had powerlines directly above them, I was thinking this maybe to our advantage as it keeps people with their detectors away, John's GPZ handles powerlines reasonably well, my GPX on the other hand doesn't with my coil configuration so I had my Monster with me just in case, and I was glad I did.
The Monster doesn't care about power lines, worst case scenario I had to drop it back to Manual 9 instead of my usual highest setting of Manual 10, but even still that was to make it operate completely quietly, if on Manual 10 I got a bit of broken pulsing noise occasionally from the power lines and wasn't sure if that was causing any harm so I knocked back to Manual 9 just in case, both Auto and Auto+ were completely silent so I assume they were dropping back to Manual 8 and 9. John's GPZ was having a little more trouble than usual with the power lines but it may of been the wind, there was a warm breeze and we've both noticed sometimes wind direction seems to effect the EMI.
The Monster performed well for me, I had found a signal, it was a very faint one so I scraped a bit, the signal then went all the way to the ferrous side so I scraped a bit more and it started to get random readings, a much more positive sign, the more I dug the more erratic the signal became until I got right down to the bedrock when then the signal went all the way to non-ferrous and I was now very hopeful of breaking my skunk. I've had about 6 weeks I think it would be with no gold.
After a lot of messing around trying to recover the target and dropping it in the separation process I eventually found it, a tiny little bee poo bit of gold.
It's to the left of the Minelab Logo on the coil, tiny little thing, you'll also notice a spider took up residence on my coil, not one of the life threatening touch me and you die spiders I'm used to from Australia, a friendly little chap who moved on doing his business when I took my gold off the coil.
The depth was pretty amazing, It was at a depth where my scoop changed to it's handle, hard to see in that blurry photo but it's the only one I got.
All 0.035 grams of it 🙂 but it's official, my skunk was broken!
Another thing we both wanted to do on this mission is find a secret cave, there is one here but it's not easy to find and not marked on any maps or anything, we rode around for a while trying to find it, and then we parked up the Ebikes and went for a walk using John's google maps photo of the area, exploring around trying to find it.
There was a cool looking rock formation in the area
I call it the hotel rock, the old timer gold miners used to use rocks with hollowed out bits for accommodation, well this one was a multi level hotel, with hollowed out bit's all over the place.
We even saw a rock that looked like someone had decided to cut in half with a giant saw
I have no idea how that can naturally happen. We were wandering around for some time trying to find this cave, comparing where we thought we were with the google earth satellite photo and the location John thought the cave was but with no luck so we headed back to where we parked the bikes and you wouldn't believe it, the cave was right next to where we parked up, within 30 feet there were two cave entrances. We rode right past them both to park the bikes! unbelievable!!! John's navigational skills were better than he thought, he stopped right at the cave 🙂
The entrance is well hidden, that's it below me, the little dark hole! We didn't go down in there this time, it was a bit muddy from a massive rain storm we had a few days earlier, the most rain I've had at my place in years. A job for another day, maybe detect the walls of it with the GM 1000 🙂
Next we rode off to find somewhere else to detect, and stumbled across some old chinese workings and some nice terraced walls they had made to get their wheelbarrows up and down into a gully
We started detecting again and John was trying to break his skunk (at this location), the last time he came here he was skunked and spent most of his day exploring, this time I was ahead with my little bee poo so the competition was on 🙂
We spent an hour or two detecting and found nothing then all the sudden John yells out he got one... uh oh, his is no doubt bigger than mine as the Zed can't find bee poo so I was in trouble, he was going to win again!! I've never won in gold tally, it's usually 10 to 1 if I'm lucky but this day I thought I had it in the bag. John had a forgetful day, it happens to the best of us but his was out of control He forgot to bring his gumboots he usually detects in so he has no metal on his feet, but to make it worse he had steel capped shoes on!!! I often found his shoes laying around where we were detecting as he ended up having to detect in his socks Lucky the ground wasn't wet. He also forgot his phone so I was chief photographer, Not a role I excel at as I always forget to take photos.
He also forgot his scoop so he had to separate out his targets the old fashioned way.
It wasn't 2 minutes after John yelled out he got his nugget and I was yelling back, I GOT ONE. I was getting desperate to find another one and scanning the ground wasn't working for me so I started kicking over rocks. This has worked in the past and it worked again.
I put a red circle around my little nugget so it can be seen, tiny little thing for such a big coil.
My biggest of the day, 0.162 grams! Now this brings up a question, this nugget was an absolute screamer, a nice loud "wee woo" even with the coil 10cm above the nugget I get a nice "wee woo" yet this area has bucket loads of shotgun pellets, if I use my Monster I can find one every square meter, yet the GPX wasn't seeing them, yet it screams out loud on this bit of gold which incidently weighs less than a pellet. An example, here is a pellet I found with the GM at the same place
It's bigger, and weighs more yet the GPX with NF 14x9" Evo coil completely ignores it, yet it will find a nugget than weighs less and is smaller in size with a loud screaming signal, so loud I thought I had a 22 shell. I completely don't understand this so if anyone has an idea why, please do tell.
Now it was game on again, I had two nuggets and John had one, we were walking along finding piles to detect on and our detectors had an argument, his was making noises at mine, mine was making noises back at his, then all the sudden mine makes a police siren noise, scaring his detector off... my detector feels a little intimidated by his superior detector so it faked a police siren to scare his off.
It wouldn't even be ten minutes later and John's yelling out he's got another one, 2 for 2... I knew he had won as I had a bee poo, and his would have to be bigger and of course they were. His were .12 & .22 of a gram so he won again 🙂
We called it a day and jumped on the Ebikes and headed back to the car, fastest trip back I've ever had, often we are walking out and it gets dark as it's an hour or so to walk back, we were back in under 10 minutes thanks to the bikes... best time of the day for an easy trip down as we were both pretty exhausted.
To top off John's forgetful day he even left his sunglasses in the toilets at KFC at dinner time
A big thanks again to Mrs JW for the use of her Ebike! Sure made the day a lot easier and more fun and of course to JW for taking me along 🙂
By Mark Gillespie
Well I can say for sure the wireless headphones that come with the 800 model are the best I've found so far. I've been experimenting with different wireless brands of headphones and I've yet to find a single pair that comes close to the performance and minimal lag time compared to the stock phones. Amazing machine.
Minelab Bluetooth / Apt-X Low Latency Wireless Headphones for Equinox 3011-0370