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Anonymous
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David:
Went to the website and checked it out. Thanks for posting it for all to read. Quite frankly, $1,265 dollars for a unit that has only been sold to 1,150 people around the world sounds like somewhat of a gamble to me. Even though they say moneyback guarantee. Most everyone says the same thing, but I believe they are not in the <IMG SRC="/forums/images/flag.jpg" BORDER=0 ALT="USA">, and it might be difficult to hold them to that promise.
Mind you, I'm not badmouthing it all, but for half the money one can buy a Goldquest SS, and know that they are getting a quality unit with great back up and local representation. Just my humble opinion.
HH BJR
Went to the website and checked it out. Thanks for posting it for all to read. Quite frankly, $1,265 dollars for a unit that has only been sold to 1,150 people around the world sounds like somewhat of a gamble to me. Even though they say moneyback guarantee. Most everyone says the same thing, but I believe they are not in the <IMG SRC="/forums/images/flag.jpg" BORDER=0 ALT="USA">, and it might be difficult to hold them to that promise.
Mind you, I'm not badmouthing it all, but for half the money one can buy a Goldquest SS, and know that they are getting a quality unit with great back up and local representation. Just my humble opinion.
HH BJR
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Anonymous
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your probably right BJR, about it being a gamble. but why dosent the goldquest have DISC.?theres no way you can use a detector in the goldfields without DISC.
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Anonymous
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Hi David,
Actually, the Beachscan and the Goldquest have a basic form of discrimination. One has to be careful using it though.
I guess, it should be called a reverse form of discrimination, since turning the delay all the way up, will cause the detector to ignore most typical gold nuggets I find.
When I say a person has to be careful, I say that because not all nuggets will be ignored by the max delay setting. I have half ounce nuggets that will be rejected and a couple of real solid 1/4 oz's that will still sound off. Also, I would suspect that a really large nugget would also sound off at max delay.
I added a switch that allows me to quickly increase the delay to maximum and then test a target. If the signal is not there at the max delay, it usually indicates a piece of gold, lead, foil, or maybe a brass casing. Some rusty pieces of a can can also be ignored.
Obviously, the disc isn't perfect, but it does give a person a better idea.
Personally, I have yet to find a discriminating detector that can't be fooled, and I have tried a bunch.
Reg
Actually, the Beachscan and the Goldquest have a basic form of discrimination. One has to be careful using it though.
I guess, it should be called a reverse form of discrimination, since turning the delay all the way up, will cause the detector to ignore most typical gold nuggets I find.
When I say a person has to be careful, I say that because not all nuggets will be ignored by the max delay setting. I have half ounce nuggets that will be rejected and a couple of real solid 1/4 oz's that will still sound off. Also, I would suspect that a really large nugget would also sound off at max delay.
I added a switch that allows me to quickly increase the delay to maximum and then test a target. If the signal is not there at the max delay, it usually indicates a piece of gold, lead, foil, or maybe a brass casing. Some rusty pieces of a can can also be ignored.
Obviously, the disc isn't perfect, but it does give a person a better idea.
Personally, I have yet to find a discriminating detector that can't be fooled, and I have tried a bunch.
Reg
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Anonymous
Guest
The Goldquest was not meant to replace a discriminating VLF detector, but instead complement it. There is ground too hot for a VLF discriminating detectors to work in. This is where a Pi detector like the Goldquest would be handy to have with you. If your going to take the time to go nugget shooting, one should go with more than one tool. <IMG SRC="/forums/images/smile.gif" BORDER=0 ALT="
">
Mr.Bill
">Mr.Bill
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Anonymous
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A quick push and a sweep & PRESTO! Thumbing the dial is a real pain, especialy if one has digging tools in hand.
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Anonymous
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if anyone can make a PI with effective DISC. YOU CAN!!
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Anonymous
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It's in the works by more than one designer.
It takes time, these things don't happen over night. It's at least 1 1/2 to 2 years away from being a production unit.
The Minelab SD had the ability to discriminate. I'll send you one of those units now if you like. <IMG SRC="/forums/images/smile.gif" BORDER=0 ALT="">
It certainly wouldn't be like the discrimination on a VLF coin hunting detector, but it will tell the difference between iron, and such.
Mr.Bill
It takes time, these things don't happen over night. It's at least 1 1/2 to 2 years away from being a production unit.
The Minelab SD had the ability to discriminate. I'll send you one of those units now if you like. <IMG SRC="/forums/images/smile.gif" BORDER=0 ALT="
">It certainly wouldn't be like the discrimination on a VLF coin hunting detector, but it will tell the difference between iron, and such.
Mr.Bill
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Anonymous
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I realize that it's a bit more involved , seeing as there'd probably have to be a resistor added also, but it's hardly a massive engineering feat. Look at the Shadow with the coincheck...OOOO..big leap forward in technology, eh? Someone could just thumb the dial & get the same effect; but it sells.
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Anonymous
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It has already been thought of. I don
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Anonymous
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Hi Will,
I have added a PB to make a quick change from minimum delay to maximum delay and Mr. Bill is correct, there is a loud audio "bang" that occurs for a brief period while the electronics settle down from the different signal levels. The auotune speeds up the process.
It certainly is faster than twisting the delay each time, but noisier initially. One should have limiting earphones when adding this type of feature.
I have changed the delay using two different techniques and both work fine. However, it does require a good quality PB to assure repeatability. I have already had failures in this area.
It is an add-on feature I personally like because I can check a suspected object quickly, but like I said before, this type of disc feature isn't foolproof.
I have just thought of an idea that might help the initial noise problem, but will have to try it. Unfortunately, I don't think I have the part I need on hand so it will be a little while before I can test my idea. Glad you asked the question, it got me thinking again. (Second time this month, hehe).
Reg
I have added a PB to make a quick change from minimum delay to maximum delay and Mr. Bill is correct, there is a loud audio "bang" that occurs for a brief period while the electronics settle down from the different signal levels. The auotune speeds up the process.
It certainly is faster than twisting the delay each time, but noisier initially. One should have limiting earphones when adding this type of feature.
I have changed the delay using two different techniques and both work fine. However, it does require a good quality PB to assure repeatability. I have already had failures in this area.
It is an add-on feature I personally like because I can check a suspected object quickly, but like I said before, this type of disc feature isn't foolproof.
I have just thought of an idea that might help the initial noise problem, but will have to try it. Unfortunately, I don't think I have the part I need on hand so it will be a little while before I can test my idea. Glad you asked the question, it got me thinking again. (Second time this month, hehe).
Reg
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Anonymous
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Hi Reg, Bill, Will and everybody,
Maybe adding a bit of circuitry would help. If a two pole switch were used where one half shifted the delay and the other half triggered a monostable which clamped the dc amplifier for half a second or so, until the transient had died down. There is already a clamping transistor in that part of the circuit for other reasons, so it would just need the timer output OR'd into it.
Eric.
Maybe adding a bit of circuitry would help. If a two pole switch were used where one half shifted the delay and the other half triggered a monostable which clamped the dc amplifier for half a second or so, until the transient had died down. There is already a clamping transistor in that part of the circuit for other reasons, so it would just need the timer output OR'd into it.
Eric.
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Anonymous
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Is this something that Mr. Bill can field modify? I have a Goldquest SS, and I would consider having it done. That is, if I knew for certain it wasn't going to cause any problems. The unit is fine as manufactured, but that added feature could be helpful. - Bill
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Anonymous
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Hi BJR,
I have been using a PB to change the delay for some time now on a Beachscan and have had no problems.
I just built and temporarily installed what I call a "bang blanker" that eliminates the initial bang that occurs when the timing is changed quickly with the PB.
A very simple schematic has been sent to Eric and Bill for review. It is my understanding that Eric will be gone for a few days so it will take a while before he comments.
In the mean time, I will try get the preferred switch to make mine a permanent change so I can test it more thoroughly.
Reg
I have been using a PB to change the delay for some time now on a Beachscan and have had no problems.
I just built and temporarily installed what I call a "bang blanker" that eliminates the initial bang that occurs when the timing is changed quickly with the PB.
A very simple schematic has been sent to Eric and Bill for review. It is my understanding that Eric will be gone for a few days so it will take a while before he comments.
In the mean time, I will try get the preferred switch to make mine a permanent change so I can test it more thoroughly.
Reg
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Anonymous
Guest
Hi Reg:
Thanks, Bill, has already told me about Eric being on vacation. Glad to hear that you have made it work successfully with the Beachscan. Guess all of that thinking paid off after all. LOL
I will look forward to hearing what Eric and Bill have to say about it later. Meanwhile, have a great spring, and HH. - Bill
Thanks, Bill, has already told me about Eric being on vacation. Glad to hear that you have made it work successfully with the Beachscan. Guess all of that thinking paid off after all. LOL
I will look forward to hearing what Eric and Bill have to say about it later. Meanwhile, have a great spring, and HH. - Bill
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Anonymous
Guest
Hi Bill,
Thanks, hope you have a great spring also.
As for my little design. It is quite simple and harmless, but it seems to do the job. It takes advantage of some circuitry that Eric has designed into his machines. That made things easier.
I really don't expect any negative feedback on my basic circuit since it is so simple, but I may have missed something.
Reg
Thanks, hope you have a great spring also.
As for my little design. It is quite simple and harmless, but it seems to do the job. It takes advantage of some circuitry that Eric has designed into his machines. That made things easier.
I really don't expect any negative feedback on my basic circuit since it is so simple, but I may have missed something.
Reg
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Anonymous
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is it a good metal detector or the best?