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New Report on Aquastar

A

Anonymous

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I found 27 gold items using my CS-7 from January 1st to May 17th this year. Now using the Aquastar, I have found 14 gold items from June 10th to today. And I still have a lot more to learn on using this machine. Eric designed the Aquastar to find small gold and deeper gold. Thanks to you, Eric! This island has become virgin for me again. I am in the process of installing 1/4 inch stainless steel screen in my sand scoops to help catch the small targets. I am able to hunt very near a TV broadcasting tower with no problem. How ever small airplanes will give some electrical interference. I can walk from dry sand into the water without the Aquastar giving a false signal as the loop enters the water.
Terry in Hawaii
 
Hi Terry,
Good going with the Aquastar. Let us know if you find any fine gold chains. This seems to be a problem area with most detectors designed for beach hunting. Due to its higher sensitivity to small items, the Aquastar should be better in this respect, but we won't really know until we find some.
I'm puzzled as to how light planes can cause interference. Are they landing, taking off, or just flying over, and at what height. I wondered whether it was some airfield navigation aid (beacon) that comes on when landing?
Eric.
 
Hi Eric,
Both light airplanes and helicopters flying by seem to cause interference with the Aquastar. I would guess that they are around 1/2 of mile from me and about 1/3 mile up in the air. Where I am getting most of my gold is near the Honolulu airport. I am getting so that I reconize the interference sound made by the light airplanes and helicopters. I then look up and see them flying by.
I hope to find gold chains soon. I did find a one ounce 20 inch long 18K gold chain with my modified SMPI. This morning, I got two gold rings, one of which has 9 small diamonds plus a ear ring with a small diamond. This makes 12 gold items in my last 24 hours of water hunting. Terry
 
Eric, et al,
For what it's worth I pulled a gold bracelet (chain) out of the sand a few days ago with the Deepstar. It was not a high-quality gold (looks to be plated) but it was made up of many small gold "rings" and as I understand it the detector is seeing the small gold rings, not the whole piece of metal.
So, yes, it finds chains <IMG SRC="/forums/images/smile.gif" BORDER=0 ALT=":)">
-J
 
Hi Jeff,
Yes, that is the problem. The detector generates eddy currents in each individual link and because the links are not in good electrical contact with one another, the signal decay time is just the same as one link would be. The signal strength is multiplied by the number of links but it's still decaying as fast as for one link. Some chains have extremely tiny links and although, in total, you may have an amount of gold equivalent to a wedding band, for the above reason it is undetectable. What size links did your chain have? Can you post a picture with a coin for reference?
Eric.
 
I'll do my best to post a picture, as of yet though I don't have a digital camera and I'd have to go through a whole role of film to get negatives for my scanner <IMG SRC="/forums/images/smile.gif" BORDER=0 ALT=":)">
Yes, I'll post a pic, along with some recent Deepstar finds...maybe tomorrow.
-Jeff
 
Hi Terry,
I wish I had a location like yours. This 4th weekend was the first time that there were many at the beach. Went out this morning at 5am hoping to catch the low tide, no such luck. Wind blowing in shore, high tide coming. Should have checked the newspaper for the tides. Used Aquastar with 8" coil for the water, that was OK. Left transmitter on full power, not nice. I
 
Hi Bill,
A couple days ago, I got a 10K gold ear ring post with a hallow gold ball measuring 0.2 inches or 5 millimeters in diameter weighting 0.3 grams. The only other times that I found gold jewelry this small was when I was using a White Goldmaster hunting fresh water beaches. Keep thinking I should get a nice gold chain soon. This morning I got a 14K gold ring with a small diamond. Which bring me up to 20 pieces of gold jewelry found with the Aquastar so far.
Terry in Hawaii
 
Terry, I missed some of the earlier posts, but has any one done a side by side, small gold chain and gold ring test comparing Aquastar, Newforce, and the SMPI? Thanks, Rick
 
Rick,
Perhaps Terry can add to this, but a side by side comparison that would be meaningful to others using a gold ring, and a small gold chain is hard to accomplish, and be such that all could duplicate it. What standard is to be used? My small gold ring, and what others have for a small gold ring may be different from each other. What I like to use for a standard is a US nickel. This does come close to the middle ground of conductivity to low conductive gold items, and is a standard that all can get readily.
A stock Surfmaster has a delay speed down to 22uS., and hits on the nickel around 10". The Eric Foster designed CScope/New Force CS7 at 15uS. delay, hits on the nickel at 12". Both the Surfmaster, and the CS7 are low powered units.
The Aquastar at 10uS. delay, hits on the nickel at 15"/16". The Deepstar at 15uS. delay, hits on the nickel at 14"/15". These are high powered units both in the transmit, and receiver.
The faster the delay speed the more sensitive the detector becomes to smaller, lower conductive items, so certain small items will be easier to detect using a PI unit with a faster delay speed.
This does not suggest that these are the maximum depths that can be achieved with any of the mentioned detectors, just what they approximately did in depth (trying to recall from memory):) using a standard like a US nickel.
Mr. Bill
 
Bill can you run 10uS on a salt water beach or is this an air test, all beaches have different mineralisation.
You won`t detect thin chains if you have to detune the machine.
Regards
Chris
 
Hi Chris,
Yes you can run at 10uS. on the salt beach. If one were to go diving in the salt water in SCUBA depths, that could present a small problem. On the Aquastar just turn it back a bit. Each marking on the dial represents 3uS. Even at 15uS. the receiver is still considerable more sensitive than any other PI detector out there today.
As one can tell I
 
I am running fine at 10uS over here in Hawaii with the Aquastar at full power both transmit and receiver using the 8 inch loop. I wade out in the ocean up to my neck which is around 5 feet deep. Just got back from hunting. Did get a 1942 Mercury dime in a protected area behind sea walls a little over a foot deep. Also continued my gold streak and found a very small 18K white gold ring with a small diamond. The ring size is 2 1/2. To answer Rick's question on comparison of the machines. I used a thin man's 14K ring size 11 3/4 weight 4.5 grams to to compare with. I buried the ring 12 inches in the sand under a foot of ocean water. The CS-7 just barely could pick it up. I used the Aquastar with the 8 inch loop and was able to raise the loop four inches above the sand and still hear the ring.
Also while I was hunting gold nuggets in California. I used a 1.4 dwt nugget that I found to compare the Minelab SD2100 against the Aquastar in a air test. With both machines using 8 inch loops. I was able to get four more inches on the 1.4 dwt gold nugget with the Aquastar over the Minelab SD2100.
Terry in Hawaii
 
Terry,
According to Bill, each click on the reject knob brings up the pulse delay by 3us, so another interesting test (at least as far as I'm concerned) would be to kick your aquastar up to about 15us and then test the same ring against your CS7 and SD. The test would show the difference between high / low power (CS7 vs. Aquastar at about the same pulse delay) and also show how much better the Aquastar is over the SD at different delays. (I'm also interested at how a 15us Deep/Aquastar compares to an SD for a given target). <IMG SRC="/forums/images/smile.gif" BORDER=0 ALT=":)">
Last time out with the deepstar I got a small silver ring, quite small in fact, that was down about 12-13 inches...
-Jeff
 
I believe Eric has an SD2200, so he could perform the comparison.
Mr. Bill... I read somewhere that 3 nickles pasted together would compare to a $5 gold piece. This might be a good test also.
 
The Aquastar is the same power, and receiver gain as the Deepstar. The difference being 5uS. faster delay speed.
Eric owned a SD2200 and did some comparisons with it, perhaps I better let him answer this one.
Mr. Bill
 
Jeff, I will have to wait until next Wednesday to compare the CS-7 and the Aquastar at 15 uS. Since that is the only day I can run the CS-7 at 15 uS. In a way it is not a true comparison because the CS-7 has a 9 1/2 inch loop and the Aquastar has a 8 inch loop. I do not have a SD2100 here to use.
Did get out this morning and got a real thin 14K gold ring with a fake diamond and a large 14K gold ear ring.
Terry in Hawaii
 
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