Sven1

Funny thing, I never used to thumb the disc control. Because of the composition of Canadian clad coins. Especially when they are on edge, have to keep the disc setting low and listen for a one way signal. The Eldorado has always been my first choice, with the ED180 disc.

I needed a fix.......................picked up for myself a nice Tesoro Eldorado umax and Bandido II umax. Both work perfectly.

That's a tough one to find.

I think it can be converted to 6 pin. If I remember right they went to 6 pin as some were having trouble screwing on the 5 pin. Check with Rosi at DeepTech

Just rejoined, like Carl said, all I see is some spam posts. About the only forums I visit these days is Steve's and the Compass Forum.

JR is right about the Vista X, excellent detector overall. You will take to it in short order since your already a Tesoro fan. You'll find a nice up from the Golden.

Weather permitting, over the next few weeks will try a 100-150 year old farm field that is not polluted with foil and aluminum trash. May find some relics or coins lost by the loggers or from the settlers. Maybe a better enviroment to try the NFD90 at. Just a lot of hot rocks to deal with in many of the fields.

In modern sites with lots of foil and aluminum canslaw and no disc to eliminate it is not fun to hunt in with any detector. Just too bad too many people have no respect when it comes to properly disposing of their trash. Next time I head down to Buffalo, NY if there is no snow or ice will give it another test. Soil conditions are different and will have to locate some old ground.

After a couple days of field testing the NFD90 in our soils it is totally different than testing on the bench. Reminds me of a Garrett Ground Hog air and field testing in the red clay soils when living in Georgia. The GH had superb air tests in TR mode, just couldn't get any depth in actual soil hunting. I experienced the same with the NFD90 in our Canadian sandy dirt soil with some magnetic sand mixed in. In static mode, NFD90 was too sensitive to changing ground conditions, like the old VLF/TR detectors in TR disc mode. Was constantly adjusting the tuning to compensate. In Dynamic mode it was more stable due to its auto tuning. Quarter coins barely made any threshold changes at 4", nor did pull tabs. Any other targets, were loud and could not determine size of the target. Canslaw, small, foil, crunched up foil was driving me crazy, at 4" it was still loud in Static mode. If I switched to Dynamic mode, they sounded more like good targets. As for finding iron, did not find any nails, hairpins, wire. Just some deeper steel cans and bottlecaps at 4". If there would have been a coin type object near one of those pieces of iron, they would not break thru the threshold null the iron creates. I am concluding the NFD90 is not the ideal detector for coin and jewelry hunting in schoolyards or parks in our part of the world. In other parts of the country and USA, the soil conditions might better suit the NFD90. Just want to add that not all brands or models of detectors work well here in Canada made before 2010 but, are found to be superb detectors in the US.

On the bench, my vial of black magnetic sand will cause the detectors threshold to null and not pick up gold jewelry etc. that can't break the threshold null. If I tune to the vial of black sand and hold the vial under the coil, pass a gold ring coin etc. under the coil, the NFD 90 has no problem punching thru the black sand and getting a positive target response. Note this is on the bench--testing. Not real world test.

He is an independent electronics engineer who has been in the hobby a long time.

I'm not obligated in posting positive reviews. The unit was not free, four of us did have to pay for the units, the price was right and for a worthwhile cause. The NFD 90 will be probably be a niche detector and not suited for the masses. It's something a bit different for those who want to get back to basics. Will be interesting to see how it performs.

I think these videos will give you an idea as to its potential. https://www.youtube.com/@exbasy My main use with the 9" coil is magnetic black sand mixed with dirt soils. Looking for coins and jewelry within the first 7" of the surface. While ignoring iron trash. Might just make for a great Competition Hunt machine. ------------------------------------------------------------------------------------ Bench testing, proves to be a very interesting detector. Very respectable air test depth. Single 10 turn tuning-threshold-sensitivity control. No-motion and motion toggle switch. LED bar graph that helps with ground tuning. Threshold super stable like the vintage Garrett Master Hunter 5khz in all metal mode. You can hear the slightest target threshold change. Loves all non-ferrous targets. Think it could work well in iron nail trash areas picking out the good targets. Like some detectors in all metal mode, no disc, might be a challenge in modern trash and foil littered areas. Appears easy to size a target and to pinpoint. Audio volume of the target found gives indication of depth and size. The NFD90 shares roots with many vintage and modern machines, combining them into one basic work horse machine. If you have been hunting with detectors since the 1960's, it will give you a familar feeling. Just feels part VLF, TR, BFO, Pi wrapped into one. ========================================================== Carl Moreland is having one made for him, should be arriving in a few weeks.

Latest metal detector to try out. Experimental unit out of the Ukraine made by Alex. I mounted the control box on a White's s-handle, Fisher armrest and Fisher lower tall man's rod. Very light weight. My unit is set up a little hotter. Hopefully the weather will cooperate Saturday for a field test.

I have unit #2 coming shortly. Final testing and calibrating. When the control box and coil arrive, have an s-handle set up ready. Will get it out in the field before the snow and ice arrive.