Sven said:
With the Nokta Impact running 5Khz and in deep mode using the new 7" concentric search coil, it catches the deeper clad dimes and quarters others have missed ...
The impact, like my CoRe and Relic devices, has an excellent circuitry design that lets me find a lot of missed targets where others have searched quite a bit. A combination of very functional depth-of-detection with most search coils for them, and a great ability to respond and recover to nab keepers that have been masked or partially masked from those who searched before me.
The detector's designed performance abilities are now complemented with this excellent 7" Concentric coil. I had some distractions yesterday that kept me from heading off to some ghost towns where iron nails and rusty tin are very dense and challenging. I only got in some successful Coin Hunting working the fringe area of an old park. I still do the bulk of my hunting with the Impact at 14 kHz, but quickly shift to 20 kHz when I get by the Makro Racer users that share the same frequency. I do opt for 20 kHz as desired for certain sites, just like putting 5 kHz to work in the sparse-target open areas when I can chase some missed higher-conductive coins that might be located a bit deeper than most folks can reach.
Usually I have mounted the 5X9½ DD or standard 7X11 DD for such tasks, but this 7" Concentric is behaving exactly like a decent Concentric coil should and I am getting more than satisfactory detection depths in cleaner areas.
Sven said:
It's the perfect size for some precision hunting. Works excellent.
Totally agree, and that's partly because it is a Concentric design and provides some if the advantages some of us want over a Double-D designed coil. I knew from the start with using Nokta detectors, I was wanting a smaller-size but effective and efficient size smaller Concentric coil. It could be anywhere in the 5½ to 7" size, and I prefer a 6" to 7" Concentric coil for the bulk of my detecting, and this new 7" Concentric mated to the Impact is just about as
'perfect' as you could want.
A big enough appearance to let you feel confident you're getting enough workable coverage, yet small enough to handle working in and around typical trashy environments in most urban Coin & Jewelry Hunting applications. You get all the audible and visual benefits a decent Concentric coil can provide, such as a better talent for sizing-and-shaping targets, quickly and accurately Pinpointing located objects, the wonderful ability to stand in one place and work the search coil from any direction and get more of a uniform response that a DD coil can't provide. You get the consistent response from a left or right sweep a DD can't do, and when it comes to handling those pesky crown cap type bottle caps, you get the perfect handling we have come to expect from a quality designed Concentric coil.
Sven said:
Surprised how well it worked with all modes and 5,14 and 20Khz frequencies. Gain could be turned up full bore, settled in hunting at 85%. Pinpointed nicely just like a concentric should.
My saved programs in my Impacts, as well as Relic and CoRe models, have Di3 at '99' Gain at turn-on. I reduce it if it is necessary to gains stability, but most of the time I am hunting away from some of the disturbances found in urban settings and I very, very seldom have to reduce the Gain setting. Most of my other modes are saved with a Gain of '95' at start-up. The 7" Concentric is very stable, and as you mentioned, the 7" Concentric handles all search modes well at any of the three operating frequencies chosen.
Sven said:
The Impact with this coil ran like a champ, very smooth operation, ..
Yes in deed! The Impact/7" Concentric team work great. Now I'll click and post this response and I am headed out the door to a couple of old gold mining era ghost towns and work this new 7" Concentric coil in some of the nastiest iron littered sites that abound in square nails of all sizes and rusty tin, from small decayed shards to can-size. Today I'll know how the 7" Concentric works in those sites where I have used all the other Nokta coils on the Impact so far.
No doubt in my mind that this
'perfect' 7" Concentric coil is likely going to handing things quite well.
Monte
