Treasure Talk blog posts on the GPZ 7000
While depth is relative to the ground conditions a detector is expected to work in, and also relative to the actual detector technology being used, it’s also relative to the interpretive interface making the “call” namely the operator. Chris Ralph, a very good friend of mine, once made a very important observation on camera, he said “It’s not about the gold you miss but about the gold you find”, wise words and very poignant in this day and age when gold is becoming more difficult to find.
I have been swinging the GPZ 7000 19” coil now for over 6 months, so I feel a bit more informed to share some thoughts on the coil, how it compares to the stock 14x13” coil, and what detector settings have been working for me.
The GPZ 7000 has set a new benchmark for sensitivity over a very broad range of gold nuggets. However, a by-product of its exceptional sensitivity to gold nuggets is increased susceptibility to soil anomalies and unwanted interactions with the ground matrix. One such unwanted interaction is with the conductive (salt) elements of the ground.
It has certainly been a busy year for me so far, with not as much detecting time as I would like. Still I have been getting out a little and thought it was time to share a few photos.
My first couple of bits were found with the Minelab GOLD MONSTER 1000 (GM 1000) on some scouting runs. I am liking this detector as a grab and go unit for checking areas out quickly. I am not trying to hunt for max performance but instead looking to cover a lot of ground quickly to check things out. I have learned the GM 1000 auto sensitivity actually suits me well for this. I just fire up the detector in All Metal Mode, full volume, and start with auto sensitivity set at Auto+. Then I just start swinging. If noise intrudes (usually in salt areas), I will back down to Auto (there are just two Auto settings available Auto and Auto+).
Following on from my last blog about the GPZ 19 coil, here some further tips to help you get the best from your GPZ 7000, irrespective of which coil you are using. The GPZ 7000 is not difficult once you come to terms with the way the technology performs over the ground. It is a blend of behaviours which are dictated by ZVT technology, the Super-D coil design and the detector’s ability to tap into the full gamut of target information, thanks to being able to run a very low noise floor without any major trade-offs to audio stability.
With today’s release in Australia of the much anticipated GPZ 19 coil, I thought this would be an excellent opportunity to provide some practical field advice to enable early users to get the best results from this ‘beast of a coil’. I’ve been testing and refining it with the Minelab engineering team for quite some time now, and have to say, it’s worth the wait (weight), in more ways than one!
With the imminent release of the GPZ 19 accessory coil, I thought it was worth discussing its depth capability and how our 30% performance statement was derived. Typically these types of claims are commonly greeted with much concern and doubt, before many are even able to get their hands on the product and test it for themselves. Even then, there are a wide range of settings to choose from and soils to test in, so results can vary greatly depending upon the test conditions. Also, larger objects will typically be detected deeper for the same size coil. Anyway, some background information first…
Recently I took a trip up north to spend a few days detecting with a good friend and Minelab dealer Peter Cragg at Gold City Detecting and his detecting mate with the aim to helping them obtain some hands-on field experience and instruction with the amazing new GPZ 7000 with its ZVT technology.
Following on from Part 1 of this blog which covered how I use a GPZ with GPS to cover ground more effectively, I'd like to share some more techniques and detector settings I use for finding gold with my GPZ 7000.
This year has not been going exactly as I imagined it would. My stated goal for the year was to set a new record for days in the field detecting. So far however, it has been anything but that. No complaint - I have been devoting myself to visiting family and other things that took precedence over prospecting.
I was really eager to get my hands on the new GPZ 7000, as a lot of the functionality was borrowed from the CTX 3030, a machine I know well. I was particularly interested to see the improvements made to the CTX 3030 features and related products.