NAME SOME OF THE BEST DETECTORS OVER THE YEARS

pegasus

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	Re: NAME SOME OF THE BEST DETECTORS OVER THE YEARS « Reply #10 on: November 05, 2009, 04:08:05 pm »

Just wondering, if you had to pick one and one only, which one would you go for

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dgerst

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	Re: NAME SOME OF THE BEST DETECTORS OVER THE YEARS « Reply #11 on: November 10, 2009, 01:09:13 am »

I'd have to include the Discovery Electronics Treasure Baron Cointrax II, also sold as the Kellyco Cobra II. Yeah I'm partial since I own one, but it holds its own quite well against very expensive new machines.

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	Re: NAME SOME OF THE BEST DETECTORS OVER THE YEARS « Reply #12 on: December 24, 2009, 02:54:34 pm »

Hoping this is the right place to post this, I'll proceed....

I've been sidetracked, thanks to the schematic of a Gold Mountain King Cobra coming my way. I have a working GMT 1650 and some years ago, I opened it up, copied out the PCB layout and made another (a clone) to drive a spare 4 inch coil. Much of the PCB was unpopulated and numerous connections were flying, so it was obvious that the PCB was made to serve more than one set of model electronics. Well, reference to the aforementioned King Cobra schematic, reveals that the PCB (which bears the legend GM1 on the component side) was laid for the King Cobra and that the electronics for the GMT 1650 are mounted on a board that probably wasn't designed with dual model usage in mind. I see things like a flying lead off a ground balance preset and passive components soldered directly onto the pins of chips.... half of an LF353 brought into use where the original copper had it idle (as per King Cobra schematic), etc.... Looks like the 1650 may have been an afterthought and was liad on the KC's board to save the not in those days insubstantial expense of designing another PCB. All very interesting stuff and given the apparent interest in the GMT range of detectors, and their scarcity, I'm embarked on a project to construct a King Cobra and in due course, subject to satisfactory completion, to post any and all information that I'm able to glean with regard to the layout of the common PCB and the respective component placements.

Compliments of the season one and all

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GoldDigger1950

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	Re: NAME SOME OF THE BEST DETECTORS OVER THE YEARS « Reply #13 on: December 24, 2009, 04:20:56 pm »

	Quote:	Posted by galileo
Hoping this is the right place to post this, I'll proceed.... I've been sidetracked, thanks to the schematic of a Gold Mountain King Cobra coming my way. I have a working GMT 1650 and some years ago, I opened it up, copied out the PCB layout and made another (a clone) to drive a spare 4 inch coil. Much of the PCB was unpopulated and numerous connections were flying, so it was obvious that the PCB was made to serve more than one set of model electronics. Well, reference to the aforementioned King Cobra schematic, reveals that the PCB (which bears the legend GM1 on the component side) was laid for the King Cobra and that the electronics for the GMT 1650 are mounted on a board that probably wasn't designed with dual model usage in mind. I see things like a flying lead off a ground balance preset and passive components soldered directly onto the pins of chips.... half of an LF353 brought into use where the original copper had it idle (as per King Cobra schematic), etc.... Looks like the 1650 may have been an afterthought and was liad on the KC's board to save the not in those days insubstantial expense of designing another PCB. All very interesting stuff and given the apparent interest in the GMT range of detectors, and their scarcity, I'm embarked on a project to construct a King Cobra and in due course, subject to satisfactory completion, to post any and all information that I'm able to glean with regard to the layout of the common PCB and the respective component placements. Compliments of the season one and all

This topic should be copied and pasted into a new message under the DIY section. Leave it here, though, as the topic is about the best detectors. Clearly you believe it is. Start a new topic in DIY and the discussion will ramble on with a life of its own.

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