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Balancing to ignore the ground?

April 20, 2019 09:22AM avatar
Quote
glabelle
George Payne, the inventor of ground balancing detectors.
Kind of.

George had the patent for a Very Low Frequency, Induction/Balance circuitry design to cancel the ground mineral effects.

What was the benefit? To cancel or ignore the effects on the Transmit/Receive (Induction/Balance) detector's behavior when a search coil is lowered toward the ground mineral, which causes the audio to null out, if the coil is raised away from the ground causing a loudness increase from a Threshold audio. I believe George's patent is was from about 1974.

However, I used to have an old military mine detector. It worked on the Transmit/Receive principle and was a very big outfit, heavy, with a large battery that was in a bag and carried on your back. I got that back in the '70s and used it in some of my club or group presentations and had on display when I was a dealer to show how those earlier detectors compared with our hobby-based equipment.

I later used it in my seminars, too, at least until'84 when I sold it. In a club meeting to demonstrate things I would have a friend get all mounted up in it and walk in and around the room so people got a kick out of the big contraption compared to what we had then that was more compact. I had the big case the landmine detector came it, and better still I had the Operator's Manual. I didn't see George Payne's name written anywhere on it, and I pointed that out to people back then as I read the manual's tuning procedure for the device.

It was very clear on how to tune and adjust the unit for best performance and to deal with the ground falsing. It had controls you would adjust to establish a Threshold audio sound when held it away from the ground. Then another knob you would adjust when the device was lowered close to the ground. The operator would continue to adjust the initial Tuner control for the threshold and the other control when the unit was lowered until the adjustments resulted in a consistent Threshold audio hum as the device's coil was moved over varying ground, raised or lowered from the ground, or swept over a void.

Sure sounded like ground cancellation to me, and I don't think they used control names like White's did on George's first VLF All Metal production model the Coin V Supreme. Those two controls were the Tuner (to adjust or 'tune' a Threshold hum) and the other was called a Terrainian Attenuator to adjust the unit to balance out or cancel the terrain/ground signal effects.

George's model design was for a VLF device, and I would guess dealt with other things necessary for a patent, but we could adjust the ground effect before that.

Monte

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Subject Author Views Posted

Important Topic by George: Deep coin shooting with a concentric coil???

glabelle 161 April 16, 2019 06:50AM

Related Reference if you're interested -

Rich (Utah) 65 April 22, 2019 11:47PM

Related Reference of interest? Well, I'm not, and I don't mind commenting on it, either.

Monte 67 April 23, 2019 07:55PM

Coils and Coins -

Rich (Utah) 46 April 23, 2019 08:46PM

Re: Related Reference if you're interested -

glabelle 52 April 23, 2019 07:11AM

Coil Sizes and Depth on Coins -

Rich (Utah) 42 April 23, 2019 08:40PM

Re: Coil Sizes and Depth on Coins -

glabelle 35 April 23, 2019 09:37PM

Coil Sizes and Depth on Coins -

Rich (Utah) 36 April 23, 2019 09:44PM

Re: Related Reference if you're interested -

OregonGregg 52 April 23, 2019 05:45AM

Re: Related Reference if you're interested -

Rich (Utah) 35 April 23, 2019 08:54PM

Pardon me George and others, but this is a great topic.

Monte 99 April 19, 2019 10:35AM

George, this is a great topic. Question for Harold,ILL

Rich (Utah) 65 April 19, 2019 05:45PM

Comments for Rich (Utah) from Monte.

Monte 68 April 20, 2019 08:40AM

What is DEEP ? - Some Detecting Options

Rich (Utah) 62 April 20, 2019 07:43PM

Re: What is DEEP ? - Some Detecting Options reply Rich Attachments

Kickindirt 51 April 20, 2019 09:12PM

Re: What is DEEP ? - Some Detecting Options

OregonGregg 51 April 20, 2019 08:06PM

Re: What is DEEP ? - Some Detecting Options

Rich (Utah) 44 April 20, 2019 09:22PM

Re: What is DEEP ? - Some Detecting Options Attachments

OregonGregg 44 April 20, 2019 09:35PM

Re: Pardon me George and others, but this is a great topic.

glabelle 53 April 19, 2019 04:43PM

George, I'll respond to your 5-points.

Monte 57 April 20, 2019 05:42AM

In a nutshell . . . . .

Rich (Utah) 44 April 19, 2019 07:48PM

Re: In a nutshell . . . . .

glabelle 55 April 19, 2019 08:42PM

Preferences -

Rich (Utah) 41 April 19, 2019 11:48PM

A few last comments on coils and absolute depth Attachments

glabelle 51 April 20, 2019 09:24AM

George, a simple reason I described the 'cone.'

Monte 56 April 20, 2019 03:59PM

Adjacency - And why is that still there thinking

Rich (Utah) 47 April 20, 2019 06:13PM

Re: Adjacency - And why is that still there thinking Great Post Richthumbs up

Druid 32 April 21, 2019 09:49AM

Re: A few last comments on coils and absolute depth

jmaryt 35 April 20, 2019 10:28AM

Re: Deep coin shooting with a concentric coil???

Kickindirt 73 April 16, 2019 06:46PM

Re: Deep coin shooting with a concentric coil???

glabelle 69 April 16, 2019 09:57PM

Balancing to ignore the ground?

Monte 56 April 20, 2019 09:22AM

Re: Balancing to ignore the ground?

glabelle 42 April 20, 2019 09:34AM

Re: Deep coin shooting with a concentric coil???

Kickindirt 58 April 17, 2019 11:05AM

Just a thought or two regarding coil size selection.

Monte 44 April 20, 2019 09:59AM

Re: Deep coin shooting with a concentric coil???

glabelle 60 April 17, 2019 04:13PM

What should I use to look for deep silver dimes?

Rich (Utah) 80 April 16, 2019 10:20PM

Re: What should I use to look for deep silver dimes?

glabelle 63 April 17, 2019 09:21AM

Re: What should I use to look for deep silver dimes?

Harold,ILL. 62 April 17, 2019 08:06AM

Re: What should I use to look for deep silver dimes?

jmaryt 55 April 17, 2019 10:44AM

Re: What should I use to look for deep silver dimes?

Rich (Utah) 65 April 17, 2019 04:12PM



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