northwest QED tips
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australian electronic gold prospecting forum.com  |  QED users  |  QED users (Moderator: bugwhiskers)  |  Topic: QED tips 0 Members and 1 Guest are viewing this topic. « previous next »
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Blip
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« Reply #80 on: Wednesday July 10 2019 22:55:28 AEST PM »

Excellent thankyou.

Al.
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GARY
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« Reply #81 on: Thursday July 11 2019 09:43:04 AEST AM »

  
Thanks Goldman,

Its hard to know that people appreciate your input re tips when there isnt a means to show appreciation but we surely do, so please dont stop.

Cheers mate.

Al.

I could not agree with you more Al.

Goldman's ongoing contribution to the QED both here on this wed site and on the QED Facebook site is amazing to say the least as he continues to share his QED knowledge in words that are very easy for us all to grasp and understand.

Thank you Goldman.

Gary.
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« Reply #82 on: Saturday July 13 2019 17:47:28 AEST PM »

Here is the diagram in the manual that shows the relationship between THS-A and THS-B.

As you can see, the higher you go with THS-A, the smaller is the THS-B band that can be used.

Note that it assumes THS-B NULL is 50.

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GARY
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« Reply #83 on: Saturday July 13 2019 18:28:06 AEST PM »

  

As you can see, the higher you go with THS-A, the smaller is the THS-B band that can be used.


Goldman as I view at your diagram for the THS-A setting then I would think 90 to be at the bottom and 30 at the top.

Gary.
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« Reply #84 on: Saturday July 13 2019 18:46:01 AEST PM »

  
  

As you can see, the higher you go with THS-A, the smaller is the THS-B band that can be used.


Goldman as I view at your diagram for the THS-A setting then I would think 90 to be at the bottom and 30 at the top.

Gary.

If you draw a line down from the 45 and from the 55 THS-B, the range is 10 at THS-A of 30, 5 either side of NULL. So as you go up to 90 THS-A, then the THS-B range is very small at the top.

Cheers Goldman
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GARY
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« Reply #85 on: Saturday July 13 2019 19:11:23 AEST PM »

Have attached below my understanding of the diagram.

Gary.
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Goldman
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« Reply #86 on: Saturday July 13 2019 19:44:03 AEST PM »

  
Have attached below my understanding of the diagram.

Gary.

Hi Gary,
Same interpretation.

Perhaps in the next version of the manual I could use your diagram and/or modify mine to remove the inner triangles as all I was trying to show was the THS-B band narrowing as THS-A increased and a single triangle shows that perfectly.

The next version of the manual is perhaps only a few months away. It will include the tips I have posted to date (if not already included) and more clarifications/descriptions.

Cheers Goldman

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« Reply #87 on: Saturday July 13 2019 21:09:11 AEST PM »

Maybe you could also add in regards to the somewhere on the diagram (smaller nuggets) & (larger nuggets) as in this case above Rising Pitch and Falling Pitch.

Gary.
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« Reply #88 on: Friday August 2 2019 12:39:09 AEST PM »

Further to my previous tip re: Ferrous targets with a long and narrow profile (eg. nails, wire, etc) will give a double tone when detected along their length.

So when you get a signal, always check it at 90 degrees to the original angle and if either one gives a double dip, walk away in confidence. I recommend you try it, dig a few just to gain your confidence in the process and you will find you can save yourself a lot of time in not digging some rubbish targets.

Worth noting that you will get a single tone when the nail is vertical.

The thinking is that when it is lying horizontally it couples one side of the coil to the other distorting the field and causing the wobble.

Cheers Goldman
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« Reply #89 on: Thursday August 8 2019 11:01:01 AEST AM »

QED Fuse
The QED fuse will blow
1. if the input voltage goes over 10 volts, and
2. if the battery polarity is reversed

I strongly advise that the batteries are not removed unless you need to change them. This prevents damaging the battery terminals, and also eliminates the possibility of putting them back in the wrong way around.

Cheers Goldman
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phrunt
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« Reply #90 on: Thursday August 8 2019 19:50:10 AEST PM »

Thanks for all your tips Goldman, I read, re-read and store them in a document for future reference.
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« Reply #91 on: Saturday August 10 2019 21:19:35 AEST PM »

QED and powerlines

One of the QEDs big advantages over other detectors is it’s ability to operate directly under single phase powerlines without interference.

The SMR (Synchronous Mains Rejection) default value of 107 has been designed to eliminate single phase 50 hz main signals. SMR is menu option 9.

If you do get some EMI under single phase power lines, then adjust SMR to null out 50hz mains EMI that is off frequency.

SMR can also be used to null out other sources of rhythmic EMI (e.g. microwave towers, 2 way radio transmissions, etc). So if you know you are in an area where these are a problem, then try adjusting SMR to see whether you can null the resulting EMI.

I have tested this myself (powerlines) on numerous occasions and I can tell you that this feature really works.

This feature is unique to the QED and is a feature that Howard designed into the QED from the very start of the design.

If you do adjust SMR, then don’t forget to reset it to the factory default setting (107) after you have finished detecting under/near the powerlines, otherwise you will find that your QED is noisy when next you are out detecting.

Cheers Goldman
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« Reply #92 on: Saturday August 10 2019 21:20:56 AEST PM »

QED factory Default Setting.
The factory default settings have been designed to put you in a ‘safe’ position if you get into difficulty (e.g. either messed the settings up or it’s very noisy for no reason), or
If you have on purpose set the QED up ‘on the edge’ using most of the settings available to push the limits and you want to quickly get back to some sort of standard for all settings.

The manual has a quick start guide (for beginners) that starts from the factory default position and suggests adjustment of only two settings:
1) THS-A up from default (30) until a threshold is heard, and
2) adjusting gain up from default (1) as high as is possible given the prevailing ground conditions and EMI.

You can successfully detect using factory presets, but I would at least do as the quick start guide suggests, with the addition of setting Mode appropriately and setting THS-B appropriately. Not forgetting the all important GB.

Cheers Goldman
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bugwhiskers
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« Reply #93 on: Sunday August 11 2019 13:39:54 AEST PM »

Interfacion Pty Ltd is pleased to announce that the QED has been modified to allow the use of DD (double D) and CC (Concentric Coplanar) coils. This change involves a simple change to the electronics within the control box.

The firmware has also been upgraded to include a further improved Ground Balance.

All detectors being delivered to new customers from Monday 5th August 2019 will already have the above upgrades included.

As a show of commitment to all QED owners, the hardware modification to allow use of the DD and CC coils will be provided at no cost.

Of course and as per the QED warranty, the firmware update is provided free of charge, except for P&H.

Any QED owner who plans to attend the Laanecoorie Bash is encouraged to bring their detector along and have it upgraded at no cost.

Standard postage and handling arrangements apply to other owners. Send via Australia Post the box (minus batteries) along with a pre-paid, pre-addressed bag/box to:

Interfacion Pty Ltd

PO Box 106R

Redan VIC 3350
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« Reply #94 on: Sunday August 11 2019 14:55:16 AEST PM »

  
Interfacion Pty Ltd is pleased to announce that the QED has been modified to allow the use of DD (double D) and CC (Concentric Coplanar) coils. This change involves a simple change to the electronics within the control box.

The firmware has also been upgraded to include a further improved Ground Balance.

All detectors being delivered to new customers from Monday 5th August 2019 will already have the above upgrades included.

As a show of commitment to all QED owners, the hardware modification to allow use of the DD and CC coils will be provided at no cost.

Of course and as per the QED warranty, the firmware update is provided free of charge, except for P&H.

Any QED owner who plans to attend the Laanecoorie Bash is encouraged to bring their detector along and have it upgraded at no cost.

Standard postage and handling arrangements apply to other owners. Send via Australia Post the box (minus batteries) along with a pre-paid, pre-addressed bag/box to:

Interfacion Pty Ltd

PO Box 106R

Redan VIC 3350


Good on you Howard.

This will finally make a lot of people look more closely at the QED'S capabilities.
 
A lot cheaper than a Minelab PI detector.

The QED will only go from strength to strength.
Well done.

Cheers.

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phrunt
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« Reply #95 on: Sunday August 11 2019 14:58:24 AEST PM »

  
Interfacion Pty Ltd is pleased to announce that the QED has been modified to allow the use of DD (double D) and CC (Concentric Coplanar) coils. This change involves a simple change to the electronics within the control box.

Standard postage and handling arrangements apply to other owners. Send via Australia Post the box (minus batteries) along with a pre-paid, pre-addressed bag/box to:

Interfacion Pty Ltd

PO Box 106R

Redan VIC 3350


This is absolutely awesome, thank you.

As I'm sending mine from NZ what parts do you need? just the box where the batteries go? Or the actual control box as well?  I'd rather send as little as possible  smile

Also I'll be unable to do the prepaid bag as requested, I'll have to deposit the money to your account for return postage, can this be arranged?

Thank you.
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bugwhiskers
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« Reply #96 on: Sunday August 11 2019 17:21:09 AEST PM »

  
  
Interfacion Pty Ltd is pleased to announce that the QED has been modified to allow the use of DD (double D) and CC (Concentric Coplanar) coils. This change involves a simple change to the electronics within the control box.

The firmware has also been upgraded to include a further improved Ground Balance.

All detectors being delivered to new customers from Monday 5th August 2019 will already have the above upgrades included.

As a show of commitment to all QED owners, the hardware modification to allow use of the DD and CC coils will be provided at no cost.

Of course and as per the QED warranty, the firmware update is provided free of charge, except for P&H.

Any QED owner who plans to attend the Laanecoorie Bash is encouraged to bring their detector along and have it upgraded at no cost.

Standard postage and handling arrangements apply to other owners. Send via Australia Post the box (minus batteries) along with a pre-paid, pre-addressed bag/box to:

Interfacion Pty Ltd

PO Box 106R

Redan VIC 3350


Good on you Howard.

This will finally make a lot of people look more closely at the QED'S capabilities.
 
A lot cheaper than a Minelab PI detector.

The QED will only go from strength to strength.
Well done.

Cheers.


  
  
Interfacion Pty Ltd is pleased to announce that the QED has been modified to allow the use of DD (double D) and CC (Concentric Coplanar) coils. This change involves a simple change to the electronics within the control box.

Standard postage and handling arrangements apply to other owners. Send via Australia Post the box (minus batteries) along with a pre-paid, pre-addressed bag/box to:

Interfacion Pty Ltd

PO Box 106R

Redan VIC 3350


This is absolutely awesome, thank you.

As I'm sending mine from NZ what parts do you need? just the box where the batteries go? Or the actual control box as well?  I'd rather send as little as possible  smile

Also I'll be unable to do the prepaid bag as requested, I'll have to deposit the money to your account for return postage, can this be arranged?

Thank you.

Just the rear mounted box minus the batteries.
Slip a cheque in the package to cover the return trip.
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« Reply #97 on: Sunday August 11 2019 18:16:46 AEST PM »

Well done howard  The QED keeps getting better, excited see you at the Laanecoorie Bash
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bugwhiskers
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« Reply #98 on: Monday August 12 2019 09:06:45 AEST AM »

The improved GB method is called "DSM" Dynamic Spectrum Modulation.
A copyright notification was placed in this forum about a month ago.
Within each group of 2 * Short TX and 1 * Long TX the Short TX are increased in width and the Long TX is decreased in width. The samples after each TX are arranged to simultaneously cancel single cycle Mains EMI and Earth Field.
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« Reply #99 on: Monday August 12 2019 09:38:01 AEST AM »

  
The improved GB method is called "DSM" Dynamic Spectrum Modulation.
A copyright notification was placed in this forum about a month ago.

Within each group of 2 * Short TX and 1 * Long TX the Short TX are increased in width and the Long TX is decreased in width. The samples after each TX are arranged to simultaneously cancel single cycle Mains EMI and Earth Field.

Sounds good Bugs.  happy face

Love the way samples in DSM have been 'adapted & arranged' (a borrowed phrase) the make the QED GB better.

How is improved GB (ground noise) linked to EMI & Earth Field rejection?
Will you advertise "Improved, now with DSM"!  Cant see that but some makers would

You are making great progress with incremental improvements / upgrades and service to QED owners.
We are proud of your achievements.  Clap Hands

 good luck

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