northwest VLF detector tip !
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australian electronic gold prospecting forum.com  |  Common interest forum.  |  General chat and discussion forum  |  Prospecting tips and detector techniques  |  Topic: VLF detector tip ! 0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: VLF detector tip !  (Read 581 times)
Bobby
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« on: Monday December 13 2010 11:38:52 AEDT AM »

After reading the following article on a UK forum I think I better buy the best batteries from now on   ::55::

Several months ago I made the decision to trade my Goldmax for a Tesoro Tejon pro, with a 12x10 web coil I purchased a detector from crawfords which is where I met Craig, he very kindly bolted the machine together in doing so fitted some batteries in called panasonic industrials these are freebie batteries that come with the machine, I left the shop and within a few days I was in the fields with my new Tejon Ultimate, at the time I thought the overall performance of the Tejon was adequate, I tried various set ups but I was a little disappointed with sensitivity towards small objects, your advice was very helpful, but for a high frequency machine I was not over impressed, although the depth was good I felt it could have been better, after a few more outings I decided to change the batteries, again acting under your instructions I decided to go with Energizers.

From the moment I switched the machine on I was in awe of the true potential of the machine, replacing the batteries with energizers totally transformed the Tejon, it now had the ability to detect tiny objects at great depths even as small as my little finger nail at 8-10 inches down with a crystal clear signal, the detecting was performed on ploughed land, this has been a great learning curve for me (I kinda thought that all  batteries where the same, some just lasting longer than others, I now realise that this is far from the truth) all the functions of the Tejon were greatly improved from the ground balancing to the discrimination and sensitivity etc.

 If it was a car I was talking about you would think I had just put nitro's in it. If anyone buys one of these machines make sure that you use quality batteries i.e. energizers and not freebies or budget ones, our further discussions were very interesting I think you should make more people aware of your battery tests, I cant believe a high performance 9volt battery pumps out 5.5amps where as a ordinary 9volt only pumps out 0.5/1amps. It is the amps that makes the difference.



Bobby.
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sawmill
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« Reply #1 on: Monday December 13 2010 16:43:18 AEDT PM »


 Bobby
  I have noticed the same with my VLF
detectors. The cheap batteries drop off
from their peak real fast. The detector will
still run and seem OK,but it doesn't hold
ground balance well and loses depth.
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Bobby
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« Reply #2 on: Monday December 13 2010 21:23:50 AEDT PM »

  

 Bobby
  I have noticed the same with my VLF
detectors. The cheap batteries drop off
from their peak real fast. The detector will
still run and seem OK,but it doesn't hold
ground balance well and loses depth.

Whats most critical seems to be the amp output of the inferior batteries , I never knew this    ::54:: most VLFs have a battery check  , seems all it does is show the volts but cant check amps !

Like you said~ all seems OK until you can work out your detectors performance is poor , I,d be still fooling myself looking at the battery OK signal  confused until now
Just wonder if this affects PI units also ?

Cheers Bobby
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Huego
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« Reply #3 on: Monday December 13 2010 21:29:24 AEDT PM »

Woody would know. I hope he can make a comment on battery type and quality......  V, I and staying power. .

Recall the bloke in Illawarra recently talking about his poor 3500 making strange noises and under-performing.
It was the battery he found.
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Bobby
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« Reply #4 on: Monday December 13 2010 21:44:28 AEDT PM »

Yes he would know , cant wait for the answer now  ::38:: don't remember  seeing a ML comment about amp output-  only Volts  ?

Bobby .
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WM6
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« Reply #5 on: Monday December 13 2010 22:14:31 AEDT PM »

  

Just wonder if this affects PI units also ?


What do you mean, why all this after-sales battery offer for say ML GP(x) detectors?
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Bobby
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« Reply #6 on: Monday December 13 2010 22:23:31 AEDT PM »

  
  

Just wonder if this affects PI units also ?


What do you mean, why all this after-sales offer for say ML GP(x) detectors?

 Do I need a translator ???  Cant understand  what you mean  .

Cheers Bobby  happy face
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« Reply #7 on: Monday December 13 2010 22:36:05 AEDT PM »

  
  
  

Just wonder if this affects PI units also ?


What do you mean, why all this after-sales offer for say ML GP(x) detectors?

 Do I need a translator ???  Cant understand  what you mean  .

Cheers Bobby  happy face

Only rhetorical question Bobby, no translator needed.
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Bobby
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« Reply #8 on: Monday December 13 2010 23:00:14 AEDT PM »


 

 So its a question asked solely to produce an effect or to make an assertion and not to elist a reply .

To infer what ?
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« Reply #9 on: Monday December 13 2010 23:07:46 AEDT PM »

  

 

 So its a question asked solely to produce an effect or to make an assertion and not to elist a reply .

To infer what ?


Sorry Bobby, but my English are so limited, that I am not able to explain my rhetorical question better that I am asking originally.
I apologize myself for possible disorder here.
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Bobby
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« Reply #10 on: Monday December 13 2010 23:17:52 AEDT PM »

  
  

 

 So its a question asked solely to produce an effect or to make an assertion and not to elist a reply .

To infer what ?


Sorry Bobby, but my English are so limited, that I am not able to explain my rhetorical question better that I am asking originally.
I apologize myself for possible disorder here.

No need to apologize , the English language is even difficult for those who know non outher . 

Regards Bobby.
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« Reply #11 on: Monday December 13 2010 23:30:10 AEDT PM »

Hmmm, well this is my take....

Bobby, you said,"Just wonder if this effects pi units also?"

Wm6 replied saying "why do you think there are so many after market battery units?" Or in other words it is possible. Speak up if I have misinterpreted what you said!

Now I am going to reply and say "It is important to have good batterys so peak coil currents can be reached however the tank capacitors in the pi transmit cct are also responsible for delivering the peak coil current and the battery just recharges the tank cap between each tx. "

 

Cheers Mick

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Bobby
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« Reply #12 on: Tuesday December 14 2010 00:01:16 AEDT AM »

Yep I get what your saying Mick , I'm an Aussie in Australia and this is an Australian forum , hope you see where I'm coming from mate   happy face

Cheers Bobby.
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« Reply #13 on: Tuesday December 14 2010 01:08:04 AEDT AM »

  
Hmmm, well this is my take....

Bobby, you said,"Just wonder if this effects pi units also?"

Wm6 replied saying "why do you think there are so many after market battery units?" Or in other words it is possible. Speak up if I have misinterpreted what you said!


Thanks Mick. Correct! Now I understand what I said.
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« Reply #14 on: Tuesday December 14 2010 01:12:38 AEDT AM »

  
Yep I get what your saying Mick , I'm an Aussie in Australia and this is an Australian forum , hope you see where I'm coming from mate   happy face

Cheers Bobby.

Hi Bobby,

probably we all are in need of better battery pack (lower tension/voltage and more current).

PS: Despite my poor English, no one can sell me an ML artwork for $ 6,000.
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Bobby
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« Reply #15 on: Tuesday December 14 2010 01:47:08 AEDT AM »

  
  
Yep I get what your saying Mick , I'm an Aussie in Australia and this is an Australian forum , hope you see where I'm coming from mate   happy face

Cheers Bobby.

Hi Bobby,

probably we all are in need of better battery pack (lower tension/voltage and more current).

PS: Despite my poor English, no one can sell me an ML artwork for $ 6,000.

Your English is fine , agree with the over $6000 cost for a detector that's a ?????

Best Wishes Bobby
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« Reply #16 on: Tuesday December 14 2010 02:39:43 AEDT AM »

    Back to the subject.
If sufficient for someone detector, here can you find a powerfull Li-ion 9 cells battery, Voltage: 11.1V and Capacity: 7200mAh (mean full day of PI search):

  

for less than $50, shipping inclusive.

And here adequate charger:

  

you can easily charge it over car 12V connector (by use simple current limiter) or over an 12V car battery Solar Power Charger too.
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