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Offline Brave
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« Reply #100 on: July 20, 2020, 11:56:05 am »
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Please, I need help
When measuring the frequency at the RX coil, I find it 0 Hz.
Note that I did not put any capacitor with the RX coil.
Please what is the problem?

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Offline Eugene52
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« Reply #101 on: July 26, 2020, 10:34:06 am »
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Quote:Posted by Brave
Please, I need help
When measuring the frequency at the RX coil, I find it 0 Hz.
Note that I did not put any capacitor with the RX coil.
Please what is the problem?


Hello Brave .
What kind of coil you making ? Try 47 nf , if not good try 33 nf.
You should make a DD coil first , much easier than a concentric.
If not a good answer here. Go to Geotech. Is Admiral really that good to spend all your time ??
Please stay safe .

Best Regards................Eugene

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« Reply #102 on: July 29, 2020, 02:53:37 pm »
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Hello all
how to make concentric coils for Admiral metal detector ?

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Offline Eugene52
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« Reply #103 on: July 29, 2020, 03:55:23 pm »
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Quote:Posted by Brave
Hello all
how to make concentric coils for Admiral metal detector ?


I did not build Admiral . The 15 year old file below is harder than the more modern easier methods. I have a great file for you to see but it wont fit here on the thunting forum. only 700 kilobytes LOL !!!!  That's very sad I could not post it here. I can email to you if you want.

All the specifications for the search coil are posted here already !!!  Please Read all the pages of this Admiral Topic.

Also you can make a DD search coil .  We are trying to help you, but you must start by reading and getting the right size wire and the right capacitors.

Best Regards.................Eugene

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coplanar_300.pdf

« Last Edit: July 29, 2020, 04:52:32 pm by Eugene52 » 		Logged
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« Reply #104 on: July 29, 2020, 05:17:23 pm »
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Quote:Posted by Eugene52
I did not build Admiral . The 15 year old file below is harder than the more modern easier methods. I have a great file for you to see but it wont fit here on the thunting forum. only 700 kilobytes LOL !!!!  That's very sad I could not post it here. I can email to you if you want.

All the specifications for the search coil are posted here already !!!  Please Read all the pages of this Admiral Topic.

Also you can make a DD search coil .  We are trying to help you, but you must start by reading and getting the right size wire and the right capacitors.

Best Regards.................Eugene



Many thanks for your response
Actually, I am very interested in reading  all about admiral, and all the electromagnetic devices.
You can send the file via e-mail.

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« Reply #105 on: July 29, 2020, 05:50:01 pm »
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Hello Brave.

I tried to download the 700 kb search coil file to the download area on this forum, no luck . LOL !!!!

I will have to email it. Unless I can break it down to separate pages. so I'm trying that now.

Regards...................Eugene

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« Reply #106 on: July 30, 2020, 05:04:59 am »
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Quote:Posted by Eugene52
Hello Brave.

I tried to download the 700 kb search coil file to the download area on this forum, no luck . LOL !!!!

I will have to email it. Unless I can break it down to separate pages. so I'm trying that now.

Regards...................Eugene


ok sir, thank you

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« Reply #107 on: August 30, 2020, 07:29:01 am »
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Hi all
Please  help me
I make admiral but it not voice

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« Reply #108 on: October 11, 2020, 12:52:28 am »
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Hi all can i use Resistances with accuracy 5% ?

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« Reply #109 on: October 12, 2020, 12:37:33 am »
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Which resistors should be 1% accurate !

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