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Offline DavepTopic starter
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White's Silver Eagle
« on: July 12, 2016, 01:10:35 pm »
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Hi all, I have a very basic understanding of electronics, but capable soldering and following directions haha. 

I was wondering about coils.  The information I see on the forum leaves me confused, there are references to different coil requirements for different machines? Am I missing a sticky, or a post somewhere that breaks down the requirements?  Anyone feel like educating a noob?

I want to build a couple additional coils for an old White's Silver Eagle.  I got it with an 8", but would like a 10 or 11 as well.  Is it possible to DIY a coil of comparable quality as the $100.00 used units, for less than that cost? If not, are there coil builds that while being expensive, are worth the cost and effort?   

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« Reply #1 on: July 12, 2016, 01:29:57 pm »
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    Here is a bit of info your dealing with. 

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www.deeptech-bg.com/search_coils.pdf




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White's Silver Eagle
« Reply #2 on: July 12, 2016, 02:27:04 pm »
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Thanks, the more I can digest, the faster I'll get it.

I am starting to get the principal, two oscillating coils one as a reference plus the search coil.

Appreciate the info!

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« Reply #3 on: July 12, 2016, 02:36:34 pm »
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  In your case it's a TX coil and a RX coil.  Need to find what Impedance , Resistance and if there is a Cap in the coil.   I looked around and not found any info at this time.

Posted on: July 12, 2016, 02:32:30 pm
May be the same as the Spectrum ?

White's
Name    TX-L    TX-R (ohms)    TX-fo    TX wire    RX-L    RX-R (ohms)    RX-fo    RX wire
6B 4"    1.74mH    7.71    ---    ---    19.7mH    35.1    ---    ---
6B 8"    1.72mH    6.47    ---    ---    12.92mH    32.2    ---    ---
6B 10"    1.69mH    6.68    ---    ---    16.2mH    39.1    ---    ---
6B 15"    1.59mH    6.36    ---    ---    21.0mH    51.5    ---    ---
Spectrum 9.5"    540uH    1.40    ---    ---    36mH    122.8    ---    ---

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