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Author Topic: Shunt Coil  (Read 17610 times)
NZ4Z
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« on: February 26, 2008, 09:43:42 AM »

I have made my 1st attempt to make a shunt coil for my new HI-Q 5/160. I used 12ga naked solid copper, and 9 or 10 turns about an inch in diameter. Should this be ok? Or what suggestions do you have?

Thanks

73

Steve
NZ4Z
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K0BG
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« Reply #1 on: February 26, 2008, 10:14:54 AM »

If you followed the directions on my web page, and you adjust it correctly, it'll work as I say it will.

Alan, KØBG
www.k0bg.com
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NZ4Z
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« Reply #2 on: February 26, 2008, 01:21:51 PM »

Hey Alan.........yes sir, that was from your page. I just like to throw things out there for feedback. Thanks again for your dedication to the hobby.

73

Steve
NZ4Z
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K0BG
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« Reply #3 on: February 26, 2008, 02:48:33 PM »

Steve, here's something you might want to consider buying.

The ARRL has just published a new booklet by H. Ward Silver, N0AX. It's called 'Hands-on Radio Experiments'. In it are reprints of the series he did on Smith Charts, along with additional material. It is about as simple to follow as anything you'll find from the ARRL.

The treatise should be required reading for every new amateur, as it explains a lot of very complex scenarios in common, easy to understand, terms. It's probably the best $20 buck you'll spend all year.

Alan, KØBG
www.k0bg.com
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KL7AJ
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« Reply #4 on: February 27, 2008, 02:32:45 PM »

that's how I've always done it. If it's mechanically feasible, mount the axis of the shunt coil purpledicular to the loading coil.  This will reduce interaction, and make tuning and loading a bit more independent.  Otherwise your shunt coil inductance will ADD to the overall inductance.  (Well, it will anyway, but you don't want to add MUTUAL inductance)

eric
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