[Boatanchors] WTB: B&W Miniductor 3029 coil stock

[Howie WA3MCK]

Typo-
I want extra turns anyway to secure the coil to the insulator.
Waterproofing is not necessary for this design.
9 turns will take me to about 7.2 MHz no it's not exact a typo on my part.
I'm figuring from the center insulator - 32 feet - trap - 21 feet.
Will get me on 80 through 10
De Howie WA3MCK

On Tuesday, October 25, 2016, N2EY at aol.com <N2EY at aol.com> wrote:

> Howie,
>
> What kind of dipole are you building?
>
> The reason I ask is that 9 uH in parallel with 100 pF resonates at about
> 5.3 MHz.
>
> The classic multiband trap dipole, based on the 1955 W3DZZ design, uses
> nine TURNS of the coil stock you mentioned, not 9 uH. The result is about
> 5.2 uH, which results in a resonant frequency of about 7 MHz when used with
> 100 pF.
>
> (coil stock inductance doesn't exactly vary by length; the formula is more
> complicated. "5 uH per inch" isn't accurate)
>
> 73 de Jim, N2EY
>
> In a message dated 10/23/2016 9:39:04 P.M. Eastern Daylight Time,
> wa3mck at gmail.com <javascript:_e(%7B%7D,'cvml','wa3mck at gmail.com');>
> writes:
>
> Good evening RF personnel:
>
> I'm building traps for a multi band dipole.
>
> I need coil stock.
>
> B & W Miniductor #3029 - 2.5 inch diameter, 6 turns per inch, 12 gauge.
>
> I need to make two  9 uH coils  - so, since this stock is rated at 5 uH
> per inch I'll need five inches minimum to allow for cutting and
> trimming, lead length, etc.
>
> I'm also loking for a couple of 100 pF doorknob capacitors rated at 5 KV
> or better.
>
> Whatcha' got?
>
> Tnx es 73 de Howie WA3MCK
>
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