[Antennaware] Help with Short Dipole

[Gedas]

Thanks Jim.....that's what I decided to do rather then actually measure 
the h-field coupling. Here are the finished inductors ready to be 
hoisted up on the tower.

https://drive.google.com/open?id=1J1W7f9tXWkujJJxgfAW_JrloqMbz6b-0

Gedas, W8BYA

Gallery at http://w8bya.com
Light travels faster than sound....
This is why some people appear bright until you hear them speak.

On 3/9/2019 1:19 PM, James Wolf wrote:
> Gerdas,
>
> I believe that the answer depends on the amount of mutual coupling between
> the two coils.  If there is no coupling, there should be no difference.
> I would wind them in the same direction.
>
> Jim - KR9U
>
>
>
> Message: 1
> Date: Fri, 8 Mar 2019 17:16:57 -0500
> From: Gedas <w8bya at mchsi.com>
> To: Antennaware at contesting.com
> Subject: Re: [Antennaware] Help with Short Dipole
> Message-ID: <db8cef09-ee9a-aaa3-c344-3307b7d15271 at mchsi.com>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> I have a quick question regarding loading inductor winding sense for an
> antenna like a center loaded dipole.
>
> I am about ready to wind my loading coils on the same 26" long, 4.5" dia
> PVC form. I plan on leaving ~2" between the two inductors in the center
> of my form.
>
> I was wondering if the "sense" of the turns of the 2 inductors should
> match those of each other? I think the mutual inductive coupling should
> be minimal but thought I should get a 2nd opinion before I go to a lot
> of trouble. My gut tells me to wind both inductors with the turns all
> going in the "same" direction.
>
> Gedas, W8BYA
>
> Gallery at http://w8bya.com
> Light travels faster than sound....
> This is why some people appear bright until you hear them speak.
>
>
>
>
> ------------------------------
>
> Message: 2
> Date: Fri, 8 Mar 2019 20:50:03 -0600
> From: Mike Waters <mikewate at gmail.com>
> To: Gedas <w8bya at mchsi.com>
> Cc: Antennaware at contesting.com
> Subject: Re: [Antennaware] Help with Short Dipole
> Message-ID:
> 	<CA+FxYXhwoSY4usw=UYL+=orf_ywWLzPUqSLsgp5t8UXv5v4TqA at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> I'm not 100% certain what your inductor looks like. But in this case, you
> should definitely wind them in the same direction. One turn should not look
> like a left-hand thread and the other turn should not look like a
> right-hand thread.
>
> They may couple to each other, being so close.
>
> Now that I think about it, I may be all wrong. :-)
> I suggest that you ask this question on
> https://ham.stackexchange.com. I guarantee you that you will get the
> correct answer there!
>
> 73, Mike
> www.w0btu.com
>
> On Fri, Mar 8, 2019, 4:17 PM Gedas <w8bya at mchsi.com> wrote:
>
>> I have a quick question regarding loading inductor winding sense for an
>> antenna like a center loaded dipole.
>>
>> I am about ready to wind my loading coils on the same 26" long, 4.5" dia
>> PVC form. I plan on leaving ~2" between the two inductors in the center
>> of my form.
>>
>> I was wondering if the "sense" of the turns of the 2 inductors should
>> match those of each other? I think the mutual inductive coupling should
>> be minimal but thought I should get a 2nd opinion before I go to a lot
>> of trouble. My gut tells me to wind both inductors with the turns all
>> going in the "same" direction.
>>
>> Gedas, W8BYA
>>
>> Gallery at http://w8bya.com
>> Light travels faster than sound....
>> This is why some people appear bright until you hear them speak.
>>
>>
>> _______________________________________________
>> Antennaware mailing list
>> Antennaware at contesting.com
>> http://lists.contesting.com/mailman/listinfo/antennaware
>>
>
> ------------------------------
>
> Subject: Digest Footer
>
> _______________________________________________
> Antennaware mailing list
> Antennaware at contesting.com
> http://lists.contesting.com/mailman/listinfo/antennaware
>
>
> ------------------------------
>
> End of Antennaware Digest, Vol 118, Issue 7
> *******************************************
>
> _______________________________________________
> Antennaware mailing list
> Antennaware at contesting.com
> http://lists.contesting.com/mailman/listinfo/antennaware
>