Bill,
I have used this type antenna for several years. It is a very common VHF/UHF
antenna because of its simplicity. It makes a great 17 meter antenna and is
easy to construct without a lot of real estate.
I offer further comment embedded below:
>-----Original Message-----
>From: towertalk-bounces@contesting.com
>[mailto:towertalk-bounces@contesting.com]On Behalf Of Bill Aycock
>Sent: Monday, April 06, 2009 13:37
>To: Michael Tope; N7mal
>Cc: towertalk@contesting.com; John Geiger; Robert Redmon
>Subject: Re: [TowerTalk] Vertical vs Beam
>
>
>As far as the subject of 1/2 wave verticals goes, the WWV site
>leaves out a
>LOT!
>1. Where is the feed point?
Feed point is at the top of the skirt and the base of the 1/4 wave vertical
on top.
Coax shield to skirt and center to top vertical.
>2. what is the feed point impedance?
Nominal 50 ohm. This is accomplished by the angle of the skirt to the driven
element.
>3. Are the lower ends of the "guys" grounded?
Nope. They should have insulators at the 1/4 wave point. The more skirt
wires you install the more uniform the radiation pattern.
>4. Why is it important that the Coax feeds do not cross?
Good question. That one is above my pay grade.
* 73's Jim W5IFP *
>Does anyone know?
>Are the arrangements of the TTers with 1/2 wave verticals like
>WWV, and if
>not, why reference it?
>Bill--W4BSG
>
>
> ----- Original Message -----
>From: "Michael Tope" <W4EF@dellroy.com>
>To: "N7mal" <n7mal@citlink.net>
>>
>>>----- Original Message -----
>>>From: N7mal
>>>To: John Geiger ; towertalk@contesting.com
>>>>>
>> WWV uses 1/2 wave verticals:
>>
>> http://tf.nist.gov/timefreq/stations/wwv.html
>>
>>
>
>
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