Scott,
The only dumb question is a question not asked.
free space wavelength is the correct description of the dimension you are
looking for, use the speed of light to calculate it. There are lots of
formulas you could use,
such as 984/f for a wavelength in feet, or 300/f for a wavelength in meters.
I prefer 11803/f for a wavelength in inches.
All of the above will tell you that 1/8 wavelength at 3.8 MHz is 32 feet 4
inches.
Good luck with your antenna project!
73
Frank
W3LPL
---- Original message ----
>Date: Mon, 20 Nov 2006 23:22:06 -0500
>From: "D. Scott MacKenzie" <kb0fhp@comcast.net>
>Subject: [TowerTalk] Dumb Question
>To: <TowerTalk@contesting.com>
>
>I am trying to set up a set of 2 phased verticals in a similar fashion to
>this:
>
>http://home.comcast.net/~kb0fhp/80M_Vertical/80M_Vertical.htm
>
>With the limited space I have available, I have decided to use 1/8 wave
>spacing, with 135 degree phasing - it should give me about 3-4 db gain over
>my existing set up. The question I have, is what is the free space length
>of 1/8 wave at 3.8 Mhz? Can I use 125.625/f (from the loop equation l =
>1005/f)? Or is there something else I should use?
>
>Sorry for the dumb question....I appreciate your help in advance.
>
>Scott
>
>
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