For ground-laid radials, didn't Jim make the point that they serve primarily to
shield the Earth from the antenna's RF?
73, kelly, ve4xt
Sent from my iPhone
> On Feb 27, 2016, at 5:46 PM, Drax Felton <draxfelton@gmail.com> wrote:
>
> I always liked this article where they optimize the length of wire you have
> vs. radial count vs. radial length.
> http://ncjweb.com/bonus-content/k3lcmaxgainradials.pdf
>
> The radials on my 160 meter vertical are all different lengths to fit the
> available space. I've made 1000's of contacts on it. I keep adding new
> radials over time and some have gotten broken off. Despite it all it
> doesn't really seem to make any difference and becomes a diminishing return.
>
> I see no reason to make yourself crazy trying to do quarter wave plus 5%.
> It's going to vary based on soil conditions plus what exactly is a quarter
> wave radial? You'd have to measure the velocity factor radial wire. Just
> lay down as many as your back, wallet, and space allows.
>
> KB3X
>
>
>> On 2/27/2016 3:27 PM, Grant Saviers wrote:
>> installing a 40/80 meter vertical (DX Engineering 8040VA-1) which calls
>> for 65 foot radials. However, I recently saw a video of an antenna
>> presentation by W3LPL in which Frank suggests 70 foot radials for an 80
>> meter antenna. I'll be burying the radials about an inch in the ground.
>> Will it really make a dime's worth of difference whether I cut the radials
>> at 65 ft or 70 ft? My understanding of radials has always been that
>> elevated radials should be cut at a quarter wave plus 5%, but ground radial
>> length isn't critical. I just wanted to get a consensus before I start
>> chopping up thousands of feet of wire.
>
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