[Elecraft] OCF antennas

[Hisashi T Fujinaka]

On Sat, 10 Mar 2012, Jim Brown wrote:

> On 3/10/2012 8:40 PM, Hisashi T Fujinaka wrote:
>> I think you're wrong here.
>
> The math is VERY well known. There's are a couple of excellent technical
> papers about  this in one of the ARRL Antenna Compendiums.  Another
> place to see this is on the Times data sheets for their LMR cables. Look
> below the graph of loss vs frequency, where there is an equation for
> loss as a function of frequency. The first term is resistive loss and
> increases as the square root of frequency, the second is dielectric
> loss, and increases linearly with frequency.  Put the equation in a
> spreadsheet and plot the curve. The square root term is skin effect.

Misapplied math is the worst of all. It's not the frequency you need to
worry about, it's the high voltage breakdown.

-- 
Hisashi T Fujinaka - htodd at twofifty.com
BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte