AWG 4: Now that is some serious open wire line!
73,
Gerald K5GW
In a message dated 10/5/2016 3:41:38 P.M. Central Daylight Time,
richard@karlquist.com writes:
On 10/5/2016 12:23 PM, TexasRF--- via TowerTalk wrote:
> Yes, but not much since the dielectric is still mostly air.
>
> Gerald,
> K5GW
>
Although the dielectric is mostly air, the electric
field is not uniform, and is actually much higher
near the wire, right where the dielectric is.
The effect is greater than you might think. My
450 ohm line is made of AWG 4 stranded aluminum
with THHN insulation. I had to increase the spacing by
about 10% to account for the dielectric.
Rick N6RK
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