[Elecraft] Re: I^2*R Losses and Coax Impedance (Was Random Wire)

Mon Jan 13 23:05:01 2003

Stuart,

Tahnks for the info.  Yep, I have a little study to do.

73
Kevin
VK3DAP
----- Original Message -----
From: "Stuart Rohre" <[email protected]>
To: "Kevin Luxford" <[email protected]>; "Peter Halpin"
<[email protected]>; <[email protected]>; "Steve Lawrence"
<[email protected]>
Sent: Tuesday, January 14, 2003 5:21 AM
Subject: Re: [Elecraft] Re: I^2*R Losses and Coax Impedance (Was Random
Wire)

> Kevin,
> The losses may be low, but impedance follows Ohms Law for AC, as does the
DC
> wire losses.  Just do the math.  Impedance is not independent of the wire
> size.  Go to the section in Kraus on parallel transmission lines and
surely
> you will find the equation for impedance which includes not only the
spacing
> of the conductors but the diameter of them as well.
>
> The lower losses of higher impedance lines such as 450 ohm impedance
> parallel line are well documented in the literature; the lower the
impedance
> of any line the more power is dissipated in the line rather than
propagating
> out the antenna.
> 73,
> Stuart K5KVH
> Kraus is a great book, but for practical antenna information you may
benefit
> from books by Carr and W6SAI, among others.
>
>
>