[TowerTalk] Mosley Antenna Question

[Jim Brown]

On Tue,2/17/2015 7:16 PM, TexasRF--- via TowerTalk wrote:
> the dielectric constant dictates the center conductor size.
>   
> The low density foam dielectrics require a much larger center conductor to maintain a 50 ohm impedance and the lower losses are a result.

Right -- except that I'd rewrite slightly by saying that  "a low density 
foam dielectric ALLOWS a much larger center conductor for the same 
diameter cable. "

> So, indirectly the dielectric does contribute to the loss in a given size cable.

Yes.  But that's its ONLY contribution to lower loss.

73, Jim K9YC