[TowerTalk] Fractal Antennas, Chip Cohen (N1IR) on Nova Last Night

[Rik van Riel]

On 12/15/2010 09:41 PM, Joe Subich, W4TV wrote:

> My BS detector went off when Chip claimed that standard modeling tools
> NEC-2/NEC-4 were inaccurate when it cable to *his* fractal antennas.
> If they're suitable for a log-periodic dipole array (which is by
> definition a fractal antenna), why don't they work with Chip's antennas?

I've gotten NEC to blow up in so many ways using perfectly
reasonable wire antenna designs, it's hard to even begin
guessing which of the many ways NEC can blow up Chip ran
into...

Even a simple double L / lazy U antenna, fed in the middle,
with no radials under it, can get NEC to come up with negative
real impedances (and SWR values "up to" -1000) on some
frequencies :(

-- 
All rights reversed.