[Elecraft] Big antenna - Collins 13 ele Log?

[Fred Jensen]

Ken Kaplan wrote:
> Dave (et al):
> I pass that large array (at the FAA, LI MacArthur Airport)
> every day on the way to work. I have been wondering for years how to get 
> my K2 hooked up to it. I have friends who work there, but alas, they 
> have no good connections..hi.
> 73
> Ken WB2ART

Those things have been around for decades.  There was one on top of the 
WW2 wooden hangar at Galena AFS AK [KL7FBK] when I first arrived in 
early 1963.  They are impressive to see, extremely wide bandwidth [most 
of the HF spectrum] but not much gain.  Huge rotator, and somewhat hard 
to aim because of the large moment of inertia.  However, F/B ratio was 
also low so precise aiming wasn't needed.  The basic idea behind a 
log-periodic is that only a couple of elements are active on any given 
frequency, so electrically, they're not nearly a big as they look.  You 
could hook it to your K2, but you'd be disappointed.

The military ran engineered circuits, and the flat response was the 
reason the L-P's were so ubiquitous on military posts.  From Galena, we 
generally checked into an early morning weather net [on 20 I think], and 
the 3 el tribander was much better than the L-P.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2007 CQP Oct 6-7
- www.cqp.org