[TowerTalk] Fw: [SteppIR] 3El height

Jim Lux jimlux at earthlink.net
Sat Jul 29 19:12:04 EDT 2006

At 02:23 PM 7/29/2006, Red wrote:
>In addition to stacking, feed one through an adjustable phasing network
>to steer the pattern to the desired vertical angle.
>73 de WOØW

In some cases, one might not even need the phasing network.  You could set 
one antenna to present a inductive feedpoint impedance and the other to 
have a capacitive reactance, and get your "phase shifter" for free.

Truly, adjustable element lengths in a 2D array (i.e. a stack) gives you a 
whole raft of interesting possibilities that are alien to traditional 
antenna schemes.

The challenge will be in getting practical experience.  Modeling it is 
simple enough, but with those "extra knobs to twist" it's not clear yet 
what will prove to be the most useful types of pattern.

Jim, W6RMK 

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