[TowerTalk] Modify Force 12 C-31XR to create mono-band OWA ?

[Grant Saviers]

Why? What is the goal?

If you want an Al pile to make 3 monobanders, there are probably cheaper 
ways to buy the Al.  In any case two more booms are needed.

The "handbook" and other (e.g. G0KSC)  mono-bander "free" designs are 
good to superb.   From my limited experience with interlaced design 
modeling my estimate is 1db or unlikely 2db more gain and somewhat 
cleaner pattern than a tri-band interlaced design if same net boom 
length per band.   I think it unlikely you will have successful 
mono-banders by just de-interlacing the existing C-31XR elements.  Each 
resulting monobander will need to be modeled and optimized.  I would 
suggest investing in an NEC4 package and Dan AC6LA's great AutoEZ optimizer.

What I have learned in my modeling is great respect for successful 
interlaced designs like the C-31XR and the JKantenna designs.  It's hard 
to put everything on one boom and get performance very near to that of 
mono-banders.

Grant KZ1W

On 5/31/2017 4:38 AM, w5wz at w5wz.com wrote:
> Has anyone ever modified a Force 12 C-31XR to create mono-band OWA 
> type antenna for 10, 15, or 20 meters?  Does a successful design for 
> such an endeavor exist?
>
> --Scott, W5WZ
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