[TowerTalk] Wire antenna?

[K9MA]

On 7/2/2019 10:49, Richard (Rick) Karlquist wrote:
> Random wires (> 1/2 wave) have random patterns! 

I wouldn't say quite random; they just have lots of lobes. A model will 
give you a pretty good idea of the pattern. The big unknown will always 
be the ground system loss, but that doesn't affect the pattern much, 
just the gain. The high impedance of the end fed half wave multiple 
minimizes that loss.

That said, I've used my 40 m EFHW on 80 with a couple long radials for 
portable operation. It's not great, and there's a bit of RF in the 
shack, but it works. Keep in mind this is the antenna I carry on a 
bicycle, so it has to be very light. Any sort of feedline is out of the 
question. Without the strict weight constraint, there are other 
possibilities.

73,

Scott K9MA

-- 
Scott  K9MA

k9ma at sdellington.us