Post by Jim GM4DHJ ... Post by brian Post by jim.gm4dhj Post by Jim GM4DHJ ...
The video is running like an arthritic snail on a zimmer. Is that
big wheel antenna he's testing ? What are his conclusions ?
ask me not him he has is mounted verical what a diddy
It will work vertically and will still be omnidirectional . In terms
of performance however they only have a fraction of a dB over a
smaller and cheaper halo.
how can it ... you are firing from three separate elements.so one will
be firing up one sideways and one down....
I think you're right. There's a bit of cancellation between the 3 bits
A horizontal big wheel has a deep null up and down in free space . A
halo has a much less deep null. So if you turn both through 90 degrees,
the null is horizontal - not so bad with the halo, so both are not
omnidirectional,with the halo winning . A further complication is the
height above ground . If you are unlucky most of the radiation goes
I don't think big wheels are meant to be used vertically.
What was he trying to do ? . I'll need to try the videos on another
browser. I'll mess around with the big wheel model,