At 06:30 AM 2007-07-04, donovanf@starpower.net wrote:
>Lets hear some comments about this new MF broadcasting array:
>http://www.broadcast-transradio.com/Horizontal_Task_for_TRANSRADIO.pdf
>
>73!
>Frank
>W3LPL
An interesting NVIS application with circular polarization. It's not
clear why they used such "fat" conductors...it seems like they could
get plenty of bandwidth for MF broadcasting with simple
dipoles. (Profit enhancement?) It's surprising that there was no
mention of a ground screen to minimize losses.
Perhaps a propagation expert could comment on "ordinary and
extraordinary" wave propagation. It sounds like TRANSRADIO claims
that either left- or right-hand circular polarization is preferred by
the ionosphere.
73, Terry N6RY
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