I have a theory question for all you antenna gurus out there... Say I have a 102' doublet fed with 450 ohm ladder line (not a G5RV but just a plain ole doublet)... Probably an average of 25' above ground due to HOA restrictions... (
) Using a tuner in the shack for matching.
I understand that as you move up to the higher bands, you lose much of the broadside radiation and start developing a lot of lobes and nulls and eventually it can become slightly directional off the ends...
Knowing that the antenna is being fed with ladder line, could you add additional legs for the higher bands (aka: a fan dipole) to help maintain the broadside directionality on the high bands? (Doublet is oriented N-S so I'd be trying to maintain E-W directionality...)
Or is 102' short enough so it doesn't get too directional off the ends on 10m?
I haven't yet ventured into modeling with EZNEC yet so educated guesses are welcome!