I mean this. A fresh project. 15-m-Antennmast, red=omni-antenna and lightning-protection.
The n1x formula is a more ore less good guess, because in this case the stiffness/mass of the
omni/lightning-protection is unknown.
Moderator: bernd
I mean this. A fresh project. 15-m-Antennmast, red=omni-antenna and lightning-protection.
MANY THANKS!!!
FreeCAD also has a decent module for 2D documentation (TechDraw), did you give it a try ? It could be sufficient in your case.