[TowerTalk] Polarization: Quad vs Horizontal at 50 mHz

[W0WOI at aol.com]

If Station A is using a traditional horizontal Yagi in contact with Station 
 B using a horizontal Yagi, via 50 mHz Sporadic Es or some form of F-layer  
propagation, either single or multiple hop, does the signal remain a 
constant  horizontal polarization over the entire path, or is the polarization 
twisted to  be received in various polarizations?
 
And a second question, is there an advantage/disadvantage to using a  
cubical quad at Station A and a horizontal Yagi at Station B?
 
I ask this in view of a debate transpiring elsewhere.
 
Both theorists or first-hand experience acceptable.
 
Thank you.
 
73,  Bill @ W0WOI