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Isn't the definition of a vertical antenna as 'poorly radiating in all directions'? 


Of course, receive/hearing in all directions has its advantages - and disadvantages too.  It can be advantageous to hear in all directions with a omni-directional vertical; and then flip to a  horizontal beam antenna to focus on the station that you want, as well as to reduce receive noise and get some usable gain in RX and TX. 


I know that a 5/8 wl vertical will have a low angle of radiation; but I don't think that applies to a 1/2 wl vertical.


I originally thought this thread was concerned with a "V" quad and its 45 degree radiation phase.  That is why I thought it would have receive and transmission loss due to the 45 degree phasing.  My mistake.


Let the comments fly.


Picture below depicts 1/2 vertical radiator (dotted lines) as opposed to a 5/8 vertical radiator (solid lines):