[Boatanchors] Off Topic: Question about Mosley beams

[D C _Mac_ Macdonald]

I know that Mosley promotes a "direct" feed from split out coax for their direct feed dipole radiator sections.  I presume it is because they actually ground the non-fed side to the tower structure and perhaps consider that makes it an unbalanced feed.  Mosley states that no balun is necessary.  A coil of coax IS recommended as a choke.

Is it possible or even likely that the 2.5 to 3 inch "Y" of the split coax is performing some impedance matching for the antenna?

However, I wonder if using a good quality 1:1 balun while ungrounding the "cold" side of the driven element would be a good thing, bad thing, or not matter.  I suspect weather-proofing would be easier using a sealed balun.

I admit that this is something I have wondered about for well over 50 years and since I have a new Mosley PRO-57-B-40 on order, now is the time to seek some guidance !

73 de Mac, K2GKK/5​
Since 30 Nov 1953​
Oklahoma City, OK​
USAF, Retired ('61-'81)​
FAA, Retired ('94-'10)​