Topband: DC bias tee question

[Tom W8JI]

> I've been looking at the Shared Apex Loop, and one thing I am puzzled by 
> (among many) is that the bias tee/DC coupler circuit has both sides of 
> the 75-ohm feed coming in from the antenna and the DC supplied to the 
> coupler totally isolated from ground, while the ground side of the coax 
> going to the receiver is connected to ground.  Having recently been 
> totally defeated in building a bias tee of my own for receive antenna 
> switching, I wonder if maybe this is a subtlety of the design that had 
> escaped me.


That makes no difference in function.