Topband: Probably-dumb question re current mode chokes on RXantennas

[Lee K7TJR]

 Pete, and others.
   There is really no difference with an amplifier or active
 antenna at the antenna end of a line versus passive 
antennas for common mode problems. Mostly the common
 mode currents are a result of a ground on each end of 
these types of systems or another type of severe 
unbalance at the end of the line. 
     Breaking that current flow between the grounds or 
unbalance  with a high impedance is still needed for 
either type of termination.
     Interestingly enough, one of the claims on the 
Rauch/DXEngineering patent on the active antenna 4-square
 receiving system is that resonating the DC carrying chokes
 across the output common mode isolation transformer in an 
active antenna amplifier increases the common mode 
rejection. I would like to see how that works with an amplifier 
that covers many octaves of bandwidth and a resonance being
 usually fairly narrow band. Anybody know how that works at 
more than one narrow band of frequencies?
  The only dumb question is the one that is never asked.
Lee  K7TJR OR