[Elecraft] Fwd: RE: K3S proper grounding?

[Jim Brown]

-----Original Message----- From: elecraft-bounces at mailman.qth.net 
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Jim Brown Sent: 
Sunday, September 27, 2015 3:49 PM To: elecraft at mailman.qth.net Subject: 
Re: [Elecraft] K3S proper grounding?

 > Often the requirements of one system will be at odds with other > 
grounding requirements. For instance you generally want a high > 
impedance for RFI issues and a very low impedance for lightning > 
grounds. One system defeats the other so they really need to be separate 
systems. NO, NO, NO, NO!

  [Fred Townsend] Well yes maybe. How do you bond a ferrite
choke? Are not all chokes high impedance at their intended
useful frequency? I said 'system' not 'ground'.

[K9YC]

Huh? Chokes are used on SIGNAL lines, NOT on bonding conductors. A 
fundamental requirement of bonding is that it be LOW IMPEDANCE, so, in 
general, bonding conductors should not be choked. Further, lightning is 
NOT a DC event, it is an RF event. It's an impulse, with broad energy 
peak around 1 MHz.

73, Jim K9YC