[RFI] Single-point grounding

Ed K0iL eddieedwards at tconl.com
Sun Jul 1 13:16:44 PDT 2012


Jim Brown wrote:
"IEEE research says that the energy in lightning is very broadly centered
around 1 MHz, with lots of energy at least a decade of frequency above and
below.  At these frequencies, impedance is dominated by inductance, not
resistance. Thus short is better." 

To keep impedance/inductance as low as possible, I've heard that all bonding
connections should not only be short, but also should not have any sharp
bends or turns.  Nothing tighter than an 8"-10" radius bend.  Greater than
10" radius bends if possible.  And no loops.  Keep it as short and straight
as possible.  

73, de ed -K0iL




More information about the RFI mailing list