[RFI] Computer RFI problem

[ka5s@earthlink.net (Cortland Richmond)]

We can account for common-mode current here without recourse to induced 
fields.  We must provide a relatively low impedance for the matching
circuit 
return. There could be perhaps 20 volts on this return point, be it
capacitive 
hat or accidental impedance, for each 1 amp into the 50 ohm side. 

This quite explains the need for a choke even with an antenna that is 
"ground independent."  


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