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[TRLog] TRLog and Computer RFI..HELP!

Subject: [TRLog] TRLog and Computer RFI..HELP!
From: (Tree N6TR)
Date: Tue, 2 Dec 1997 15:07:39 -0800 (PST)
> Let me guess that you were using a parallel port to key the rig.
> For stubborn cases of rfi to keying lines, I find the easiest
> solution is to use a serial port instead. You can use one
> serial port for both rig control and keying. For some reason
> the serial ports are more immune to rf.

This is a true statement.  Since the serial port puts a 
negative voltage across the base emitter junction, the noise
immunity is much higher than the parallel port.


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