There are two RFI problem at my house ... a set of computer speakers my
wife uses on a TV upstairs likes a couple of 20 meter frequencies. And
a couple of frequencies on 40 meters turns on just one sector of my
underground sprinkling system. Out by the mail box. Only runs when I
transmit...
Coiling the speaker cables seems to have changed them from being
antennas, but the sprinkler system is still an enigma. I am still
working that.
===================== K8JHR ================================
On 8/11/2010 9:47 PM, Jim Brown K9YC wrote:
> THAT'S why ferrite common mode chokes fixes the RFI -- it kills the
> RF current on the cable, which prevents it from exciting the pin 1
> problem. In fact, if it were a SHIELDING problem, the choke would not
> help.
> _______________________________________________
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