[Elecraft] P3 SVGA external monitor freezes - RFI?

[mike]

Thanks for your input Jim. I attended your talk at Pacifcon and have been
implementing some bonding improvements including tying all the earth ground
rods, tower etc. with #4 wire as well as better equipment grounding in the
station.

The beads on the power cable (only 110v AC no DC) appear to have improved
the situation, but I understand it would be better to use multiple turns
though a ferrite core on the VGA cable. Without clipping and re-wiring the
end connector I have not acquired a big enough ferrite core to do the job.

The BenQ does not appear to generate any trash at least to the level I
notice it in my operations. At Pacificon, you did suggest a way to connect
the monitor's DB-15 connector to the station ground through the small screws
that hold the cable connector in place. I might try that.

Tnx es 73  ..mike  AI6II


/Probably yes. Perhaps a bad cable between the monitor and the P3.

Beads on cables do not solve problems with HF RFI. Multiple turns 
through a bead or core are needed. Study k9yc.com/FRI-Ham.pdf

A neighbor ham gave me a Samsung monitor that has very bad RFI 
susceptibility, and it also generates RF trash. It runs on 12V, but 
running from a 12V battery does not help, and I've not been able to 
solve it with chokes. RF coupling is via internal wiring and poor 
shielding.

73, Jim K9YC
/




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