Mileage varies.
I have a 50" Samsung LCD/LED display in the living room, which is the
exact farthest point in the house from my 160M full sloper. Even at
several hundred feet separation, QRO operation on 160 turns the blasted
thing on and off. This is with a stack of a dozen Mix 31 beads on both
the HDMI and power cables, and a -73dB broadband EMI/RFI filtered power
strip. My assumption is that there is something in the monitor that is
*very* sensitive to RF. Nothing else in the house is affected in the
slightest on any frequency, much less 160M.
Go figure.
Jim N7CXI
On 3/25/2013 10:54 AM, Rich - W3ZJ wrote:
My monitor cables all have rather hefty looking ferrite beads molded
into the cables and I have no RF problems. That's the way they were
delivered from Dell.
My son in law recently went to Best Buy to get a monitor for a new PC he
was building and found that he could buy an HDTV (TV tuner and all) and
interface it with an HDMI cable cheaper then he could get a similar
sized computer monitor. So, that's what he did. I don't have any RFI
experience with that set up except to say that I have no problem with my
own HDTV's.
73, Rich - W3ZJ
Jim Gilliam wrote:
Rf might be entering through the power and video cables. It could be
that due to your RF issues that many monitors might suffer this
interference problem. I would look into winding the cables around some
torroids to see if this can prevent the RF from entering the monitor
circuitry. Also, you might investigate putting a choke BALUN on the
output of your transmitter, and a choke BALUN at the antenna feed
point if your are using coax. This addition might keep RF off the feed
line that could be radiating into your video cables. Jim, K6QE
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