and I can NEVER remember which mix is proper for which use.
but I can remember this url. LOL
go figure...old dead brain cells.
http://www.k0bg.com/beads.html
On 4/17/2010 5:10:18 PM, Gerald Youngblood (ger...@flex-radio.com) wrote:
Brian,
Thank you for your well stated description of something most hams
don't
understand. In fact, the ARRL has a *300 page* book, "The ARRL RFI Book"
on
the subject and there are several excellent articles in our Knowledge
Base.
Before I designed the SDR-1000, I bought a FT-847, which I still own. I
had
it connected to a copper rod above the desk through 1/2" copper braid,
which
I later learned is very inductive. Inductance on a ground is not a good
thing. I used 1" braid to go from the copper pipe through PVC conduit to
the outside where it connected to a "single point" ground system with 2"
copper strap to ground.
After running that setup for awhile at 100W, all of a sudden I could not
run
the radio above 50W without going to full RF feedback. If I stayed below
50W it was fine but above that, it would pin the meter. This went on for
some time because I was busy and did not have time to diagnose. Later for
who knows what reason, it just quit having the RFI problem.
Now I run a FLEX-5000 with a FireWire cable that is not as good as the one
we ship today. The radio is across the room from the wall conduit to the
outside
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