I had great success in cleaning up my internally generated RFI... See:
http://nk7z.net/rfi-now-house-cleaning/
for how, and some Spectrum Analyzer, (Elecraft P3), shots of the results.
73s and thanks,
Dave
NK7Z
http://www.nk7z.net
On 01/09/2018 04:01 AM, Roger (K8RI) wrote:
It's always nice to neaten things up, but EVERY TIME I have neatened up
that mass of cables I have ended up with problems with the station in
Breckenridge. http://www.rogerhalstead.com/ham_files/boat1.htm ,
Jim's tutorial would have been a great help back then. Of course the
ferite cores weren't available.
Such has not been the case here in Midland.
http://www.rogerhalstead.com/ham_files/boat8.htm
Here's a partial list
http://www.rogerhalstead.com/ham_files/boatanch.htm ; Regrettably, I have
no photos of my earlier stations.
I just let the excess hang. Often, I just pull enough out of the
original bundle to reach. I've not had to resort to chokes in any
leads, except the common mode chokes in feedlines.
If it aint broke, don't fix it! "IF NEEDED" those chokes work great.
73, Roger (K8RI)
On 1/8/2018 Monday 11:46 PM, Dave Cole (NK7Z) wrote:
I try and coil my excess power cords, etc on ferrite cores... Maybe 6
to 8 turns, on each core.
73s and thanks,
Dave
NK7Z
http://www.nk7z.net
On 01/08/2018 08:06 PM, Jim Brown wrote:
Hi Greg,
Before you do ANYTHING:
1) Buy and study the new ARRL Book on Grounding and Bonding;
or:
2) Download and study the slides for my tutorial talk on that topic
http://k9yc.com/GroundingAndAudio.pdf
AND
3) Download and study my tutorial on finding and killing receive noise
http://k9yc.com/KillingReceiveNoise.pdf ; (Written tutorial)
http://k9yc.com/KillingRXNoiseVisalia.pdf (Slides for talk at Visalia)
Do NOT cut power cables short -- if the gear is noisy, you may need
to use the extra length to wind ferrite chokes. Bonding cables SHOULD
be short.
73, Jim K9YC
On 1/8/2018 6:33 PM, Greg Newberry wrote:
Hello all,
I've been following the forum for a while and learning a great deal
about RF, RFI, etc. So I'm in the process of cleaning up my ham
shack. Putting in a SPG (single point ground) and in general, being
pro-active about RFI.
One thing I'm not sure of; what should I do with the excess length
of power cords. i.e. A 6ft cord on my computer, but it's only two
feet to the outlet. Extra length on wall warts, audio cables etc. ?
Coil them up, bunch them up? I don't really want to cut them all
down to length, as I do move things around.
Thanks in advance,
Greg
WB7DUO
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