[RFI] Re-wiring station

[Dave Cole]

Hi,

I set up the grounding first, then power, then signal, then all the 
extra stuff in wiring my station...

As I set up each extra device, I would do a check for RFI.  I also kept 
all types of wiring separate, (power, signal, control, etc), and never 
ran power parallel with signal in the same run, or if run at a different 
location, a ground was between them.

I use a UPS to power all radio gear, and pretty much everything that 
comes in contact with the radio, via a single distribution point.  That 
is clean power.

I also have dirty power, which comes from the same outlet, but not via 
the UPS, for anything I feel I can put there.  Things like the 2 meter 
rig, the cable modem, a few external drives, etc...  Things that don't 
get too close to the radio electrically.

I don't run the power for them in the same bundle either.  There are two 
levels in the back of the desk for power distribution, one is clean, and 
one is dirty power.  I also have a slug of ferrite material back there 
on every single power and signal line.  All RF cables between equipment 
are left naked as far as ferrite's are concerned.

I think the single best thing I did to remove RFI was to get rid of all 
the 12 volt wall bugs...

I use 12V from a clean, high current, power supply, and a West Mountain 
Power pole distribution device.  I put ferrite's on everything going 
into and out of the West Mountain box.  West Mountain builds RFI 
suppression into the device as well.  The day I did that, is the day 
most of my locally generated RFI ended.

If I had to pick a single action for locally generated RFI, it would be 
to replace every single wall wart with a single clean 12 V supply, 
adding ferrite material to everything connected to it.

73s and thanks,
Dave
NK7Z
http://www.nk7z.net

On 01/02/2017 10:16 PM, Roger (K8RI) wrote:
> The last time I rewired my shack it took weeks to get rid of the cross
> talk.
> It looked great, but was a disaster in operation. I said, never again.
> Now I just let the wires fall where they may and then check it out for
> operation.  Looks like a rat's nest, but it works although I seem to
> have picked up some hash from multiple sources.  My backup and line
> conditioner is no longer generating a sin wave.  The other source is noy
> in our house and I've not been up to searching the neighborhood.
>
> 73, Roger (K8RI)
>
> On 1/1/2017 11:41 AM, Dave Cole wrote:
>> It would be nice if I could type correctly...
>>
>> "chronicled" not "cronicled"...
>>
>> 73s and thanks,
>> Dave
>> NK7Z
>> http://www.nk7z.net
>>
>> On 01/01/2017 08:39 AM, Dave Cole wrote:
>>> I did a full rewire of my station a year or so ago...  It is cronicled
>>> here:
>>>
>>> http://nk7z.net/rebuilding-the-shack/
>>>
>>>
>>> Also, Happy New Year to all!!!
>>>
>>> 73s and thanks,
>>> Dave
>>> NK7Z
>>> http://www.nk7z.net
>>>
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