Thanks Dave,
I suspect the list flushes word documents, as they can be used to vector
virus attacks. I manage a few lists, and all of them are set to flush
virus vectors. I do allow pdf files. I am not sure if the list allows
pdfs...
In any case, THANK YOU!
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources
On 11/23/19 4:20 PM, David Eckhardt wrote:
I put them in a Word document. Don't know why they weren't attached.
Here you are - see attachment.
Dave - WØLEV
On Sat, Nov 23, 2019 at 11:56 PM Dave Cole <dave@nk7z.net
<mailto:dave@nk7z.net>> wrote:
Dave,
The slides were not attached, can you send them directly to me
please, I
would like to see your presentation.
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources
On 11/23/19 3:27 PM, David Eckhardt wrote:
> Quate:
> "cable shields are improperly terminated to the
circuit board
> rather than to the shielding enclosure."
>
> This is the NUMBER ONE error the latest crop of designers make.
The best
> way to violate the Faraday Cage they believe they have (had). In
so doing,
> THEY'VE VIOLATED MR. FARADAY ! ! !
>
> If the neighbor is causing interference, it is radiated from the
neighbor's
> house wiring into the ham's antenna. This is especially true if the
> source is blocks away. However, within the house, yes, the
problem is
> conducted 'emissions'. Attached are thre slides I did for a
course I once
> offered. Have a look at the enclosure.
>
> Dave - WØLEV
>
> On Sat, Nov 23, 2019 at 7:13 PM Jim Brown
<jim@audiosystemsgroup.com <mailto:jim@audiosystemsgroup.com>> wrote:
>
>> On 11/23/2019 9:18 AM, David Eckhardt wrote:
>>> Radiated emissions (typically what causes hams interference) is
regulated
>>> and levels specified only at and above 30 MHz. Below 30 MHz,
150 kHz
>>> through 29.99999.... MHz, conducted energy is specified and
measured.
>>
>> This is NOT correct. CONDUCTED emissions are the primary cause
of RFI at
>> all frequencies, but especially below 30 MHz, through a
mechanism first
>> identified in the world of pro audio as "The Pin One Problem,"
whereby
>> cable shields are improperly terminated to the circuit board
rather than
>> to the shielding enclosure. The same error is also quite common
with the
>> Green Wire for power wiring.
>>
>> Detail on this at k9yc.com/publish.htm <http://k9yc.com/publish.htm>
>>
>> 73, Jim K9YC
>> _______________________________________________
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>> RFI@contesting.com <mailto:RFI@contesting.com>
>> http://lists.contesting.com/mailman/listinfo/rfi
>>
>
>
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*Dave - WØLEV
*
*/Just Let Darwin Work/*
*/Just Think/*
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