[Soekris] Incidental RF emissions spectra?

[Bob Camp]

Hi

I think you will find that it varies a *lot* with the configuration  
of any cables coming out of the box. You will always have the  
ethernet clocks as peaks, pretty much no matter what you do. You will  
also have peaks at 33 1/3 MHz and it's multiples.

A proper run with the "correct" antennas is major undertaking.

Bob

On Aug 3, 2007, at 8:53 AM, Drake Wilson wrote:

> On Fri, Aug 03, 2007 at 01:37:47PM +0200, Soren Kristensen wrote:
>> Drake Wilson wrote:
>>> I don't
>>> see these data anywhere on the website; are they published or  
>>> requestable
>>> somewhere (and I just didn't find them), or extant but unpublished,
>>> or just unavailable?
>>
>> Not available, the actual test reports only have a list with the  
>> peaks....
>
> (Cc'ing to the list for archival and discussion, since the original
> singular reply may have been a mistake; I expect it's not
> confidential, anyway.)
>
> Hmm.  Okay; are those published, then?  The next best thing after a
> spectrogram would be an overview of peaks and average contour, but
> just peaks would still be useful.  Even just the top peak would yield
> some information.  I'm also interested in how much it varies between
> the different devices, though the net4501 and net4801 are the primary
> targets.
>
> On Fri, Aug 03, 2007 at 11:52:42AM +0000, Poul-Henning Kamp wrote:
>> If there are any particular frequencies you're worried about, I  
>> can do
>> a sanity check up to about 1.5 GHz with my HP8568B
>
> It's mostly the common "consumer electronics" bands: broadcast
> television and radio, mobile phones, unlicensed wireless---that
> sort of thing.  Some of that is above 1.5 GHz, though.
>
>    ---> Drake Wilson
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