[time-nuts] Spread Spectrum Spam!

[Alan Melia]

Oh yes you are not alone :-)) I have posted two or three times to EDN on
this topic.
Alan G3NYK

----- Original Message -----
From: "David Forbes" <dforbes at dakotacom.net>
To: "Discussion of precise time and frequency measurement"
<time-nuts at febo.com>
Sent: Thursday, November 26, 2009 5:03 PM
Subject: Re: [time-nuts] Spread Spectrum Spam!


> >
> >Hmph!...   Spread Spectrum clocks do *NOT* make the shielding any
> >easier, it's just a fudge for the accountants who won't fund a proper
> >job in the first place.   It only "fools" the QP detector in a measuring
> >receiver into showing a lower value, it does not "Fix" the problem.
>
> And I thought I was the only person in the world who noticed that bit
> of subterfuge. It actually makes EMI *worse*, artificially raising
> the test limit by smearing the signal to get past the FCC's spectrum
> analyzer-defined peak limit.
>
> The Part 15 limits for such things as the FM broadcast band, on the
> other hand, are defined by field strength. That's the only
> cheat-proof way to specify emitter power testing.
>
> --
>
> --David Forbes, Tucson, AZ
> http://www.cathodecorner.com/
>
>
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