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VE2HAR > MT63 13.03.05 18:34l 50 Lines 1386 Bytes #-7304 (0) @ WW
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Subj: Re: [MT63] Re: Crest Factors
Path: DB0FHN<DB0RGB<OK0PPL<DB0RES<ON0AR<VA2HAR<VE2HAR
Sent: 050313/1717z @:VE2HAR.#MTL.QC.CAN.NOAM Laval #:42188 $:50472sentto
On Sun, 2005-03-13 at 17:35, Mark Miller wrote:
> Envelope crest factor
> To determine the envelope crest factor, first determine the power of a
> sinusoidal signal that has the same peak voltage as the modulated signal's
> peak voltage. This value is then divided by the average power of the
> modulated signal. The result is defined as the translated signal's envelope
> crest factor.
So envelope crest factor is peak crest factor minus 3 dB, right?
Anyway, a while back I did some calculations with the numerical
sample data right out of the MT63 modem. The (peak) crest factor
number I got was around 13 dB, slightly dependent on the data.
--
Tomi Manninen / OH2BNS / KP20JF74
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