[AMPS] Peak reading vs True peak

Peter Chadwick Peter_Chadwick@mitel.com
Wed, 23 Jun 1999 15:36:05 +0100


Jim says:

	>and modulating with a SSB note,the peak level is not much higher

	If you have a single tone on SSB, the peak is equal to the average.
	If you have two equal, sinusoidal, non-harmonically related tones,
then the PEP is four times the rms. The 'average' power indicated is
dependent on the type of RF to DC conversion used: there's often a factor of
pi/2 comes in.

	> Is there a difference between peak power and True peak power? 

	damned if I know! Bit reminiscent of 'music power' ratings! I
suspect it's back to the way in which a 'peak' reading voltmeter decide on
the peak.

	73

	Peter G3RZP


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