[AMRadio] Re: MODULATION POWER REQUIRED


Gary Schafer garyschafer at comcast.net
Sat Feb 16 16:36:55 EST 2008




> The waveform of the rf signal is not the same thing as the waveform of the
> envelope pattern of a modulated waveform.  

We could term this "modulation power of the transmitter" to distinguish it
from PEP.

>When we talk about the average
> power output, or mean power output of a transmitter, we are talking about
> the average that is integrated over several cycles of the waveform of the
> audio that modulates the carrier.  With PEP, you are selecting the one
> highest peak, which may occur infrequently, or possibly only once during
> the
> entire transmission, and basing your power output  reading on the average
> rf
> power during that peak.  This has very little to do with the apparent
> loudness of the signal, or the amount of interference it may generate.

73
Gary  K4FMX



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