[ARC5] AM modulating an "ARC-5" transmitter...

[D C _Mac_ Macdonald]

Just for a refresher, am I not correct in stating that FCC rules state a maximum of 1500 Watts Peak Envelope Power (PEP) OUTPUT? 
 
For extreme case of 75% efficiency in a Class C, high-level, 100% modulated AM signal, a 500 W carrier input final would give peaks 4 times the carrier output of 375 Watts (1500 Watts) meaning a "half gallon" transmitter would pass muster. 
 
If you assume 70% efficiency, then a carrier input of 535.71 Watts would be "kosher." 
 
Any carrier input less than the above would certainly not get you cited by FCC if they actually did an inspection. 
 
Lots of "straining at gnats" going on here! 
 
* * * * * * * * * * * 
* 73 - Mac, K2GKK/5 * 
* (Since 30 Nov 53) * 
* k2gkk hotmail com * 
* Oklahoma City, OK * 
* USAF & FAA (Ret.) * 
* * * * * * * * * * * 
 

 
 
> Date: Sun, 11 Oct 2015 11:44:58 +1300
> From: neilb0627 at gmail.com
> To: arc5 at mailman.qth.net
> Subject: Re: [ARC5] AM modulating an "ARC-5" transmitter...
> 
> Surely the peak power is the absolute limit for 100% modulation.
> It doesn't matter whether the modulating waveform is a sine wave,
> speech, square wave, or anything else. Cross that 100% line and
> you're overmodulating and into the realm of distortion.
> 
> It's average power, not peak power, that is determined by the
> modulating waveform.
> 
> 73 de Neil ZL1ANM