[AMRadio] Valiant carrier...

[Gary Schafer]

> -----Original Message-----
> From: amradio-bounces at mailman.qth.net [mailto:amradio-
> bounces at mailman.qth.net] On Behalf Of Jim Tonne
> Sent: Wednesday, June 15, 2011 4:07 PM
> To: Discussion of AM Radio in the Amateur Service
> Subject: Re: [AMRadio] Valiant carrier...
> 
> 
> John:
> 
> > one should expect about three
> > times the pep from a properly tuned and modulated
> > Class C transmitter.
> 
> On modulation peaks the RF amplitude will double
> and so the power at that time is FOUR times that
> of the unmodulated carrier.
> 
> If that is not the case then you have what is called
> downward modulation; the positive peaks are being
> squashed.  Splatter is the common result.
> 
> We are both assuming sinusoidal modulation here.
> 
> - Jim W4ENE

Or, grid drive is low, tube emission is low, power supply voltage sags with
modulation or the final is loaded to heavy for the amount of audio
available.
All can be a factor in not reaching 4 times pep power.

73
Gary  K4FMX