[AMRadio] average power increase with 100% modulation (light bulb


John E. Coleman (ARS WA5BXO) wa5bxo2006 at pctechref.com
Wed Nov 15 10:44:53 EST 2006


I will have to disagree with that.  

A 40 watt carrier with 100% modulation (sine wave audio) will produce a
120Watt PEP output, but PEP is not average.  The average power that the
dummy load will see is a 50% increase.
40 watt carrier + 20 watts of sideband = 60 watts average RF power.

A similar thing is true for a thermal coupled RF amp meter.  It measures
Average RF amps not Peak Envelope Amps

John, WA5BXO


-----Original Message-----
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net] On Behalf Of HDale77067 at aol.com
Sent: Wednesday, November 15, 2006 9:23 AM
To: amradio at mailman.qth.net
Subject: Re: [AMRadio] Ranger Audio

With 100% modulation the power could go to over 120Watts. This will take out

a 60 watt bulb...

There is nothing more uncommon than common sense. Frank Lloyd Wright
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