On 29 Sep 2006 16:24:06 -0700, "Telstar Electronics"
wrote:

wrote:
This in reality means that a 100% single tone modulated AM signal
can reach PEP values of around 165 watts. So that his amp should be
rated around 40 watts carrier on AM and around 160 watts PEP on
sideband.

In properly-adjusted AM, average power at 100% modulation = 1.5 X
resting carrier power, and PEP = 4 X resting carrier power

This was taken from http://www.ab4oj.com/peptest.html

which also agrees with
http://www.rf-amplifiers.com/index.php?topic=peak_power

Nice try...

www.telstar-electronics.com

You are doing the math backwards.

You must take the maximum power the amp can deliver before saturation.
That will be your approximate PEP rating. Then divide that figure by
four to get the approximate carrier level for AM.

You are determining the max output and then just assuming that you
can multiply that by four to get the PEP rating. (129 x 4 = 516) It
doesn't work that way.