HF Amplifier Power Measurements:
Power is often defined as peak power, carrier power, average power, Peak
Envelope Power (PEP) and sometimes incorrectly as RMS power. In the United States
the Federal Communications Commission uses PEP to set maximum power limits for
amateur radio transmitters. The maximum power allowed on certain frequencies using
SSB modulation is 1,500 Watts PEP. PEP is the average power supplied by the
transmitter/linear RF amplifier to the transmission line and eventually the antenna, during
one radio frequency cycle at the crest of the modulation envelope, under normal
operating conditions.