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peak envelope power
Peak envelope power (PEP) is the highest envelope power supplied to the antenna transmission line by a transmitter during any full undistorted RF cycle or series of complete radio frequency cycles. PEP is normally considered the occasional or continuously repeating crest of the modulation envelope under normal operating conditions. The United States Federal Communications Commission uses PEP to set maximum power standards for amateur radio transmitters.〔R. Dean Straw, ed. ''ARRL Handbook For Radio Amateurs''. Newington, Connecticut: American Radio Relay League, 1999, p. 6.7〕
==AM PEP==
Assuming linear, perfectly symmetrical, 100% modulation of a carrier, PEP output of an AM transmitter is four times its carrier PEP; in other words, a typical modern 100-watt amateur transceiver is usually rated for no more than, and often less than, 25 watts carrier output when operating in AM.〔R. Dean Straw, ed. ''ARRL Handbook For Radio Amateurs''. Newington, Connecticut: American Radio Relay League, 1999, p. 15.6〕
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