What is the definition of duty cycle during the averaging time for RF exposure?

In the context of RF exposure regulations, the duty cycle is simply the percentage of time that a transmitter is actively transmitting (on the air) during a specified averaging window. It measures the ratio of the 'on' time to the total time. For example, if you transmit for 3 minutes and listen for 3 minutes, your duty cycle is 50 percent. This is crucial for calculating RF exposure because resting (listening) periods allow biological tissues to dissipate heat. The distractors mentioning differences between PEP and average power are confusing duty cycle with crest factor or amplitude variations. Duty cycle is strictly a measure of time, not power magnitude.