Question
What is the maximum power limit on the 60-meter band?
Answer Options
- A) 1500 watts PEP
- B) 10 watts RMS
- C) ERP of 100 watts PEP with respect to a dipole
- D) ERP of 100 watts PEP with respect to an isotropic antenna
Correct Answer: C
Explanation
The power limit on the 60\text{-meter} band is unique because it is specified as an Effective Radiated Power (ERP), which is the product of the transmitter power and the antenna gain relative to a half-wave dipole. FCC Rule \S 97.313(\text{i}) sets this limit at an ERP of 100 watts PEP with respect to a half-wave dipole.
This distinction is crucial because it accounts for the antenna’s gain or loss. If an antenna has gain, the transmitter output power must be reduced to keep the ERP below 100 watts. This regulation is a mandatory restriction due to the shared, secondary allocation of the 60\text{m} band, ensuring primary users are protected.
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