product of the effective output power of the transmitter multiplied by the antenna gain Note 1 to entry: The gain is produced by an antenna concentrating radiation in a particular direction and is always related to a specified reference antenna Note 2 to entry: The threshold power is considered to be equal to the effective isotropic radiated power (EIRP), as per ITU-R BS.561-2, Definitions of radiation in LF, MF and HF broadcasting bands.
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