| Definition: | the ratio, usually expressed in decibels, for a radio link, of the power radiated by the transmitting antenna to the power that would be available at the receiving antenna output if there were no loss in the radio-frequency circuits of the antennas, it being assumed that the antenna radiation characteristics are retained
NOTE – Transmission loss is equal to system loss minus the loss in the radio-frequency circuits which are integral parts of the antennas.
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