Effective radiated power Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.Anti-spam check. Do not fill this in! == Relation to transmitter output power == The transmitter is usually connected to the antenna through a [[transmission line]] and [[impedance matching|impedance matching network]]. Since these components may have significant losses <math>L</math>, the power applied to the antenna is usually less than the output power of the transmitter <math>P_\text{TX}</math>. The relation of ERP and EIRP to [[transmitter power output|transmitter output power]] is <math display="block">\mathrm{EIRP(dBW)} = P_\text{TX}\mathrm{(dBW)} - L\mathrm{(dB)} + G\text{(dBi)}</math> <math display="block">\mathrm{ERP(dBW)} = P_\text{TX}\mathrm{(dBW)} - L\mathrm{(dB)} + G\text{(dBi)} - 2.15</math> Losses in the antenna itself are included in the gain. Summary: Please note that all contributions to Christianpedia may be edited, altered, or removed by other contributors. If you do not want your writing to be edited mercilessly, then do not submit it here. You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource (see Christianpedia:Copyrights for details). Do not submit copyrighted work without permission! Cancel Editing help (opens in new window) Discuss this page