All Topics  
Transmitter power output

 

 
   Email Print
   Bookmark   Link
 

 

Transmitter power output
 
 
  Topics Transmitter power output Topic Home

In radio transmission, transmitter power output (TPO) is the actual amount of power
Power (physics)

In physics, power is the rate at which mechanical work is performed or energy is transmitted, or the amount of energy required or expended for a given unit of time....
 (in watt
WATT

WATT is a radio station broadcasting a News radio-Talk radio-Sports radio format. Licensed to Cadillac, Michigan, it first began broadcasting in 1945....
s) of radio frequency
Radio frequency

Radio frequency is a frequency or rate of oscillation within the range of about 3 Hz to 300 GHz. This range corresponds to frequency of alternating current electrical signals used to produce and detect radio waves....
 (RF) energy that a transmitter
Transmitter

For biologic transmitters, see transmitter substance.A transmitter is an Electronics machine which, usually with the aid of an antenna , propagates an electromagnetic radiation Signalling such as radio, television, or other telecommunications....
 produces at its output
Output

Output is the term denote either an exit or changes which exit a system and which activate/modify a process. It is an abstract concept, used in the model ing, system design and system exploitation....
.

This is not the amount of power that a radio station
Radio station

This article is about radio broadcasting, for other uses see Radio .Radio broadcasting is an audio broadcasting service, traditionally broadcast through the air as radio waves from a transmitter to an antenna and a thus to a receiving device....
 reports as its power, as in "we're 100,000 watts of rock 'n' roll", which is usually the effective radiated power
Effective radiated power

In radio telecommunications, effective radiated power or equivalent radiated power is a standardized theoretical measurement of Radio frequency energy using the non-International System of Units unit Decibel, and is determined by subtracting system losses and adding system gains....
 (ERP). The transmitter power output is normally less than the ERP.

The radio antenna's design "focuses" the signal toward the horizon
Horizon

The horizon is the apparent line that separates earth from sky.More precisely, it is the line that divides all of the directions one can possibly look into two categories: those which intersect the Earth's surface, and those which do not....
, creating gain
Gain

In electronics, gain is a measure of the ability of a electrical network to increase the Power or amplitude of a Signal . It is usually defined as the mean ratio of the Signalling of a system to the Signalling of the same system....
 and increasing the ERP.






Discussion
Ask a question about 'Transmitter power output'
Start a new discussion about 'Transmitter power output'
Answer questions from other users
Full Discussion Forum



Encyclopedia


In radio transmission, transmitter power output (TPO) is the actual amount of power
Power (physics)

In physics, power is the rate at which mechanical work is performed or energy is transmitted, or the amount of energy required or expended for a given unit of time....
 (in watt
WATT

WATT is a radio station broadcasting a News radio-Talk radio-Sports radio format. Licensed to Cadillac, Michigan, it first began broadcasting in 1945....
s) of radio frequency
Radio frequency

Radio frequency is a frequency or rate of oscillation within the range of about 3 Hz to 300 GHz. This range corresponds to frequency of alternating current electrical signals used to produce and detect radio waves....
 (RF) energy that a transmitter
Transmitter

For biologic transmitters, see transmitter substance.A transmitter is an Electronics machine which, usually with the aid of an antenna , propagates an electromagnetic radiation Signalling such as radio, television, or other telecommunications....
 produces at its output
Output

Output is the term denote either an exit or changes which exit a system and which activate/modify a process. It is an abstract concept, used in the model ing, system design and system exploitation....
.

This is not the amount of power that a radio station
Radio station

This article is about radio broadcasting, for other uses see Radio .Radio broadcasting is an audio broadcasting service, traditionally broadcast through the air as radio waves from a transmitter to an antenna and a thus to a receiving device....
 reports as its power, as in "we're 100,000 watts of rock 'n' roll", which is usually the effective radiated power
Effective radiated power

In radio telecommunications, effective radiated power or equivalent radiated power is a standardized theoretical measurement of Radio frequency energy using the non-International System of Units unit Decibel, and is determined by subtracting system losses and adding system gains....
 (ERP). The transmitter power output is normally less than the ERP.

The radio antenna's design "focuses" the signal toward the horizon
Horizon

The horizon is the apparent line that separates earth from sky.More precisely, it is the line that divides all of the directions one can possibly look into two categories: those which intersect the Earth's surface, and those which do not....
, creating gain
Gain

In electronics, gain is a measure of the ability of a electrical network to increase the Power or amplitude of a Signal . It is usually defined as the mean ratio of the Signalling of a system to the Signalling of the same system....
 and increasing the ERP. There is also some loss (negative gain) from the feedline, which reduces some of the TPO to the antenna by both resistance and by radiating
Radiant energy

Radiant energy is the energy of electromagnetic waves. The quantity of radiant energy may be calculated by Integral radiant flux with respect to time and, like all forms of energy, its SI unit is the joule....
 a small part of the signal.

The basic equation
Equation

An equation is a mathematics Proposition, in table of mathematical symbols, that two things are exactly the same . Equations are written with an equal sign, as in...
 relating transmitter to effective power is:



See also

  • Effective radiated power
    Effective radiated power

    In radio telecommunications, effective radiated power or equivalent radiated power is a standardized theoretical measurement of Radio frequency energy using the non-International System of Units unit Decibel, and is determined by subtracting system losses and adding system gains....
  • Nominal power
    Nominal power

    Nominal power is a measurement of a mediumwave radio station's output used in the United States. AM Broadcastingers are licensed by the Federal Communications Commission to operate at a specific Real versus nominal value power , which may be different from the transmitter power output....
  • RF power margin
    RF power margin

    In telecommunication, the term RF power margin has the following meanings:1. The amount of transmitter Power above that which is computed by the Data link designer as the minimum required to meet specified link performance....