The antenna separations (in meters) required for optimum operation of a space diversity system can be calculated from:where R = effective earth radius (m) and L = path length (m)

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Microwave Communication

The antenna separations (in meters) required for optimum operation of a space diversity system can be calculated from:where R = effective earth radius (m) and L = path length (m)

S = 3λR/L

S = 2λR/L

S = λR/L

S = λR/RL

S = 3λR/L

S = 2λR/L

S = λR/L

S = λR/RL

__________ is the progressive decrease of signal strength with increasing distance.

Radiation

Attenuation

Modulation

Propagation

Radiation

Attenuation

Modulation

Propagation

Microwave Communication

Microwave frequencies are normally regarded as those in the range of

1000 to 10,000 GHz

1 to 100 GHz

10 to 1000 GHz

1 to 500 MHz

1000 to 10,000 GHz

1 to 100 GHz

10 to 1000 GHz

1 to 500 MHz

Microwave Communication

A Class-S Emergency Position-Indicating Radio Beacon (E.P.I.R.B)

Must be capable of floating or being secured to a survival

All of these

Must have its battery replaced after emergency use

May be tested during the first five minutes of any hour

Must be capable of floating or being secured to a survival

All of these

Must have its battery replaced after emergency use

May be tested during the first five minutes of any hour

Microwave Communication

Theoretically electromagnetic radiation field strength varies in inverse proportion to the square of the distance, but when atmospheric attenuation effects and the absorption of the terrain are taken into account the attenuation can be as high as the inverse ___________ power of the distance.

Fifth

Fourth

Third

Sixth

Fifth

Fourth

Third

Sixth

Microwave Communication

In a pulsed radar set, the STC circuit is used to

Reduce interference from the effects of sea return

Improve the target bearing resolution

Increases receiver sensitivity for echoes from targets

Vary the pulse frequency in order to control the maximum target

Reduce interference from the effects of sea return

Improve the target bearing resolution

Increases receiver sensitivity for echoes from targets

Vary the pulse frequency in order to control the maximum target

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The antenna separations (in meters) required for optimum operation of a space diversity system can be calculated from:where R = effective earth radius (m) and L = path length (m)

__________ is the progressive decrease of signal strength with increasing distance.

Microwave frequencies are normally regarded as those in the range of

A Class-S Emergency Position-Indicating Radio Beacon (E.P.I.R.B)

Theoretically electromagnetic radiation field strength varies in inverse proportion to the square of the distance, but when atmospheric attenuation effects and the absorption of the terrain are taken into account the attenuation can be as high as the inverse ___________ power of the distance.

In a pulsed radar set, the STC circuit is used to

Google

Android

Apple

Facebook

Telegram

Instagram